’ 
429 WILLIS NOVA SCOTIAN SHELLS—GANONG. 
Alasmodonta margaritifera. Rivers in Annapolis; Sackviile 
River also; pearl producing. 
Cyclas Partumeia, Say. Nearly all of the N.S. Lakes; common. 
Cyclas similis, Say. St. Mary’s River, Truro, from Prof. McCuL- 
LOCH, Truro. 
Pisidium dubium. Dartmouth Lakes, &e. 
Thyasira Gouldii, St. (?) Whole coast; common. 
Serripes Groenlandicus, * CH. St. Margaret’s Bay, Bedford 
Basin ; rare. 
Cryptodon Gouldii, PHIL. + 
Cyprina Islandica, Ltn. Whole coast; common. 
Astarte Striata, LEAcu. ¢ Fishing banks ; rare. 
Astarte semisuleata, LEACH. Do. common. 
Astarte crebricostata, FORBES. Do. do. 
Astarte lactea, Br. & Sow. § 
Astarte castanea, SAY. Halifax Harbor; common. 
Astarte elliptica. N.S. (7); doubtful. 
Cardita Borealis, Con. Fishing banks; common. 
Cardium Islandicum. Bedford Basin, Halifax ; rare. 
Cardium pinnulatum, Con. Fishing banks. 
Cardium edule, Con. Fishing banks; rare, young only; doubt- 
ful species. || 
Mercenaria violacea, {| ScHuUM. Wallace, Tracadie, Sable Island ; 
common. 
Kellia Rubra, GouLD. Sable Island, &e. ; common. 
Gemma Tottenii, Strm. Fishing banks; rare. 
Turtonia Minuta, F. et H. Sable Island ; common. 
Callista covexa, Say. Sable Island; rare. 
Tapes fluctuosa, GOULD. Fishing banks; rare. 
Mactra gigantea,* *(?) GouLp. Sable Island; com. 
* Cardium Grenlandicum, 
+ The same species as Thyasira Gouldii above, though Cryptodon Gouldii is the proper 
ename. Its repetition in the list must have been an oversight. 
{ Astarte compressa, according to Jeffreys (Brit. Conch. II., 316 and V. 183), occurs on 
north-eastern coast of America. 
§ Now considered a synonym for A. semisulcata. 
| The presence of C. edule in American waters has not been confirmed. This was almost 
certainly the young of another species, probably of C. Zslandicum. 
§| Venus mercenaria, 
** In his account of the ‘‘ Edible Mollusca of Nova Scotia” (reprinted in Knight’s Deser. 
Catalogue of the Fishes of N. 8.), Willis shows us clearly by his descriptlon of their size and 
shapes, that by .V/. gigantea he meant what is now called WV. solidissima, and by ©, solidissime: 
he meant our ©, ovalis, 
