184 CONTRIBUTIONS 
O. Phillipsii.* Plate 6. Fig. 199. 
Description. Shell ovately-fusiform, polished ; substance 
of the shell rather thick; spire elevated, somewhat turrited ; 
whorls six, flattened above; columella with three or four 
oblique folds at the base ; mouth somewhat narrow, rather 
more than one half the length of the shell. 
Length .6, Breadth 5-20ths, of an inch. 
Observations. Differs from the other species here de- 
scribed, in being wider in proportion to its length, and 
having the spire somewhat turrited. This character is 
caused partly because there is no deposit along the canal. 
I have seen no other species among the foreign or Ameri- 
can fossil Olive, without this deposit. 
O. minima. Plate 6. Fig. 200. 
Description. Shell ovate ; substance of the shell thin ; 
spire short and obtuse ; whorls four, rather convex above ; 
columella with about six equidistant folds extending high 
up; mouth long, narrow and curved, being four fifths the 
length of the shell. 
Length .2, Breadth .1, of an inch. 
, 
Observations. This very small species differs from those 
above described, in the spire being short and obtuse, and 
* Named after one of the distinguished authors of “ Outlines of the 
Geology of England and Wales.’’ 
