io8 Bryant Walker 



PiiYSA AUREA Lea. 



Is a svnonym of elliptica and not of heterostropha according to Tryon 

 {132, p. 163) and Crandall (27, p. 55). 



Physa bti.lingsii Heron. 



Physa billingsii Heron, Tr. Ott. F. Nat. Club, I, 1880, p. 62, pi. 2, fig. 5. 

 Type locality: Billings' Bridge, Ottawa, Ont. 



Is a var. of intcgra according to Crandall (27, p. 15). 



Physa binneyana Ancey. 



Physa diaphana Tryon, Am. J. of Con. I, 1865, p. 224, pi. 23, fig. 11, non 



Krauss (1848). 

 Physa binneyana Ancey, Le Nat., 1886, p. 35S. 

 Type locality: Oakland, Cal. 



Physa blandi Lea. 



Physa blandi Lea, Pr. A. N. S. P., 1864, p. 116; Jour. A. N. S. P., VI, 1866, 



p. 168, pi. 24, fig. 88; Obs., XI, 1866, p. 124, pi. 24, fig. 88. ■ 

 Type locality : California. 



Includes disting'uenda Try. and " ?" is the same as grosvernori L,ea and 

 nuttallii Lea according to Cooper (25, p. 97). Both of -the latter names 

 have priority. 



Physa brkvispira Lea. 



Physa brevispira Lea, Pr. A. N. S. P., 1864, p. 116; Jour. A. N. S. P., VI, 



1866, p. 173, pi. 24, fig. 98; Obs., XI, 1866, p. 129, pi. 24, fig. 98. 

 Type locality : Ottawa River, Ont. 



Physa carlton]i Lea. 



Physa carltonii Lea, Pr. A. N. S. P., 1869, p. 125; Jour. A. N. S. P., VIII, 



1874, p. 63, pi. 21, fig. 19; Obs., XIII, 1874, p. 67, pi. 21, fig. 19. 

 Type locality : Mount Diablo, Cal. 



Physa coniformis Tryon. 



Physa coniformis Tryon, Am. J. of Con., II, 1866, p. 6, pi. II, fig. 5. 

 Type locality : Humboldt River, Oregon. 



Physa cooperi Tryon. 



Physa cooperi Tryon, Am. J. of Con., I, 1865, p. 224, pi. 23, fig. 9. 

 Type locality : Crane Lake Valley, Cal. 



Is a variety of P. triticea Lea according to Cooper (25, p. 97). 



