1^:50 PHVSA. 



10. PHYSA SOLIDA, Phil. 



Plate 8, fig. 6. 



Shell perforate, longitiicUiially ovate, solid, 

 pale horn-color; whorls six, arched, apical 

 whorls pointed, comprising one-tliird the 

 whole length of the shell ; month narrowed 

 by the thickening of the lip ; columella not 

 folded. 



Length 15, diam. 10 mill. 



New Orleans. 



The number of whorls and inliated form 

 together with its solidity will serve to distin- 

 guish it from other species. 



Mexican Species. 



There are quite a number of these, and I 

 would have omitted them entirely from this 

 work if none had been included in the mono- 

 graphs of Haldeman and Binnej^ I confine 

 my remarks to those species only mentioned 

 by above authors. 



