P L A T E CLV. 



FIG. I. L 

 TROCHUS CONICUS. 



CONIC TROCHUS, OR TOP SHELL. 

 GENERIC CHARACTER. 



Animal a Slug. Shell conic : aperture nearly triangular. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell conic, smooth, whitish, obliquely lineated with brown, 

 whorls flattish, and finely striated. 



Trochus conicus : testa conica laevi, albida oblique fusco lineata : 

 anfractibus planiusculis subtiliter striatis. 



A small shell bearing some affinity with Trochus Conulus, from 

 which it is notwithstanding perfectly distinct ; as a British shell we 

 believe it is altogether new ; nor does it seem to be described by any 

 foreign author. Four of these shells were picked up on the sea coast 

 of Devonshire by J. Laskey, Esq. from whom we received the 

 specimens represented in our Plate. It has been since communicated 

 also from the Mediterranean sea. 



d 2 



