Table Of ContentNEW SPECIES OF PTERIIDAE, PINNIDAE, VENERIDAE. EUCIROIDAE AND
CORBULIDAEFROMAUSTRALIA(MOLLUSCA: BIVALVIA; VENEROIDA).
KEVIN LAMPRELLANDJOHN M HEALY
L.
Lamprell, K.L. & HeaJy,J.M 199706 30: New species ofPtcriidae, Pinnidae, Veneridae.
EuciroidaeandCorbulidaefromAustralia(Mollusca: Bivalvia: Veneroida). Memoirsoflke
QueenslandMuseum 42(1); 271-281. Brisbane. ISSN 0079-8835.
SevennewspeciesofbivalvesfromAustraliaarefiguredanddescribed; Pterinhowensissp,
nov and P. cooki sp. nov. (Pteriidaej; Atrina (Servatrina)paimensis sp. nov. (Pinnidae);
Dosiniacarpentariana sp. nov. (Veneridae); Euctroaqueenslandica sp. nov. (Euciroidaei.
Cotbida (Serracorbula) moretonensis sp.nov and C. (Amsocnrhula) xtephensoni sp. nov.
(Corbulidae). AJ!speciesarefromQueenslandexceptPteriahowensis,wmchisknownonlv
irnrn Lord Howe Island. Mollusca, Bivalvia, Veneroida, Australia.
KevinL Lamprell,MalacologySecuon, QueenslandMuseum, POBox3300SouthBrisbane,
Queensland,410J,Australia;JonhM. Heatv, DepartmentofZoology. IiniversityofQueens-
land, Queensland, 4072.Australia; I May '1997.
During the preparationofthesecond volumeof Abbreviations used: AMSC = Australian Mu-
'Bivalves of Australia' (Lamprell & Healy, in seum, Sydney; KL = Lamprell Collection;
QMMO WAM
prep.) a number of apparently unnamed species =QueenslandMuseum.Brisbane;
were uncovered in the collections ofthe Austra- = Western Australian Museum. Penh; Iv - IHi
lianMuseum(Sydney),theQueenslandMuseum valve; rv = right valve; pv = paired or conjoined
(Brisbane) and that of one of the authors valves. NSW=NewSouthWales; NT=Northern
LamprellCollection).Thesespeciesincluderep- Territory; Qld = Queensland.
I
resentatives of the following genera/subgenera
and families: Pteria (Pteriidae), Atrina SYSTEMATICS
^atrina) (Pinnidae), Dosinia (Veneridae),
Eucirou(Euciroidae and Corbula{Anisocorbula Thesystematicarrangement usedforeach fam-
and Notocorbula (Co>rbulidae). After searching ily herein followsthatdfvariousauthors (Cox &
the relevant literature, especially that pertaining Hertiein, 1969; Hertlein k Cox, 1969; Keen,
tLoamthye.Au1s9t4r1a;liHaynndre,gi1o9n54(;inTcalukdeimnugrIare&dalOck,u1l9a3m9.; tto9l6o9gAy,bw)itiiintthheeeTxrceeapttiisoenoonftIhneveErutceibrroaitdeaePawlheiocnh-
1995687;; RHoesaewJayte&r, L1a9m6p1r:eFlils.che1r9-9Pi2e;ttLca&mpDreellmlas&, PfionlnliodwasePwohuitciherfsol&lowBseRronsaerwdat(e1r99(51)961a)n.d the
Whitehead, 1992; Lamprell & Stanisic. 1996:
Poutiers & Bernard, 1995)andaftercomparisons Family PTERHDAlL.r..v iH47
with type specimens held in the Natural History
Museum, London, the Museum national Pteria Scopoli, 777
1
iTHistoireNaturelle, ParisandThe Department of
Malacology, Zoological Museum ofthe Univer- TYPESPECIES.MuilushmtndoLiniMicu*, 17.^8.St>-
sity of Amsterdam, we were satisfied thai our Kennard, Salisbury & Woodward, 1931.
species should be describedas new.
Pteria howensis sp. nov.
MATERIAL AND METHODS (Fig. 1A-H)
ETYMOLOGY. ForLord Howe Island.
