HANET.LA 



CENERir ( IIAHArTFH 



Shell oval or oblong, more or less deprosseti in conse 

 qiience of liavinga range of varices only on each side, form- 

 ing a somewhat oblique longitudinal series : aperture oval, 

 the labium being miicli arquated ; base canaliculatod. 

 sometimes a little emarginated ; a sinus at the superior trr 

 mination of thp labrum : epidermis distinrt : operruhim 

 horny -^ 



OnSERVATIONl^> 



These are the Frog and Toad shells of collectors, a ge- 

 nus of well marked Marine shells dismembered by La- 

 marck from the Linnean Murex in consequence of their 

 lateral margined character. Montfort made another divi- 

 sion of these shells ; to those with an umbilicated colunif I 

 la lie gave the generic name of Apollon, and those ^vhich 

 have no appearance of umbilicus he named Buflb; these 

 designations, or rather their corresponding words ApolI> 

 and Crapaud, are adopted by Blainville as subgenera ol 

 Uanella. These shells are sufficiently distinct from thosp 

 of any other group and cannot be mistaken, if we exeopt 

 a few species which approach Triton, (a name which 

 ought to be changed, as it had been previously applied as,» 

 scientific designation by Laurenti to a genus of Amphibia) 

 a genus which is distinguished by having its varices rare 

 and not at the equal distances of half volutions from each 

 other The animal does not :?eem to be known, but judg- 



