53 



p. 196, No. 18. Dull wWte, ovate, thin, very finely ribbed, and decussate, 

 with irregiilar lines of growth. Not common. Long. 25, lat. 44, alt. 18. 



RuPELLARiA CARDITOIDES, Lamavck, Vol. 6, p. 164. Oblong, square, 

 ribbed, and concentrically regularly exfoHate. Not common, and in S.A. 

 Long. 28, lat. 37, alt. 17. 



CAEDroM TENUicosTATUM. LamarcTc, Vol. 6, p. 372. Ventricose, finely 

 ribbed and somewhat shining, with sometimes a bristly periostraca, which 

 appears under the microscope as a corrugated scurfy curved fringe along the 

 ribs. Very common, and in all extra- tropical AustraHa. Long. 40, lat. 35, 

 alt. 35. But often much larger. 



Cardium pulchellum. Reeve, Icon, pi. S,Jig. 42. Small, finely ribbed, 

 and posteriorly tuberculated, whitish, handsomely rayed with orange. It 

 occurs in S.E, A. , but the Tasmanian specimens are much smaller, measuring 

 only long. 8, lat. 9, alt. 5. 



Cardium papyraceum. Chemnitz, Conch. Cab., Vol. 6, p. 190, 'pl. 18, 

 Jig. 184. I believe that this shell has been found in Tasmania, 

 but all the specimens lately shown as such to me I can only regard 

 as varieties of C. tenuicostatum. 



Cardium cygnorum. Deshayes. River Mersey, and Tamar Heads. 

 W. F. Petterd. 



Chama ? Circular Head. W. F. Petterd. 



LuciNA DiVARiCATA. Linn4, Syst. Nat., 12 edit., p. 1120. A very pretty 

 globosely orbicular, waxy white shell, divaricately striate. Common, and 

 in S.A. Long. 26, lat. 27, alt. 15. Foimd almost all over the world. It 

 was found first in the Mediterranean, and, until lately, when found else- 

 where, was thought to be another species. This is Von Marten's opinion 

 (Crit. List. Moll. N. Zealand, p. 46), but the species are great wanderers, 

 and the opinions of naturahsts, as to the range of certain shells, have 

 wonderfully changed since the revelations of deep sea dredgings. 



LuciNA MINIMA. Tcnisou- Woods. 



LuciNA PECTEN. LamarcJc, Vol. 6, p. 230. Small, white, somewhat 

 transverse and depressed, with numerous fine bifurcating striate ribs. 

 Long. 14, lat. 13, alt. 8. Rare. King's Island. This shell occurs in the 

 Mediterranean, West Indies, E. Coast of Africa, but I believe has never been 

 detected in Australian waters before. There can be no doubt of the identi- 

 fication, as I have compared our shell with type specimens from Europe. 

 Sowerby proposed to make a new species of the western forms, considering 

 them distinct becaiise of the remote habitat. 



LoRiPES icTERiCA. Heeve, Icon., Lucina, pl. 10, Jig. 60. "A small 

 white shell, finely concentrically (vmder the lens) radiately striate ; Ugament 

 internal." — Angas. There is great difficulty in detecting the radiating 

 striae in the Tasmanian specimens. Long. 8, lat. 9, alt. 5. Common. 



DiPLODONTA TASMANiCA. Tenisou- Woods. 



PoRONiA AUSTRALis. Sowcvby, Jouv. de Conch., 1863, p. 287, pl. 12, 

 Jig. 8. Very small, nearly smooth, tinged rose at the margins. Common 

 everywhere, and in Australia. Long. 3, lat. 4, alt. 2. The generic name 

 Lascea, of Leach, was anticipated by Recluz, and Leach himseK abandoned 

 it for Autonoe. Of his Lascea, Gwyn Jefireys says, " he says nothing of the 

 animal, and scarcely more of the shell." 



PoRONiA scALARis. Phil. Commou, S. Coast, under stones at low water. 

 W. F. Petterd. 

 Pythena TASMANICA. Teuison- Woods. 

 GouLDiA PETTERDi. Tenison- Woods. 

 Kellia atkinsoni, Tenison- Woods. 