Allmeasurementsweremadeusingvernierdial
.ahpers. Shell height given is from the umbones DESCRIPTION. Shell length to 40.0mm; mod-
to the ventral margin on the left valve vertical to erately solid, obliquely ovate, dorsal margin
the hinge line. Shell length given is the greatest straight, umbones extend above the dorsal mar-
distance from anterior to posterior margin. Shell gin; both valves convex, left much more so and
depth given is the greatest distance between the encompassing the right; a well-defined, rounded
surfaces of the left and right valves. Shell size fold extends from the umbones to the postero-
given is forthe largest specimen examined by the veniral margin. Anterior wing short, moderately
authors unless otherwise stated. deep from the hinge line to the narrow byssal
272 MEMOIRS OFTHEQUEENSLAND MUSEUM
FIG. 1. Pteriahowensissp. nov. A-B, holotype; C-H, paratypes. A, external view oflv; B, external view ofrv;
C,internal viewoflv; D,externalviewoflv;E,internal viewrv;F,external viewofrv;G,external viewoflv;
H,external view oflv.
NEW MARINEBIVALVES 273
notch;posterior wing narrow, varying from short obsolete foldseparating it from the main body of
10 very long; anterior margin convex, posterior the shell. Sculpture of concentric microscopic
margin concave. Sculpture ofconcentric growth striae; jxTiosiracum of Widely spaced, narrow
Striae; periostracumofwidelyspaced,imbricated radialprocessesarrangedinconcentricrows,par-
concentric lamellae. Colour externally light allel tu the shell lip Colour externally off-white
bronze with irregular, darker brown zigzag con- m pearl-white with a Strong radial brown ray
centric patternsandconcentric linesandan irreg extendiQgfromtheumbooestotheposteroverttral
ilur black stripe on the umbonal fold; internally margin,strongeronthelv. weakerand sometimes
silvery nacreous, medially with a narrow pale Obsoleteon the right, with a narrow brown
brown margin. extending the lull length of the dorsal margin;
internally nacrctnts medially with a wide Hans-
MATERIAL EXAMINED. HOLOTYPE: AMSC
luscent while margin.
70584, Ipv, off Ball's Pyramid, Lord Howe L 55m,
Melmyre, 22.11.1960. Length 40.0mm, height MATtiRIAL EXAMINED HOLOTk f!
IS 5mm, depth of conjoined valves 6.5mm QMM059356, Ipv. Shelburnc Bav, north Qld,
PARATYPES: AMSC203159, 5pv, !lv. same data as I l"'27'S. 142''iS*E. Ifro.S.Cook, May 1992. U
holotype. Length of largest paratype 27.Smm, height 542mm. hcijtht 20.0mm. depth of conjoined
I4.fimm.depthofconjoined valves 7.8mm. S.r-mm.PAkATYPES; AMSC203I.V? 3pv,
WAM46.97. ]pv, same data as hololypc;
HABITAT AND DISTRIBUTION. Attached to AMSC32U793, Ipv. II '13.2'$, 143*25.!
Soft corals in shallow water; known only from Shelburnc Bay. north Qld, 22m, S. Cook. Apr
Lord Howe Island Dimension!, ot paratypes AMSC203I57, JeItiglh
52.5mm. height 23.5mm, depth of pv 9.50101!
