TO GEOLOGY. 169 
suture linear; whorls five, flattened; mouth narrow ; 
columella with four folds; outer lip sharp, within striate. 
Length 3-20ths, Breadth 1-20th, of an inch. 
Observations. Like the above, I have had but a single 
specimen of this species to examine. It is, however, per- 
fect. In outline it is very like the last described, but is 
much smaller. It differs also in having no ribs and being 
without the transverse line below the suture. The folds 
are placed, like the above, near the base, and in this it re- 
sembles two recent species described by Pyraudeau, the 
Defrancit and Savignyi.* 
M. fusoides. Plate 6. Fig. 176. 
Description. Shell ovato-fusiform, longitudinally and 
closely ribbed, transversely striate above, furrowed below 
the suture; substance of the shell rather thick; spire 
short, rounded at the apex ; suture irregularly impressed ; 
whorls six, flattened ; mouth linear ; columella with four 
somewhat distant folds; outer lip sharp, within minutely 
and closely crenate. 
Length .4, Breadth .2, of an inch. 
Observations. 'This pretty little species differs from the 
two above described, in being much shorter and wider in 
proportion. It also differs in having transverse striz above 
and having a furrow below the suture. The folds are the 
same in number, but placed higher on the columella, and 
* Catalogue, &c. de L’isle de Corse, pl. 8, figs. 22 and 24. 
Ww 
