260 
REPORT—1843. 
list contains but one species in addition to those named as Irish—the Ter. 
cranium, which is occasionally taken at Zetland. 
Class ACEPHALA. 
Order LAMELLIBRANCHIATA. 
Div. MONOMYARIA. 
Fam. Ostreade. 



Anomia electrica, ee aL 4 eatee Cae one Species ésccesiveesaddaccousdl mild 
»  ephippium, Lin.; A. cepa, Lin.. 
oo  squamula, Lin. ...sscccecsssceceeees WITS sate doecenen ceeds ahve eenee sovccee| ¥ | * | 
» undulata, Gm., Mont. ...... omebteeeitay aves aM edersisteanu ss os teoeee oo} ae | a [tee 
»»  punctata, Turt. poet cbige st aaaahkite cases saltewtee a aivee Ge ae Shisks tet cwmran Cate ofa se 
» cylindrica, Turt.; A. cymbiformis ....... spose ea tbiakeodte cans totessunnaeniees 
aculeata, Mont. ........+s. sialon cog tlie cuddee caine as suhiieeOeanuehwashens| MM Tae 
Ostrea edulis, Lin.; O. parasitica, Turt. (young) oeeseesesececenevececeeseee] | # | # 
Fam. Pectenide. 
Pecten maximus, Lin. (sp.)* .cceseseeseceeeee ACEP ORe eee eee eeerte ceo ces| mala ae 
ss opercularis, TOR aa scat ctew anes Fo SOB OCA ECKL, Rarusneveets sae aeeearen wlel* 
var. P. lineatus ......... apeeane sen teens Ress svedeeobeebel gelprees 
jy SINMOSUSy BUTE ciceveccccveseus peseeecoea Desc amenane eaape de Jap dvecccescee tae tae oi 
»» Glaber, Penn., Mont.  ..sscosessesceseoenee saadtocnisancretnceerbaecmenes selectors te 
syn.? P. nebulosus, Brown ......ssccosecesessenees Gaensien *? 
» levis, Penn., Mont.; P. tumidus, Turt.; P. similis, ae wm 
one species? (E. Forbes) stead asennad neve iapaddeasvaaaceteeeanaee pa 
oA obsoletus, Penn., Don. ...06 aeaaeaiolaniinse seats sasksateocbacese sens deeassnteed ei iase 
varius, Lin. sp.) ascen Sr ReMSeR net aah oun Beciaboseash oseecsuey eve suesetea rae RT | a 
Tamas fragilis, Mont. ..scossscecseeseseses pascieeeeaieie wibeseeectice aeeasthdeeats % |e lee 
» tenera, Turt. Zool. Journ. vol. ii, .s..secscereoees saeidataceeavanseslen 
»» SUbauriculata, Wont, (Sp.) ..sccccscececsccscscscscvescverecssevansenscerel & 
Div. DIMYARIA. 
Fam. Aviculade. 
Avicula atlantica, Lam.t POU UUUUSEESESSCOOSORSUCSII SESE eee EEE * eee * 
Fam. Arcade. 
Arca Noe, Lin. Cee eee eee eee etseee Seeeseeteere PU PERI eee Tae eeelee eee 
»» fusca, Mont. (not Lam.); A. tetragona Of AULNOTS. ..ceccceseecees sel elle be 
» lactea, Lin.?, Mont. (the species marked with doubt by Turton)...}... ool 
a” 
barbata, Brown, Wern. Mem. vol. ii. p. 512. pl. 24. f. 3. (I.) vases 
Pectunculus pilosus, Lin. (sp.) ; P. decussatus, Turt.; P. nummarius, Turt. 

Pa ae? 
Nucula margaritacea, Lam. ; Arca NUCLEUS, Lin. .secccereccccsssescveseocer| x | & |-# | x 
o> Minuta, Mont. (Sp.) wccscserececcecseccecccececsecscsssecsasevscssevecsoee] g | | 
» tenuis, Mont. (Sp.)  --secerees Rat sateatsacacas oavuceiessicnde sshpnensenwennl enaier 
»» © Nitida, Sow. Conch. Illus. f. 20 ....cccssecescscseccceccvcvscscsscvsssslacel x 
Fam. Mytilide. 
Mytilus edulis, Lin.; M. incurvatus, M. subsaxatilis, &C. sssssseeeeeesseeee] x | x | # 
renella decussata, Laskey (sp.); Myt. decussata, Mont.; Cren. ellip- 
tiea;, Brown, Tas.) ies csuscccassssabssuabudes>acesenbsonselppiunverebensesss . 
Modiola vulgaris ; Myt. modiola, Penn. ; Mod. papuana, LOM. oovseseeeees 
> 

tulipa, Lam. eeceee eeeeseees Poe eeveteresnes eeecceres ecceecccvesces eeeceeeses 
* P. jacobeus is noticed by Turton, &c. as an Irish shell, but I believe erroneously. 
+ The specimens of Avicula hirundo obtained by Miss Hutchins at Bantry bay and 
Mr. a en at Portmarnock, are most probably this species. Vide Lam. tom. vii. p. 99. 
2nd edit. 