WAM
RliMARKS. Pieria howensis sp. nov. is similar 46.97. length51.3mm, height24.5mm.depth0)
to P. peasei (Dunkcr, 1872), P, stbogite Pr&shad, pv 10,(>mm. OTHERMATERIAL: KL,3pv,sar,
1932. P ioveni (Dunker. 1872) and P. cxpseilus aatsthaochleodttyopsee;aQaMnMe0m5o9n3e5,7B,urIepav.uAorfaFriusrhaerSieeas.,sKt.n5CiolL-
(Dunkcsri,/e1oKf72t)heisneosuptelciinee,sbuAtdddiotcisonnaolrlyatntaoinnedioef gnn, 1989; QMM059358, I Ipv, ArafuraSea, SlO
. i attached toseaanemone, Bureau of Fisheries, K.Col-
the latter species have the consistent bronze col- gnn. Nov 1989; QMM059359, Ipv, Arafura S/« sin
our evident in P. Iwnrnsis. P. penguin (RSding, 541, attached to seaanemone, Bureau ofFishi-i
1798)mdPfuIciiiu (Lamarck, IS 19), whilesim- Colgan. Nov 1989; QMMO59360, 2pV, Arafura Sea,
ilar in shape, ure much hcavicr-shellcd Spc stn505,attachedtoseaanemone, Bureauol Fr-tlCflcs,
than P. howettsis and also attain a much larger K. Colgan. Nov 1989; QMM05936L Ipv, Arafnni
ssipzee.ciRmenhsowoefnPs.ipsenisgusiinmialnadr Pinfaslhcaaptae,tboujtudviefnfielres SFiesnh.ersitens.4K0.3.Coaltgtaanc.heNdoCvO 1s9e8a9;anQeMmMo0ne5.93B6u2re,auipov.f
cinolocoulroutro,adBuoltthhootdh.esPe. ISwpwercniessisrientabionth(hjeuvesnaimlee oAfraFfiusrhearSieesa,,Kst.nC5o3l1g,aant,taNcohved1t9o8s9e.aanemone,Bureau
and adult has a consistent light bronze back- HABITAT AND DISTRIBUTION. Attached to
ground shell colour, (black in P penguin arid seaanemonesandsoftcoral*to22m;Pterk*
hone-green in P. fnlivm) with brown U appears restricted to north Qld and the Nortihern
zigzagconcentric patternsand irregularconcen- Territon. presently known from Shelburne Bay
tric linesoverthe surfaceand an irregularblack ontheeastcoastofCape YorkandtheArab[faSea
stripe on (he umbonal fold.
REMARKS. P. cotiki sp. nov. differs from P.
Plena COOkl sp It'vitaui Iteiliile, 1939 principally in colour P
<Fig.2A-D)i cooki hein^ pearly white with a dark brown zig-
zag pattern and oblique mys whereas PAwhtittC
ETYMOLOGY ForStephen Cook. has a dark brown, heavily mottled shell with
obscure oblique rays and with no trace ofnacre-
DESCRIPTION.Shell lengthto52.5mm; fragile, ous lustre. P levitate is also more solid, attains u
translucent, elongate, obliquely ovate, dorsal largersize and has more pronounced hinge teeth.
margin straight, unihones extending above mar- ooki cuts sympatically with P hnxiahua
i ' i '
gin line; both valvesconvex, leftmuch more than (Dunker, 1872)butcanbedistinguishedfromthat
theright. Anteriorwing moreorlessanextension species by having a lighter shell, weaker sculp-
(it thedorsal margin withastrongobliquedepres- ture and shorterwings. The browndorsal margin
sion or fold Separating it from the main bod} end fey, consent in P rootd is absent in P.
posterior wing moderately short with an almost breviwata.
274 MEMOIRS OFTHEQUEENSLAND MUSEUM
FIG. 2. A-D, Plenacookisp. nov. A-B,holotype;C-D,paratypes. A,external viewoflv; B, internal viewofIv;
C,external viewoflv; D, view ofpv shown principally from rv aspect. E-G Atrina (S.)palmensis sp.nov. E,
t
external viewofrvofholotype;F,externalviewoflvofparatype:G,internal viewoflvofparatype; H,growth
seriesA. (S.)palmensis(lefttoright: lv'sparatype,holotype, paratype); I,Atrina(S.)pectinata: threejuvenile
specimens (dredged from same locality asA. (S.)palmensis).
NEWMARINFRIYAIYFS 275
Family PINNIDAE Leach,18l9 pus. obs.), although these threads are not pre
served in any of The specimens from the type
AtrinaCray. 1842 scries.
TYPE SPECIES. Atrina milium fBoro, 1778); SM- peJcutvtenantialeweasreweallsloadsreldarggeedsfpreocmimtheenssaomfeAloc(aSl.)
