CONCHO LOGY. 



1. Genus, VOLUTELLA. 



Character. — Shell univalve, spiral, the central pillar fluted 

 with four flutes ; the body and external cheek 

 invested with tubercles irregularly placed. 



Species. — Volutella divergens ; Shell conical, angulated ; 

 of a bright yellow colour ; the surface irregularly 

 spinous all over ; mouth oblong and labiated, of 

 a rich pink colour. 



This Species is very rare, is a Native of the Indian 

 Ocean: and is delineated from an Original Shell in the Col- 

 lection of Mr. Green HALL) of London. The Genus is 

 not very numerous, containing only about fifteen known 

 Species. 



2. Genus, SEPTA. 



Character. — Shell univalve, spiral, having membranceous 

 septa or divisions, placed upon the body and spire 

 opposite and alternate ; these are of a different 

 colour to the rest of the Shell, and slightly tuber- 

 culated. 



Species.— Septa scarlatina ; Shell small, one inch and a half 

 long ; striped with scarlet bands, upon a yellow 

 ground ; the mouth white, verging to a brown 

 colour. 



This beautiful little Shell was formerly placed erro- 

 neously with the Genus Buccinum : it is a Native of 

 Amboyna, in the East Indies, and varies from itself some- 

 times in having the colours very pale : It lias been called 

 by the Germans the Liveryhorn. From a Shell in the 

 Collection of the late Mr. Willson. 



