TO GEOLOGY. 111 
FAMILY PLICACEA. 
GENUS ACTEON.* Montfort. 
A. punctatus. Plate 4. Fig. 96. 
Description. Shell ovately conical, transversely and 
closely furrowed ; furrows closely set with punctures ; sub- 
stance of the shell rather thick; spire rather elevated, 
pointed ; suture somewhat impressed ; columella with one 
fold; whorls five; mouth narrow, about three fifths the length 
of the shell ; outer lip thickened about the middle. 
Length 7-20ths, Breadth .2, of an inch. 
Observations. This beautiful little species is remarkable 
for its graceful form and beautifully punctured furrows. It 
is closely allied to the lineata (herein described). It dif- 
fers in being less conical, and in having larger punctures. 
Only one specimenrof these in my possession has the thick- 
ened lip. Of the remainder, one seems young, the other 
broken. Sowerby’s figure of 4. Now, (Min. Conch. plate 
374) has a strong resemblance to this species, but does 
not seem to have the punctured furrows, or thickened out 
lip. 
* Tornatella (Lamarck). 
