176 CONTRIBUTIONS 
Observations. This species resembles the Turbinella py- 
ruloides of Conrad, which, it appears to me, more properly 
belongs to the genus Voluta. It differs from it in being 
more turbinate, in having five folds, in having a more ob- 
tuse spire, and in the striz being few and distant. In 
some of the specimens of the pyruloides in my cabinet, the 
“obscure spiral strie’” cover the whole surface of the 
shell. 
Sixteen species have been observed in England, all in 
the London Clay, except one, which is found in the Crag, 
the V. Lambertii. Thirty-two are given by M. Deshayes, 
twenty-four being in the Paris basin. In the Tertiary of 
Maryland Mr Conrad has observed two species, solitaria 
and Lamberti,* and at Claiborne one, the pyruloides.t 
GENUS MARGINELLA. Lamarck. 
MM. anatina. Plate 6. Fig. 186. 
Description. Shell ovate, smooth ; substance of the 
shell thick ; suture slightly impressed ; spire short, coni- 
cal ; whorls five ; flattened above; columella with 
folds, thickened ; mouth narrow ; outer lip much thicken- 
ed and beautifully crenulate within. 
Length 9-20ths, Breadth .3, of an inch. 
Observations. A single specimen only has come into 
* Fasciolaria Lamberti, (Conrad). 1 Turbinella pyruloides, (Conrad). 
