PELECYPODA. 21 



0. virginica var. meadii Davis, Apteryx, 1905, vol. 1, p. 117, pi. 9, 

 fig. E (young). 



Formerly living in Casco Bay and Damariscotta, Me.; once 

 abundant in various parts of Massachusetts and Cape Cod Bays. 

 Still living in Oyster River, Great Bay, N. H. Common in Vine- 

 yard Sound, Buzzards Bay, Narragansett Bay, and Long Island 

 Sound. Southern oysters have been planted for a number of years 

 in the waters of R. I. and Conn. 



UNIONIDAE. 



*Lainpsilis ventricosa (Barnes). 



Simpson, Descriptive Cat. Naiades, 1914, p. 38. 



Unio ventrieosus Barnes, Amer. Joum. Sci., 1823, ser. 1, vol. 6, 

 p. 267, pi. 13, fig. 14. " THE WiscoNSAN * * * Mississippi, near 

 Prairie du Chien." 



Unio occidens Lea, Trans. Amer. Phil. Soc, 1830, new ser., vol. 

 3, p. 435, pi. 10, fig. 16. 



Vt. — Larrabee's Point; Shoreham; Chimney Point, Lake 

 Champlain. 



*Lainpsilis cariosa (Say). 



Simpson, Descriptive Cat. Naiades, 1914, p. 43. 



Unio cariosus Say, Nich. Encycl., 1816, vol. 2, pi. 3, fig. 2. 

 " Delaware and Schuylkill Rivers." Gould, Inv. Mass., 

 1870, p. 172, fig. 475. 



Me. — Warren; Chickawaukee Pond; Perham Lake. 



Mass. — Connecticut River; Haverhill; ponds in PljTuouth Co. 



Conn. — Connecticut and Housa tonic Rivers. 



*Lainpsilis ochracea (Say). 



Simpson, Descriptive Cat. Naiades, 1914, p. 49. 

 Unio ochraccus Say, Nich. Encycl., 1816, vol. 2, pi. 3, fig. 8. 

 " Delaware and Schuylkill Rivers." 