,1847.
ity sometimes occurring in the same dredgehaul
A. (Servatrina) Ircdalc, 1939 asspecimensofA. (S.)palmensis. However .
as very smalljuveniles, these two speciescanbe
TYPESPECIES.Atrimdismalis(Rccvc. 1858). readily separatedon thebasisAofvalveprofileand
external sculpture. Whereas (&)pectinate
Atrina (Servatrina) palmensis sp. nov. hibits marked variation in the numberofribsand
(Fig,2E-H) degreeofornamentation ( Fig. t ),A. (S.)palmen-
sis is remarkablyconstant in its sculpture. Atrina
ETYMOLOGY.For Palm Island. (S.)palmensis compared with the holotype of V
DESCRIPTION. Shell to51 6mm in height; thin, H(Si.s)tpoerryma (MRueesveeu.m1.858)Lhoenlddoinn the(NBaMtuNraHl
relatively small for family. Valvesequivalve and
1252.8.29.41.3) from the Indonesia-Philip;
inequilateral, profiles triangular anteriorly and area, which exhibits a similar narrow valve pro
quadrate posteriorly Both valves well inflated in file, differs in the dorsal edge (hinge) and ribs
proportiontotheshellsize.Dorsalmarginofeach being curved towards the postcrovcntral margin
valve conspicuously convex; ventral margin
(not curved in A. (S.) penna) while the ribs in A.
straight posteriorly,concaveanteriorly; posterior (S.)palmensis are densely ornamented with low
margin truncate, forming a right angle with the
scales,theribsinA. (S. )pennaha.ve strong, raised
postcrovcntral margin; ligament extending ap- scalesmediallytothedorsaledgeandobsolete 10
proximatelyhalfthe lengthalongthedorsaledge
the ventral edge.
from the umbones. Sculpture of well-defined,
narrow ribs (10 ribs/cm measuring from the Family VENERIDAE Rafinesque. 1815
ventroposterior margin), curving strongly to-
wards the ventral edge, ornamented with fine
erect scales which are sparse on the dorsal sur- DosiniaScopoli. 1777
face, stronger and more numerous onthe ventral
TYPESPECIES. Venus eoncenmca Born. \77H:fide
surfaceandobsoletetowards the umbones; inter-
FischerPiellc,I942:M
nally ribsare impressed as deep grooves. Colour
externally horn withpurple-black umbonally; in-
Dosiniacarpentariana.sp. nov.
ternally the nacreous surface covers the antenoi
tfig *A
halfofthe shell. 1 :
MATERIAL EXAMINED HOLOTYPE: AMSC- ETYMOLOGY. FortheGulfofCarpentaria.
Q2l0d3,1d6r0,edIgpevd,,b9emt.weKe.nLPaamlpmrealnld&CuPr.aScpooaoIrs,laNnodvs,1n9o9r0t.h DESCRIPTION Shell length to 38.5mm; ovaic,
Height47.5mm, widthfrom dorsal toventral margins equivalve, moderately inflated, solid; umbones
15.1mm, width of pv 8.9mm. PARATYPES: prosogyraie; lunule heart-shaped, raised een
AMSC203161, Ipv, same data as holotype. H trally, strongly impressed peripherally, sur-
13.5mm, width from ventral lo dorsal margins rounded by the lamcUate ends ofthe concentru*
12.6mm, width of pv 7 2mm; QMM059355, ifv, I principal ribs continueon the lunuleaslamellar:,
brokenrv.offPalm 1, north Old,dredged.K.Lamprell escutcheon long, narrow, defined by a raised,
& P. Spoor, 1989. Height M.6mm, widih from doisul spinose ridge; ligament impressed; antennloisal
toventral margins 16.5mm,depthoflv4.5mm. margin short,convex, sloping, widelyroundedal
HABITAT AND DISTRIBUTION. Dredged to the anterior margin; posterodorsal margin con-
9anmdiCnusraancdoy,awIesleadn-dsc,ovneorrtehdQalrde.as ;between Palm pvoexs,tersiloorpinmga,rgbienc;omvienngtrawlidmealrygirnouenvdeendlyatatnhde
widely convex. Sculpture of numerous, strong,
REMARKS. Atrina (S.J palmensis sp. nov. ap- widely spaced, concentric ridges which b600flfy
pearstoliveshallowlyanchoredtoasandy,weed- lamellose at the antero- and posterodorsal mar-
covered bottom in the Palm-Curacoa Island gins intersticeswith4-6minorconcentric i Id
passage. Freshly collected specimens occasion- Ligament long narrow, brown in colour. Hinge
ally showed traces of byssal threads (Lamprell platebroad.Hingeoflv withanteriorlateral Ei
276 MEMOIRS OFTHEQUEENSLAND MUSEUM
FIG. 3. A-E,Dosiniacarpentariana sp. nov. A, B,external and internal viewsofrvofholotype; C,D, external
andinternalviewsofIvofholotype;E,detailofprimaryandsecondaryconcentricgrowthridges. F-H,Euciroa
queenslandica sp. nov. F, G, external and internal views of lv of holotype; H, dorsal view of pv showing
umbones, lunule andextentofvalve inflation.
