436 



STOMATELLIX^.. 



clathratula, A. Adams. 

 coccinea, A. Adams. 

 compta, A. Adams. 

 costellata, A. Adams. 

 decolorata, Gould. 

 decorata, A. Adams. 

 elegans, Gray. 

 fulgurans, A. Adams. 

 haliotidea, Sow. 

 imbricata, Lam. 

 inflata, G. B. Adams. 

 maculata, Quay and Gaim. 

 Malukana, A. Adams. 



margaritana, A. Adams. 

 monilifera, A. Adams. 

 notata, A. Adams. 

 orbiculata, A. Adams. 

 pallida, A. Adams. 

 papyracea, Chem. 

 rufescens, Gray. 

 saiiguinea, A. Adams. 

 selecta, A. Adams. 

 speciosa, A. Adams. 

 sulcifera, Lam. 

 tigrina, A. Adams. 



Genus STOMATIA, Helbling. 



Animal spiral, too large entirely to enter the shell ; 

 frontal lobes digitated ; foot large, tubercular, greatly pro- 

 duced behind, lateral membrane fringed, ending anteriorly, 

 on the left side, in a fimbriated crest under the eye-pedicel, 

 and on the right, in a slightly -projecting fold or gutter lead- 

 ing to the respiratory cavity. 



Operculum none. 



Shell sub-spiral, oblong, or sub-orbicular; spire promi- 

 nent, whorls plicated at the suture, carinated or tuber- 

 cular ; aperture wider than long, pearly within. 



Si/u. Haliotidea, Humph., not Sivains. Stomax, Montf. 

 Sigaretus, Schiim., not Lam. or Cuv. 



Ex. S. rubra, Lamarck, pi. 49, fig. 9, 9, a, 9, b. Shell, 

 S. phymotis, Helhling, fig. 9, c. 



Stomatia, like Harpa and some Nudibranchs, has the 

 power of spontaneously throwing off the hind jDart of the 

 foot when the animal is irritated, and Geiia exhibits the 

 same peculiarity ; specimens in spirits have the foot usually 

 truncated from this cause. The species of Siom.atia are 



