of several New Shells. 37 
Drscrirtion. 
A remarkably slender fusiform shell, about an inch long ; the 
spire being of equal length with the aperture ; the shoulder of the 
basal volution, and the middle of the spiral whorls are crossed by 
a carinated ridge ; between which and the suture, are two or three 
elevated transverse strize; the rest of the shell is quite smooth; the 
aperture is white, and smooth within; the inner lip marginated, 
and the pillar 4-plaited. It is covered by a uniform brown epi- 
dermis, beneath which the colour is yellowish; base deeply emar- 
ginate, and slightly recurved. 
Inhabits Sierra Leone, from whence it was received by Mr. Mawe. 
It is a species at once distinguished by its crenated whorls, 
and should be placed in the same division as M. vulpecula and 
melongena. 
Mitra STRIGATA. 
M. testa levi, castaned, strigis longitudinalibus obsoletis, al- 
bentibus ornata; apertura spira breviore, alba; columella 4-plicata. 
Shell smooth, chestnut, with obsolete longitudinal whitish 
stripes; aperture white, shorter than the spire ; pillar 4-plaited. 
Habit of M. carbonaria, Sw. and M. melaniana, Lam: the specimen 
before us measures two inches in length, the spire occupies an inch 
and one-tenth and is rather thick. The top of each whorl where it 
joins the suture, is turned and prominent, every part of the shell is 
destitute of sculpture and very smooth; the base is contracted and 
the pillar has four teeth, with the indication ofa fifth. The colour is 
arich glossy chestnut, striped at unequal distances, with paler, 
narrow, longitudinal stripes, which form dots of pure white adjoin- 
ing the suture; the aperture and inner lip are also white. 
The only specimen of this beautiful mitre with which I am ac~ 
quainted, is in the possession of Mr. Mawe. 
Mirra Bicotor. 
M. testa leevi, fusiformi, alba, facia fusca lata cinctd, spira anfrac- 
tusque vasalis parte superiore striis cancellaiis punctis insculptis ; 
striis basalibus simplicibus. 
Shell smooth fusiform, white with a brown band; spire an ., 