NEW MARINE BIVALVKS 277
small, knob-like, bifid, anterior cardinal blade- (Reeve, 850) whichhavewideconcentricridge*
1
shaped, raised, slightly oblique; median cardinal and narrow mtenslices and D incisa (Re
thin, posteriorly oblique; posterior cardinal thin, 1850) which has coarse, concentric ridge* with
oblique, parallel to median cardinal. Hinge ofrv ObSCUre radial ndges medially.
withsockettoaccommodateanteriorlateralofIv:
anteriorcardinal short,joined ai apex wuh mod- Family EUCIROIDAE DaIUK«
erately solid, oblique, raised, median cardinal:
posterior cardinal thin raised, oblique. Musde EuciroaDall. 1881
attachment scars well defined, anterior adductor
scar narrow, elongate; posterior adductor scar TYPE SPECIES VenkordiA wu P)<iH
rear-drop shaped Pallial line line, Pallial sines IS81-M. I
deep, slightly angulatc terminally,ascending, ex-
tending beyond shell median. Colour internally Euciroa qut-enslandiia >p nov
and externally chalk white, periostracutn gfC$ (Flg.3F-H:
MATERIAL EXAMINED. HOLOTYrti: QMMO- ETYMOLOGY. ForQuceiwlsmd
SS,93C6o3nk,ipSv0,rGumir1o9rCNaorvpe1n9t9a0r.iaL.en1g0t*3h0'27S,.0lm3m7,°lh2e.irgEh.t DESCRIPTION Shell lo42.3mm inlength; light
26.4mm, width ol pv 13.3mm. PARATYPES weight but moderatelysolid;moderately inflated,
AMSC107I05, 31v, Gulf of Carpentaria, 12*42 5 S equivalve, with an obscure, oblique ridge poste
'1.7'E. 18m, AMSC123934, Hv, I4°3CT$, norly, preceded by a shallow oblique flexure,
UJ^O.S'H.NWofEdwardRiver.Gulfof'CarpCDtaria, slightly gaping posteriorly. Anteriormargin short,
EdOiwlaIrLdocRhiivei4r..6mG,u1l9f76;ufAMCSatr'p3e0n4t5afrti2a,,ll|v4,*N46W*SO.f almost straight, widely rounded terminally: pos-
2164i1v,20pf7f'EA,IhIeSrmt.R1.ivLeorchm,ouLt9h7B,|GAuMlSfCo1f07Ca0r4p0e,nt2a4rKia. tleerriioorr dmoarrsgailnmanarrgrionwllyongr,ousntdraeidg;ht,vesnltorpailngm,arpgoisn
I17W-2&4vsA.M1S39C°14077-E0,UD,P.SlMvc,MllcObrav,elof&fJA.Cl.beYratldRwiyvne.r woeflnlumreoruonudse,dsmcaolrlt,carva«diaatl sthpeinfolseexurriem,Sscturlonpgteusrte!
mouth, GulfofCarpentaria, I7,,24S. 139°47lE, D.K at the posfierioj third, less so ai the anterioi llrifid
McMIC'hael & J.CW, Yatdwyn, 4-9m, 1953; and almost obsolete at the medial third, more
AMSC123I02. Irv. uf Nassau River, E Gulf of tioticubie ventrally. Colour white, internally na-
Carpentaria, !5 5IS, I41C2PE, CSJRO. 7.3m. Di- creous.
