TO GEOLOGY. 175 
V. Parkinsonii.* Plate 6. Fig. 184. 
Description. Shell subturbinate, very closely covered 
with minute, transverse striz ; substance of the shell rather 
, flattened 
above ; mouth rather contracted ; columella with four 
thin ; spire ; suture linear ; whorls 
folds ; outer lip sharp. 
Length.... Breadth .4, of an inch. 
Observations. This very closely resembles the last spe- 
cies. It differs in being less turbinate, in having more 
closely set strie, and in having one tooth less in number. 
Unfortunately, I have but one specimen, and that with the 
spire removed. The relative character of four or five folds, 
in this and the last described, may differ in other individu- 
als. The species are, nevertheless, distinct. 
V. Cooperii.t Plate 6. Fig. 185. 
Description. Shell pyriform, inflated, obtusely angular 
above, furnished on the inferior part with about ten distinct, 
oblique, distant striz; substance of the shell somewhat 
thick ; suture small and subgranulate ; spire very slightly 
elevated, rounded at the apex ; whorls flattened above ; 
canal very short and wide; columella with five folds; 
mouth long and lunate. 
Length 1.2, Breadth .9, of an inch. 
* Named after the author of ‘“ Organic Remains” and ‘ Outlines of 
Oryctology.” 
+ Named after my friend, William Cooper, distinguished for his know- 
ledge in natural science. 
