PELECYPODA. 49 



p. 160. " Massachusetts * * * in Fresh Pond, near Cam- 

 bridge, AND AT Salem." 



Me. — Square Lake Inlet; Pout Pond, Westbrook. 

 Mass. — Readville; Charles River, Auburndale. 



*Musculiuin deforme (H. F. Carpenter). 



Sphaeriuvi deformis Carpenter, Nautilus, 1902, vol. 16, p. 18. 

 " Coventry, R. I." 



Mass. — Agawam River, East Wareham. 

 R. I. — Tiogue Reservoir, Coventry. 



Musculium truncatum (Linsley). 



Cyclas truncata Linsley, Amer. Journ. Sci., 1845, ser. 1, vol. 48, 

 p. 276. " Stonington, Stratford, and Stratfield [, Conn.]." 

 Gould, Amer. Journ. Sci., 1848, ser. 2, vol. 6, p. 234, fig. 3. 



Cyclas calyculata C. B. Adams, Amer. Journ. Sci., 1841, ser. 1, 

 vol. 40, p. 277 {non Draparnaud). 



Cyclas pellucida Prime, Proc. Boston Soc. Nat. Hist., 1853, vol. 4, 

 p. 277. 



Sphaerium truncatum Gould, Inv. Mass., 1870, p. 106, fig. 411. 



Me. — Aroostook River. 



Vt. — Chimney Point, Lake Champlain. 



Mass. 



R. I. — Nayatt. 



Conn. — Stratford; Stratfield; Stonington. 



Musculium tenue (Prime). 



Cyclas tenuis Prime, Proc. Boston Soc. Nat. Hist., 1852, vol. 4, 

 p. 161. " Massachusetts * * * New Bedford." 



Sphaerium tenue Prime, Smithson. Misc. Coll., 1865, vol. 7, 

 art. 5, p. 47, fig. 44. Gould, Inv. Mass., 1870, p. 107, fig. 412. " 



Me. — Androscoggin River. 



Vt. — Chimney Point, Lake Champlain. 



