GASTEROPODA. 181 



*Pseudosuccinea columella (Say). 



Baker, Spec. Publ. Chicago Acad. Sci., 1911, no. 3, p. 163, pi. 23, 

 figs. 8-20; pi. 24, figs. 1-4. 



Lymnaea columella ^ay, Journ. Acad. Nat. Sci. Phila., 1817, ser. 1. 

 vol. 1, p. 14. No locality. [Cold Water Creek, Mo.] 



Limnaea columella Gould, Inv. Mass., 1870, p. 471, fig. 723. 



Limnea acuminata Adams, Amer. Journ. Sci., 1840, ser. 1, vol. 

 39, p. 374. 



Me. — York, Cumberland, Oxford, Knox and Penobscot Counties. 



Vt. 



Mass. — New Bedford; Winchester; Dan vers; Waltham. 



R. I. — Tiverton. 



Conn. — Branford. 



*Pseudosuccinea columella chalybea (Gould). 



Baker, Spec. Publ. Chicago Acad. Sci., 1911, no. 3, p. 171, pi. 24, 

 figs. 5-13. 



Lymnea chalybea Gould, Amer. Journ. Sci., 1840, ser. 1, vol. 38, 

 p. 196. [Cambridge, Mass.] 



Limnaea columella var. chalybea, Gould, Inv. Mass., 1870, p. 472. 



Me. — Thomaston; Union. 

 Vt. — Lake Hortonia. 



Mass. — Cambridge; Green Lodge Station, Neponset River; 

 Duxbury; Uxbridge. 



R. L — Tiverton; Newport. 



*Radix auricularia (Linne). 



Baker, Spec. Publ. Chicago Acad. Sci., 1911, no. 3, p. 179, pi. 22,. 

 figs. 12-15. Clapp, Nautilus, 1913, vol. 26, p. 116. 



Helix auricularia Linne, Syst. Nat., ed. 10, 1758, p. 774. " in 



EUROPAE FLUVIIS, STAGNIS." 



Mass. — Common in the Charles River about three miles above 

 the Dam, on both the Cambridge and the Boston shores. Intro- 

 duced. 



