PHYSA. 163 



arated. Mr. W. G. Binuey includes Ph. ellvp- 

 iica herein, but I believe it to be distinct and 

 have so treated it. It is a species of wide dis- 

 tribution, but rarely found on the coast side 

 of the Allegheny mountains. It extends 

 westward to Kansas and Nevada, and- south- 

 ward from Michigan to Alabama. 



42. PHYSA ELLIPTIC A, Lea. 



Plate 9, fig. 9. 



Physa aurea, Lea. Plate 9, fig. 10. 

 Physa Troostiana, Lea. Plate 9, fig. 11. 

 Physa oleacea, Tryon. Plate 9, fig. 12. 

 Physa Fehigeri, Lea. Plate 9, fig. 13. 

 Physa Nieklinii, Lea Plate 9, fig. 14. 

 Physa Altonensis, Lea. Plate 9, fig. 15. 



Shell completely oval, with the outline of 

 the spire not elevated above a continuation of 

 the general curve of the body; spire very 

 short, apex minute, suture linear, but mar- 

 gined ; whorls four, rapidly increasing, the 

 last large, narrowly oval ; aperture long and 

 (79) 12 



