STOMATIA, 



by any portion of the last volution. Volutions from two 

 to four. Muscular impressions two, seldom distinct, 

 nearly marginal, and in the open part of the shell. 



Stomatia appears to be related to Haliotis, and is 

 therefore rightly placed by Lamarck in his Macrostomes ; 

 one of its species is arranged as an Haliotis by Linneans, 

 under the name of H. imperforata; of course its distin- 

 guishing mark is very easy. We do not pretend to discuss 

 the question of their resemblance to Lamarck's Tiirhi- 

 nacees; but only observe, that in general form, some of 

 them approach very nearly to some of Lamarck's Mmo- 

 dontes. 



The Stomatia are marine; all the species we have 

 seen, have been brought from the East Indies and New 

 Holland. We have never seen any fossil species. 



Fig. 1 . Stomatia imbricata ; Stomatella imbricata, Lam. 



2. sulcifera : sulcifera, Lam. 



3. duplicata, Nob. Testa suborbicularis, spira prominula, an- 



fractibus mediane bicostatis, prope suturas undulatis ; costis leviter nodxilosis ; 

 apertura orbicularis. 



4- Phimotis, Nob. Stomatia Phymotis, Lam. Haliotis im- 



perforata, Chemn. 



5. Auricula; Stomatella Auricula, Lam. 



6. plamdata; plamilata, Lam. 



