KXXlV 



wlih four tcntacula, v/hofe eyes are placed at the fum- 

 jiiit of the two longcft, are hermaphrodite, and are all 

 land fpecies. Thofc with two tentacula, and their eyes 

 iitualcd on the head, are of different fexes ; and except 

 two known fpecies at prefent (Turbo elc^ans, and Cary- 

 chium:) are all aquatic. 



Among this laft divifion, one or two are viviparous, 

 a circumftance not known amongft the land fpecies. 



If under fuch variations thefe animals are all to be 

 ronfidered as Liviace^, the generic charafters mufl be a 

 little more extended than thofe fixed by Linnceus ; and 

 fliould at leafl run thus to comprehend all the varieties. 



Body oblovg, creeping, with a longitudinal flat dijk hc- 

 v.eath ; aperture mojl ufiially placed on the right Jide: ten- 

 tacula tivo, or four : eyes two,^ placed either at the hafe 

 of the tcntacula on the head, or at the extremity of the 

 izoo long eft. 



That the Linnacan Limax ought to be divided there 

 can not be the leaft doubt; but we cannot agree with 

 MuLLER, that it is capable of forming fo many genera, 

 by the mere circumftance of the eyes being placed a lit- 

 tle more or lefs behind, or to one fide of tl:e tcntacula. 

 There feems, however, to be two fhong natural divi- 



fions ; 



* If the animal oi Turbo elegans fhould prove to be poHliTed of four eyes, 

 which we fufptdt, the chaiaiSters muft be further extended .thus, eyes two 

 rarely four, ^c. 



