268 EMARGINULA. 



E. scabriuscula A. Adams. PI. 28, fig. 31. 



Elongate-elliptical, depressed conic, testaceous, vertex subposterior, 

 inclined backward ; cancellated with sharp, unequal, scaly-sub- 

 spinous radiating ribs and elevated concentric lines ; aperture nar- 

 rower in front, base arcuate, margin creno-denticulate. Distin- 

 guished by the small red spots on the intermediate smaller ribs. 

 (Ad.) 



Habitat unknown. 



E. scabriuscula Ad., P. Z. S. 1851, p. 83, no. 15. — Sowb., Thes., p. 

 213, f. 36 ; Conch. Icon., f. 30. 



E. scabricostata A. Adams. PL 28, fig. 24. 



Oval, much depressed, whitish, ornamented in front with three 

 buff, radiating bands ; vertex subcentral, inclined backward ; radi- 

 ating ribs distant, corrugated, interstices deeply latticed and corru- 

 gated ; margin of the aperture dentate and denticulate, deeply 

 incised in front. The broad ribs of this little fiat shell are minutely 

 scabrous, and E. pumila of A. Adams being similarly characterized 

 the two shells are here re-united. (Soivb.) 



Id. of Corrigidor, Bay of Manilla, on dead shells, 12 fms. 



E. scabricostata Ad., P. Z. S. 1851, p. 85, no. 29. — Sowb., Thes. 

 p. 216, f. 61. 



E. vanikorensis Quoy & Gaimard. PI. 64, figs. 37, 38. 



Shell oblong conic, arcuate, fragile, white ; margin crenulated ; 

 longitudinal ribs rough ; transverse strire granulate ; fissure narrow. 

 Summit median, obtuse, a little inclined backward. The ribs are 

 large, rough, and rendered nodulous by the transverse stria?. (Q.) 



Length 6, width 4 mill. 



Island of Vanihoro. 



E. vanikorensis Q. & G. Voy. Astrol. iii, p. 334, t. 68, f. 19-20. 



E. l^evicostata A. Adams. PL 28, fig. 22. 



Small, elliptical, much depressed, apex subposterior, inclined 

 backward ; with about 14 smooth radiating ribs, the interstices 

 broadly clathrated with longitudinal riblets and transverse lines ; 

 margin of aperture denticulated, deeply incised in front. The can- 

 cellated ribs of this little flat species are comparatively smooth and 

 the interstices deeply pitted. (Ad.) 



Habitat unknown. 



