MOLLUSCA OF NEW YORK 75 



Pisidium virginicum Bourguignat 

 Cyclas dubia Say. DeKay, Nat. Hist. N. Y. 1843. p. 223. (Lake 

 George) 



P is i d i u m virgin i c u m Bourg. Prime, List. 1863. p. 13. (Hud- 

 son river, Buffalo) 



Pisidium virginicum Bourg. Prime, Smith. Misc. Coll. 145. 

 1865. 7:61 



Pisidium virginicum Bourg. Aldrich, Troy List. 1867. p. 3. 

 (Hudson river) 



Pisidium virginicum Bourg. Smith & Prime, An. Lyc. N. Y. 



1870. 9:380. (Westchester county) 

 Pisidium virginicum Bourg. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 



1874. p. 140 



Pisidium virginicum Bourg. Beauchamp, Onondaga List 

 1886. p.6 



Pisidium virginicum Gmel. Carpenter, Naut. 1901. 15:132 

 Pisidium virginicum Bourg. Letson, N. Y. State Mus. Bui. 45. 

 1901. p. 247. (Goat island. Post-Pliocene) 



Pisidium novi-eboracense Prime 

 Pisidium nov. eboracense Prime. Prime, List. 1863. p. 14. 



(Herkimer and Otsego counties) 

 Pisidium nov-eboracense Prime. Prime, Smith. Misc. Coll. 



145. 1865. 7:67 



Pisidium nov. eboracense Prime. Smith & Prime, An. Lyc. 



N. Y. 1870. 9:380. (Westchester county) 

 Pisidium novi-eboracense Prime. Lewis, Buf. Soc. Nat. Sci. 



Bui. 2. 1874. p. 140 

 Pisidium noveboracense Prime. Beauchamp, Onondaga List. 



1886. p.6 



Pisidium ventricosum Prime 



Pisidium ventricosum Prime. Prime, List. 1863. p. 15. (Herki- 

 mer and Otsego counties) 



Pisidium ventricosum Prime. Prime, Smith. Misc. Coll. 145. 

 1865. 7:72 



Pisidium ventricosum Prime. Lewis, Buf. Soc. Nat. Sci. Bui. 2. 

 1874. p. 140 



Pisidium aequilaterale Prime 

 Pisidium aequilaterale Prime. Prime, List. 1863. p. 14. (Hud- 

 son river) 



