226 C O N C H O L O G Y. 



Buccina, fome particulars excepted, which 

 I fliall fpecify. 



I now proceed regularly on eacli g^- 

 nus, viz. 



Genus I. Murex or Rocks. Shells whofe 

 mouth is oblong, narrow, and ends gutter 

 wife at top ;' the clavicle or turban generally 

 Ihort or near flat, and the pillar is wrinkled 

 orpieated. They are moft commonly very 

 thick Shells, and extremely rugged aiid 

 rough on the outfide, from their being 

 wrought w^ith bumps, prongs, foliated, 

 and other works. PI. V. fig. i. 



T^his genus is pretty numerous, and 

 fome of the fpecics are vaftly large and 

 heavy. 



Genus 2. Rhombi. Shells whofe fub- 

 ordinate charafter is to have always a 

 rhombic fhape or contour, from which 

 particular alone, a^ it carries an idea of 



A ' ths 



