OF CONCHOLOGY. 69 



InTurton's Linne thirty-one species 

 of this genus are described ; seventeen 

 species have been found on the Bri- 

 tish coast ; and the greatest number 

 of them was discovered by George 

 Montagu, Esq. author of the Testacea 

 Britannica, which is by far the best 

 work on Conchology in the EngHsh 

 language. 



Genus 20th.™CONUS. Animal 2l 

 Limax ; shell univalve, convolute, tur- 

 binate ; aperture effuse, longitudinal, 

 linear, without teeth, entire at the 

 base ; pillar smooth. Idinn. Syst. 319, 

 Plate 8th, fig. 20. 



This genus in the Linnean System 

 is divided into fis& families : *truncati, 

 &c. having the spire or turban nearly 

 truncate or flat ; **pyriformis, &c. 

 pyriform, with the base rotundate, 

 and sub-cylindrical, the cylinder one 

 half longer than the spire ; ***elon- 

 gate, with the base rotundate, cylinder 

 twice the length of the spire ; '*^***ven- 



