STOMATIA. 35 



vex beneath transversely finely granose-cingulate, and sculptured 

 with longitudinal elevated, distant, obsolete, flexuous, very oblique 

 stria? decussating the cinguli ; aperture moderate, ovate-rounded ; 

 throat pearly, marked with blackish spots. 



Alt. Si, diam. 6 } mill. (Canefri.) 



Sorong. 



Stomatia pallida Tapp. Can., Annali del Museo Civico di Storia 

 Naturale di Genova ix, p. 288, 1877. 



Subgenus Microtis H. & A. Adams. 



Microtis Ads., P. Z. S. 1850, p. 36. — Microtina Ads. olim. — Mi- 

 crotina Ads., Crosse, Journ. de Conchyl. 1871, p. 188. 



The animal of Microtis is like Stomatia, but the foot has a deep 

 anterior fissure for the snout, the front edge bilobed. There is no 

 operculum. 



M. tuberculata H. & A. Adams. PI. 54, figs. 25, 26, 27. 



Shell tuborbicular, ear-sbaped, greatly depressed, variegated with 

 green, transversely striated, bicarinated ; keels tuberculated, nodosely 

 plicated near the suture ; spire scarcely elevated, whorls carinated ; 

 aperture large, oval, pearly within, with two concentric parallel 

 grooves. (Ad.) 



Is. of Capul, Philippines, on the sands, high water. 



M. tuberculata Ads., P. Z. S. 1850, p. 36.— Ad. in Thes. Conch, 

 ii, p. 841, t. 175, f. 45-47. — Stomatia tuberculata A. Ad., Sowb. in 

 Conch. Icon., f. 4. — Microtina tuberculata Ad. Crosse, Journ. de 

 Conchyl. 1871, p. 191. 



Adams' figures of the animal of M. tuberculata are reproduced on 

 pi. 54, figs. 28, 29, 30. 



M. compta Martens & Langkavel. 



Pale greenish-yellow, with blackish zigzag stripes. Ribbed like 

 Stomatella notata Ad., but the prominent ribs are stronger, with 

 large white and blackish spots. The last whorl less depressed than 

 in S. notata. Columellar margin thickened, nacreous, so broadly 

 concave that one can see almost the entire second whorl within it, 

 from beneath, as in Microtis tuberculata, while this is not the case 

 with S. notata or S. splendidula. 10 mill, in greater diameter, 7 high, 

 aperture 7i mill. Distinguished from M. tuberculata Ad. by the 

 rounded shell, with less prominent spiral keels. In all of these 

 species the inter-liral spaces are finely spirally striated ; and oblique 



