112 



POPULAR CONCHOLOGY. 



uncini on each side ; branchial plume single.* — About 100 

 species ; also fossil. 



Found on the coasts of India, China, New Holland, 

 England, &c. About seven are British. The animals are 

 said to be carnivorous, living on small bivalves. The 

 masses of eggs of this genus appear to be very curious ; 

 Forbes describes them as in the form of a spiral ribbon 

 or strap, rendered firm by agglutinated sand. 



Cernina. Gray, (Globularia Sw. ; 

 Anomphala Jonas.) — Shell globular, no 

 umbilicus, inner lip thickened, so as to 

 cover part of the last whorl ; aperture like 

 Natica. Animal and operculum unknown. 

 — 1 species ; also fossil. 



A genus made for the pretty Natica 

 Jluctuata. 



Deshaysia. Raulin. — Shell, having the inner lip with a 

 toothed edge, therefore removed from Natica. — Fossil. 



SiGARETUS. Lam. (Cryptostoma Blain ; Oxynoe Ra- 

 jin. ; Stomatia Browne,) — Shell ear-shaped, 

 aperture very large, right lip thin ; not 

 pearly inside ; operculum horny and very 

 small. Animal exactly like Natica, only 

 still larger in proportion to the shell, 

 within which it cannot entirely draw itself. 



26 Species; also fossil. Sfeoretw haBoto^es. 



The species are brought from the Indian seas, both 

 East and West ; and Africa. The shell is almost hidden 

 within the mantle, and from this cause probably, is devoid 

 of colour ; some species are solid and thick, others thin. 



* Forbos's British .Moll. 



