TO GEOLOGY. 143 
species from the Tertiary. Sixteen are from the Subappen- 
nines (Pliocene), twelve from Bourdeaux (Miocene), and 
five from Paris (Eocene). In this country a single species 
only, C. lunata (Conrad), has been heretofore observed. 
It is from the Tertiary Beds of St Mary’s. 
GENUS FASCIOLARIA. Lamarck. 
F. plicata. Plate 5. Fig. 142. 
Description. Shell subfusiform, turrited, largely and 
longitudinally folded, transversely and alternately striate ; 
suture irregularly impressed ; whorls eight, convex ; colu- 
mella with two small folds; canal short, reflected; mouth 
ovate, two fifths the length of the shell ; outer lip sharp, 
within striate. 
Length .7, Breadth 7-20ths, of an inch. 
Observations. A very pretty species, remarkable for its 
large folds and well marked transverse strie, which are 
alternately larger and smaller. The striz within are 
strongly marked. 
F. elevata. Plate 5. Fig. 148. 
Description. Shell subfusiform, turrited, transversely 
striate on the inferior part of the last whorl ; suture linear ; 
whorls ——, slightly convex, truncate along the suture ; 
columella with three or four indistinct folds ; canal short, 
slightly reflected; mouth ovate ; outer lip sharp, within 
crenate. 
Length.... Breadth 3-20ths, of an inch. 
