STOMATELLA. 19 



whorls of the spire show only two spiral carina?. The spire is short, 

 acute. Whorls 4?, the last rapidly enlarging, descending* toward 

 the aperture. Aperture extremely oblique, oval, reddish, scarcely 

 iridescent. 



Alt. 7, diam. 9-10 ; of aperture, breadth 7, oblique alt. 7 mill. ; 

 greater radius 7, lesser 3 mill. 



Ticao, Philippines ; Viti Is. ; Upolu; Paumotus. 



S. sanguinea Ad., P. Z. S. 1850, p. 32; in Thes. Conch, ii, p. 835, 

 t. 174, f. 30. — Sow t erby in Conch. Icon., f. 2. — S. notata A. Ad. in 

 Thes. Conch., p. 835, t. 174, f. 18-21.— Sowerby in Conch. Icon., f. 

 12. — Martens & Langkavel, Donum Bismarkianum, p. 49. — 

 Stomatia depressa Sowb., Conch. Icon., f. 12, 1874. 



May be known by the bright coral red color, or white with lon- 

 gitudinal stripes, usually broken into distinct squarish spots. The 

 principal spirals above are granose. There is an astonishing amount 

 of variation in degree of depression. It is an abundant Polynesian 

 species. The nacreous layer is excessively thin, especially in the 

 typical form. 



Var. notata A. Ad. PI. 52, figs. 48, 49, 50, 51. 



White with longitudinal stripes or very distinct crimson or 

 purplish spots, visible also within the aperture. Sometimes uni- 

 colored white. 



Alt. 6, diam. 9 i ; alt. 5, diam. 8 ; alt. 5,'diam. 7 mill. 



A mere color-form, not separable from the type by any constant 

 characters. The color, size and proportions are very variable, as 

 will be seen by comparing the measurements given. The greater and 

 lesser radii in the most depressed specimen before me measure 3 

 and 5 mill. The Stomatia depressa of Sowerby, pi. 54, figs. 14, 15, 

 seems to correspond with very depressed specimens of notata before 

 me. 



S. speciosa A. Adams. PL 51, fig. 25. 



Shell orbicu late-conic, white, spotted with blood-red ; transversely 

 keeled, the keels obtuse, prominent, with other smaller keels between 

 them, longitudinally strongly striate. Spire rather prominent, its 

 whorls tri-carinate ; aperture oval, pearly within. (Ad.) 



Grimwood's Island. 



S. speciosa Ad., P. Z. S. 1850, p. 32 ; Thes. Conch, ii, p. 835, t. 

 174, f. 29.— Sowb. in Conch. Icon., f. 9. 



