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). 



Sphaerium 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. Joum. Sei., 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. 



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

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



Cyclas pellucida Prime, Proe. 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. L— Nayatt. 



Conn. — Stratford; Stratfield; Stonington. 



Musculium tenue (Prime). 



Cyclas tenuis Prime, Proe. 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. 



