GASTEROPODA. 189 



Planorbis antrosus striatus Baker. 



Planorhis hicarinatus striatus Baker, Nautilus, 1902, vol. 15, 

 p. 120. " Milwaukee, Wisconsin [pleistocene]." Baker, Trans. 

 Acad. Sei. St. Louis, 1906, vol. 16, p. 9, pi. l,fig. 11. 



Me. — Square Lake; Rockville. 

 N. H.— Profile Lake. 



*Planorbis antrosus portagensis Baker. 



Planorbis hicarinatus portagensis Baker, Nautilus, 1908, vol. 22, 

 p. 45. "Portage Lake, on Fish River, Aroostook County, 

 Maine." Walker, Nautilus, 1909, vol. 23, p. 8, pi. 1, fig. 9. 



Me. — Square Lake; Cross Lake; Second Lake and Moosehead 

 Lake. 



*Planorbis trivolvis Say. 



Say, Nich. Encycl., 1817, vol. 2, pi. 11, fig. 2. " French Creek 

 NEAR Lake Erie." Gould, Inv. Mass., 1870, p. 488, fig. 740. 



Me. to Conn. — Common in most of the ponds and streams. 



*Planorbis trivolvis fallax Haldeman. 



Haldeman, Monogr. Limniades, 1844, no. 7, p. 15, pi. 3, figs. 1-3. 

 "Massachusetts, Lake Erie, Indiana.?" 



Planorhis lentus Gould, Inv. Mass., 1870, p. 490, fig. 741 {non 

 Say). 



Me.— Unity. 



Vt. 



Mass. — Revere; Mystic Lake, Arlington. 



*Planorbis binneyi Tryon. 



Tryon, Amer. Journ. Conch., 1867, vol. 3, p. 197. 



Planorhis corpnlentus Gould, U. S. Expl. Exped. under W^ilkes, 

 1852, vol. 12, p. 113; Atlas, pi. 8, figs. 130, a, b {non Say). " Co- 

 lumbia River, Oregon." 