mensionso(largest paratype AVISO0710Vr Lotgth
(
mm. heiiiht 39.6mm, width 10.2mm. MATERIAL EXAMINED. HOLOTYPE; AMSC-
HABITAT AND DISTRIBUTION Trawled mi 2132*03182,88.*8t,pv1,5N2?E4oSi3L'aE,dv3M6u5smg,iaGvhehiI.^onffncaentmrmal Qld.
dredged to 50m in sandy mud; known only from siliceous sponge, WF Ponder. I Loch & P T;*n-iil,
Ihe GulfofCarpentaria. Dec 1977. Length 34.!nun, lieighi 29.20110, width
19.5mm, PARATYPh'S AMSC32T047. 2rv, show
REMARKS.Dositito Carpentaria^sp. nov.can- dataas holotypc. Length oi largest r\ 27.8mm. height
not be confused with any other known Indo-Pa- 2l.6,\vidlhrvS.5inm;QMM0593f)7, lp\, LlvTCaprfc
elflc Dosinia because of its distinctive sculpture on)Channel,offcentralOld,trawled I Win Lengthol
of numerous, strong, widely spaced, concenttic pv,42.3mm. height.^5.^niui. width 24.8mm; lengthoi
ridges, whose interstices have4-6minorconcen- Iv, 38.1mm, height 32.0mm. width 1 1.7mm
tric ridges, Oihct species occuring in northern HABITAT AND DISTRIBUTION. Dredged in
AAustralia are D. amph'uksmoides (Reeve, 18501. i artd siliceous sand to 3t
hlstrio (Gmclin. 1790), ft >.culpta {Hanlcy .vnfra Q
1845) O. ammo Iredale. #30, D. tiwnda (Gray.
1S38K /). mim Smith. 1885, ft exasperate REMARKS. Eucima quetnslandica sp. nov. is
(Philippi, 1847), D. tochi Healv & Lamprcll, similarinsizetoh'.gaUvheac(Dell, 1956) H
1002, D. qaeenslandica Healy & Lamprcll. 1992 ever £. i{tujL'?t\!uiuJira differs in having si
andft laminate (Reeve, 185(5) all Oi which have anterior and posterior dorsal margins (almost
narrow, concentric interstices, without intcrsthial straight in E. y,ulailttjac) and being deeper in the
riblcls; ft ka.spicwi Fischer-Pietle &. Delmas. posterior truncation, additionally it lacks ihe
J967 which has very line COnCCHtrk fifac wuh strong radial, medial sculptureOfK $alutha<c. E.
faint,central radial threads,/}. altemiF\$chcr-P\- queenslarulica differs FromAcreuciroa rasirma
eDtteo*cuDlfairniisMs(,M|e%n7k.e^../M1v8e4w37)if(aGntdneDtin,con191 > TIuHl- .v altateecnkuda,te1p9o3s1teIrniolraacnMdngtlhehasetrxotnegndmecd-
278 MEMOIRS OFTHEQUEENSLAND MUSEUM
FIG. 4. A-F, Corbula (A.)moretonensis sp. nov. A, external view ofrv; B, external view oflv; C, D, sculpture
of rv showing radial pustules; E, F, sculpture showing concentric ridges and massed pustules of posterior
margins.
.
NEW MARINEBIVALVES 279
dial radial sculpture of that species. E. (Notocorbula} monilis Hinds. 1843 and Corbula
quecnslandica attains a far greater size than the (Varicorbula) rotalis Hinds, 1843. It can he
Western Australian E, granifera (Cotton,1931) readily separated from these species in having
and the Indo-Pacific (Northern Territory) £. well defined, narrowly rounded, concentric
&
crassa Thiele Jaeckcl, 1931, (42.3mm in ridges and wider interstices crossed uniquely by
E.queenslandica, 19.2mm in E. crassa and radial pustulesonboth valveswhilethesculpture
6,8mminE.granifera).E. queenslandtca ismore in C (N.) monilis consists of widely rounded
attenuate posteriorly than the Indo-Pacific E. concentric ridges, stronger at (he ventral margin
eburnea Wood-Mason & Aleock, 1891 (roundly and obsolete a! the umbonesand without regular
ovatein £. eburnea)while£.eburnea hasdenser radial lines. C. (V.) rotalis has widely rounded
radialsculpture.E. queenstatubcalacksthetrans- concentric ribs on the rv while the Iv is almost
versely elongate shape of the large Indo-Pacific devoid of concentric sculpture but has well
t trapeziaPoutiers, 1982and hasstrongerradial fined radial ridges, absent on the rv. In addition
sculpture posteriorly and ventrally. the rv in C. {A.) moretonensis just moderately
encompasses the Iv while in C (N.) monilis the
Family CORBULIDAE Lamarck, 1818 rv is much largerthan the Iv, and in C. (V.)rotalis.
