TURBO. 1 1 I 



cies in which it has an inclination to oval or ovate, 

 still it is, or ought to be, without the slightest an- 

 gularity. Much as the cancellate and tapering 

 sections differ in outward properties of figure from 

 the preceding divisions, yet the internal chamber 

 is equally round and entire in all. There does not 

 appear, therefore, any just reason for separating 

 from the genus those species which are not defective 

 in the principal generic character laid down ; but 

 some approach too near the Helix and other tribes, 

 to remain unmolested in their present situation. 

 Doubtful species, of which there are unquestion- 

 ably but too many, must be learnt by experience 

 only. The exact limits of each genus should be 

 well understood, and then no great inconvenience 

 can arise from the errors of a catalogue. 



The name of this genus is as closely connected 

 with that of its predecessor, as are the individual^ 

 which severally compose them ; Turbo signifying, 

 like Trochus, any thing which iihorls round, a top, 

 a wheel. Both genera are found among the rock,^ 

 on cragg)" shores, and on the sands, after a storm 

 has detached them from their accu-jtomed refuge. 



