32 STOMATIA. 



S. duplicates SOWB., Genera, Stomatia f. 3. A. ADAMS in Thes. 

 Conch, ii, p. 841, t. 175, f. 61-63. SOWB., in Conch. Icon., f. 11. 



Far more depressed than S. phymotis or australis. The strongly 

 marked double nodose keel will separate it from the following. 



S. ACUMINATA A. Adams. PI. 54, fig. 18. 



Shell Haliotis-shaped, suborbiculate, rather brown, cancellated, 

 transversely costate, ribs 3, prominent, middle one very prominent, 

 tuberculate ; strongly plicate at the suture, longitudinally elevately 

 striate ; spire rather prominent, acuminate ; whorls 4, angular ; 

 outer lip with 3 angles. * 



This is a cancellated, transversely-ribbed species, strongly plicate 

 near the suture. (Ad.) 



Philippines Is. 



S. acuminata AD., P. Z. S. 1850, p. 34 ; Thes. Conch., p. 843, t. 

 175, f. 64. SOWB. in Conch. Icon., f. 7. 



S. DECUSSATA A. Adams. PI. 54, fig. 12. 



Shell ovate-oblong, longitudinally and transversely decussately 

 striate, with 2 simple or subtuberculated angular, prominent carinse ; 

 pale, varied with brown spots ; spire elevated ; aperture oblique, 

 nearly circular, lip biangulate in the middle. 



This species is decussated with transverse and longitudinal striae, 

 and there are two prominent, angular, keels on the whorls ; the 

 spire is acute and prominent. (Ad.) 



Luzon, Philippines. 



S. decussata AD., P. Z. S. 1850, p. 34 ; Thes. Conch, ii, p. 843, t. 

 f!75, . 60. SOWB., in Conch. Icon., f. 6. 



S. ANGULATA A. Adams. PI. 54, fig. 6 ; pi. 51, figs. 29, 30. 



Shell depressed, thin but rather solid, with very short, conical 

 spire ; greenish-gray, obscurely longitudinally striped with dull, 

 pale reddish-brown ; surface lusterless, with numerous unequal spiral 

 threads, latticed by wavy riblets of growth ; the whorls encircled by 

 two strong carinse above, and numerous smaller lirse below the 

 periphery ; and with strong, short subsutural folds. Whorls 3*, the 

 last large, depressed, impressed at the place of umbilicus. Aperture 

 oblique, subrotund. 



Alt. 7, diam. 9 mill. ; aperture, alt. 6J, breadth 6? mill. 



Luzon, Philippines. 



