STOMATIA.— Plate I. 



inter carinas excavato ; infra irregulariter tuher- 

 cidato. 



The obscure Stomatia. Shell obliquely subquadrate, 

 varied with very pale red, wrinkled with rounded 

 tubercles and plaits; spire small, asserted; the 

 last whorl plaited and excavated at the suture; 

 deeply pitted between the plaits ; then belted with 

 an elevated tubercled keel, and at the middle with 

 a doubled prominent keel ; excavated between the 

 keels ; irregularly tubercled below. 



Lamarck. Anini. sans Vert., sp. 2. 



Hab. Suez. 



This remarkable form may possibly only represent a 

 variation of St. phymotis, and its identification as 

 Lamarck's shell is by no means clear. It is admitted 

 here, however, as it is recognised in collections. 



Species 4. (Fig. a, b, Mus. Brit.) 



Stomatia tuberculata. Sto. testa auriformi, valdc 

 di'pressd, spiraliter striata, variegatd, ad suturam 

 validi plicatd ; stiprd et infra medium anfraciuum 

 bicarinatd ; carinis tuberculatis ; apertnrd magna, 

 labia columellari usque ad apiccm perspective 

 spiinli. 



The toberculatei) Stomatia. Shell auriform, much 

 depressed, spirally striated, variegated, strongly 

 plaited at the suture ; two-keeled above and below 

 the middle of the whorls; keels tuberculated ; 

 aperture large, columellar lip perspectively 

 spiral as far as the apex. 



A. Adams (Microtis). Proc. Zool. Soc, 1850. 



Microtis tuberculata, H. and A. Adams. 



Hab. Isl. Capul, Philippines. 



