114 Bryant Walker 



Physa SAi-roRDii Lea. 



Physa saffordii Lea, Pr. A. N. S. P., 1864, p. 115; Jour. A. N. S. P., VI, 



1866, p. t66, pi. 24, fig. 87; Obs., XI, 1866, p. 123, pi. 24, fig. 87. 

 Type locality : Lebanon, Wilson Co., Tenn. ; Verdigris River, Kans., and 

 Nashville, Tenn. 

 Is gyrina according to Tryon (132, p. 162). 



Physa showalteri Lea. 



Physa shozvalteri Lea, Pr. A. N. S. P., 1864, P- HSJ Jour. A. N. S. P., VI, 



1866, p. 170, pi. 24, fig. 92; Obs., XI, 1866, p. 126, pi. 24, fig. 92. 

 Type locality : Uniontov^n, Ala. 



Physa smithsoniana Lea. 



Physa smithsoniana Lea, Pr. A. N. S. P., 1864, p. 115 ; Jour. A. N. S. P., VI, 



1866, p. 169, pi. 24, fig. 97; Obs., XL 1866, p. 125, pi. 24, fig. 91. 

 Type locality : Loup Fork of the Platte River. 

 Is gyrina according to Crandall (27, p. 54). 



Physa sparskstriata Tryon. 



Physa sparsestriata Tryon, Am. J. of Con., I, 1865, p. 224, pi. 23, fig. 10. 

 Type locality : San Joaquin Valley, Cal. 



Physa subrotunda Sow^erby. 



Physa subrotunda Sowerby, Con. Icon., Physa, 1873, Sp. 87, pi. 10, fig. 87. 



Type locality : North America. 



Physa tenutssima Lea. 



Physa tenuissima Lea, Pr. A. N. S. P., 1864, p. 114; Jour. A. N. S. P., VI, 



1866, p. 167, pi. 24, fig. 86; Obs., XI, 1866, p. 123, pi. 24, fig. 86. 

 Type locality: Alexandria, La. 



Is referred to Aplexa by Trj^on (132, p. 17). See Crandall (27, p. 71). 

 His shell now in my collection is a dead, bleached specimen of Aplexa hyp- 

 noriim. 



Physa traskii Lea. 



Physa traskii Lea, Pr. A. N. S. P., 1864, p. 115 ; Jour. A. N. S. P., VI, 1866, 



p. 163, pi. 24, fig. 80; Obs., XI, 1866, p. 119, pi. 24. fig. 80. 

 Type locality : Rio Los Angelos, Cal. 



Is a synonym of P. mrgata Gld. according to Pilsbry and Ferriss ( 108, 

 p. 198). 



