56 GENUS BUCCINUM. 
56. BUCCINUM SEPIMENTUM, Rane. The Partitioned Buc- 
cinum. 
(Collect. Mass.) Rane, Magasin de Zodlogie, 1832, pl. 18. 
Pl. XVIII, fig. 66. 
B. test4 ovata, conica, ventricosiusculd, solida, levigata, ceerulescente : 
singulis anfractibus cinguliferis, ultimo bicingulifero; epidermi virescente ; 
spird acuta; apertura ovata, albescente, elongata; columella arcuata, 
callosa. 
Shell ovate, conical, slightly ventricose, attenuated at sum- 
mit and base, pretty solid, nearly smooth ; general color, of a 
bluish ash, ornamented with a deeper band upon each whirl, 
and upon the lowest, with two others, distant, and more ob- 
vious; epidermis greenish ; spire pointed, composed of five or 
six distinct, convex whirls; the lowest, much larger than all 
the others together, presenting at the base a pretty deep de- 
current suture. ‘The aperture is whitish, ovate, elongated, 
terminated at the base by a very oblique emargination, and 
above by a canal formed by the prolongation, upon the colu- 
mella, of a callosity which becomes there a thin sharp plate : 
this plate presents the appearance of a partition extending to- 
wards the left lip; the right lip is much elongated, thin and 
sharp. Columella arcuated, covered by a callosity which ex- 
tends a little upon the body of the shell; from the middle 
arises a ridge which descends obliquely nearly to the base of 
the right lip, where it terminates within by a small elevation. 
Length 8 lines. Width 33 lines. 
Inhabits the Bay of St. Anthony, Prince’s Isle, where it is 
found at great depths. 
M. Rang, a distinguished conchologist, first made known this 
singular shell, which he had collected in his voyage of circum- 
navigation. It appears to be closely allied to the Purpure, and 
particularly to the division Monocrros, which it approaches by 
the oblique ridge at its base. 
