J)74 HELIX. 



Le Fossar. Adanson Senegal, p. 173. 1. 13. f. 1. Favanne, 

 ii. p. 253. t. 70. f. G 1, and G 2. 



Inhabits the Mediterranean. Linnaus. 



Linnaeus, with a reference to Adanson, has given the following 

 description of this species ; " Shell small, resembling a 

 Nerite, white, convex, with a lateral obtuse spire, and six or 

 eight remote compressed elevated transverse lines ; aperture 

 semi-orbicular like that of a Nerite, but the inner lip is not 

 reflected ; the umbilicus is open in young, and nearly closed 

 in old shells." Adanson says it is not more than two lines or 

 two lines and a half in diameter, and uniformly white. 



