PHYSA. 145 
22. PHYSA COOPERII, Tryon. 
Plate 6, fig. 14. 
Shell small, ovate, rather solid, not inflated ; 
body whorl somewhat flattened above the 
middle, and nearly the entire length of the 
shell; spire very short, eroded, suture not 
well impressed; surface roughly striate; 
columella nearly straight, without fold; lip 
bordered internally with red. 
Length 8, diam. 4°5 mill. 
N. E. California. 
It can scarcely be mistaken for any other 
species, being peculiar for its small size, solid- 
ity and heavy deposit within the labrum. 
(61) 