the lv is even smaller and more deeply encom-
Corbula Bruguiere. 1797 passed. Very similar sculpture to that ol C. iA.t
moretonensisalsoOCCUfSin C. fA )nuuyjlinruw
IVPESPECIES.CorbulasulcataLamarck,1SOI;3D- Smith. 1885 and C. (A.) taheitensts Lamarck.
Schmidt, 181& 1818, but these are mietl aigeu species (16-
32mm) and more quadrate in shape than C (A.)
Corbula (Anisocorbula) Iredale, 1930 mortonensis.
T\TCSPBaES.Cc'W)«ium^^V*rmvvSnuth, I8H5-OD Corbula (Notocorbula) Iredale,1930
Corbula (Anisocorbula) moretonensrissp.nov. TYPESPECIES, Notocorhuhivu:ariaIredale, 1930-OD
(Fig,4A-F)
Corbula (Notocorbula) stephensoni sp, nov.
ETYMOLOGY. ForMoretonBay. (Fig. 5A-E)
DESCRIPTION. Shell length to 3.0mm, minute, ETYMOLOGY. Forthe late William Stephenson.
solid, moderately inflated, inequivalve; rv more
inflated, encompassing the slightly smaller lv, DESCRIPTION Shell length to 2.0mm, mat
widelytruncate,with a well-defined fold extend- moderately solid; inflated, inequivalve; rv in-
ing from the umbone to the posteroventral mar- flated,widely truncateposteriorly:encompa-
gin. Anterior margin steeply sloping, narrowly the much smaller lv. Anterior margin steeply
roundedterminally posteriordorsalmarginmod- sloping, widely rounded terminally; posutu-i
,
erately sloping, angulate; ventral margin convex. dorsal marginlong,moderatelysloping;posterior
concave anteriorto the posterior ridge, Sculpture margin angulate; ventral margin rounded,
of strong, well-spaced, rounded, concentric ridges cave al the obscure ridge, umbones to poster-
and wider interstices crossed by radial tows of ventral angle Sculpture of rv medially with
minutepustules on both valves. Colourwhite. obscureconcentricridges,strongerventrally with
microscopic radial lirac; lv globose, smonth
MATERIAL EXAMINED. HOLOTYPE: QMMO- medially with obscure concentric striae stronger
59365, Ipv, riff Middle Banks, Moreton Bay. south- ventrally. Colour white.
east Qld, W. Stephenson, between Sept 1972-June
1974. Length 3.0mm. height 2.2mm width 1.7mm. MATERIAL EXAMINED HOLOTYPE. QMMO
T
PARATYPES: AMSC203162, 19p\,samedalaas ho- 59366. lpv Cleveland Bay. north Qld. 19s
r
K AMSC203159, I7p\, same data as holotype; 146 5SE, in 29m. Sept 1990. Length 2.0mm, hi
CAMSC36301.many,Albany Passage,northQld,24m, 1.54mm. PARATYPE; AMC203163, ipv, samedata
Hediey as holotype.
HABITAT AND DISTRIBUTION Dredged in HABITAT AND DISTRIBUTION. Dredged in
d to 10m; Moreton Bay, Qld. sand to 29tn Cleveland Bay, north Qld.
T
RFMARKS. Although Corimla \Amsotorbuh) REMARKS. Corbula Sp. nov. is
moretonensis sp. nov. is rninule like C sinular lo C W.i mon|ilis Hinds. 1843, C
280 MEMOIRS OFTHEQUEENSLAND MUSEUM
FIG. 5. A-E, Corbula(N.)stephensoni sp. nov. A,external view ofrv; B, external view oflv; C, external view
ofrv sculpture; D, ventral sculpture in rv; E, posterior margin oflv showingdetail ofperiostracallayers.
