152 Bryant Walker 



Pluurocera currierianum (Lea). 



Trypanostoma curricrianinn Lea, 01)s., XL 1866, p. 103, pi. 27,, fig. 61. 



PlEurocera cylindraceum (Lea). 



Trypanostoma cylindraceum Lea, 0'l)s., XL 1866, p. 98, pi. 23, fig. 51. 

 Includes P. roancnse Lea, according to Pilsbry (iii, p. 498). 



PlEurocera ExiMiUM (Anthony). 



Has priority over gradatnm (Anth.). 



PlEurocera glandulum (Anthony). 



Is undoubtedly the young of one of the earlier described species of 

 Streplwbasis included in the synonymy of plena. 



PlEurocera gradatum (Anthony). 



Trypanostoma curtatum Lea, Jour. A. N. S. P., VI, 1866, p. 143, pi. 23, 

 H- 53; Obs., XI, 1866, p. 99, pi. 23, fig. 53. 



PlEurocera lEslEyi (Lea). 



Trypanostoma lesleyi Lea, Obs., XI, 1866, p. 102, pi. 23, fig. 59. . 



PlEurocera lewisii (Lea). 



As suspected by Tryon this form is only a striate variety of clevatnm. 



PlEurocera lyonii (Lea). 



Trypanostoma lyonii Lea, Jour. A. N. S. P., VI, 1866, p. 14.1, pi. 23, fig. 55; 

 Obs., XI, 1866, p. 100, pi. 23. fig. 55. 



PlEurocera napoideum (Lea). 



Trypanostoma napoideum Lea, Obs., XT, 1866, p. 99, pi. 23, fig. 54. 



PlEurocera nuciforme (Lea). 



Trypanostoma nuciforme Lea, Pr. A. N. S. P., 1868, p. 152; Jour. A. N. 



S. P., VI, 1868, p. 337, pi. 54, fig. 19; Obs., XII, 1868, p. 97, pi. 54, 



fig. 19. 

 Type locality : Connesauga Creek, Whitfield Co., Ga. 



PlEurocera pumilum (Lea). 



Is probably the young of some other species. If valid however, it will 

 have to be renamed as Plcurocera (Stephobasis) pumilum Lea has priority, 

 tuiless that too should prove to be a synonym. 



