EMARGINULA. 



259 



E. striatula Quoy. PI. 64, fig. 2. 



Shell ovate-conic, fragile, granulose, very delicately ribbed longitu- 

 dinally and transversely ; vertex oblique, recurved ; margin 

 crenulated ; slit deeply excavated. 



Length 10, breadth 7, alt. 7 mill. (Q.) 



New Zealand. 



E. striatula Q. & G. Zool. Astrol. iii, p. 332, t. 68, f. 21, 22.— 

 Not E. striatula of Sowerby, Thes. Couch., f. 59, and Conch. Icon., 

 f. 47. 



I do not know what the E. striatula of Sowerby may be, but it is 

 certainly not Quoy's species. 



E. capuloidea Nevill. PI. 41, fig. 39. 



Shell small, regularly ovate, capuloid, thin, pellucid ; apex pos- 

 terior, arcuately incurved ; surface marked with very many acute, 

 equidistant riblets alternating with more delicate ones ; interspaces 

 rudely and deeply pitted ; margin of the aperture deeply crenated ; 

 fissure central in front, narrow and moderately incised ; pallial 

 impression rounded behind, deeply insinuated laterally at the apex, 

 prolonged and gradually wider in front, truncate at its termination. 

 Length 5-i, breadth 4, alt. 3 mill. (Nev.) 



Southern province of Ceylon. 



E. capuloidea G. & H. Nevill, Jo urn. Asiat. Soc. Beng. xxxviii, 

 p. 161, t, 17, f. 16, 1869. 



The most nearly allied species to the above is E. crassicostata 

 Sowb. ; it is however much smaller, more elevated, not narrowed 

 anteriorly, and the sculpture is somewhat different. (Nevill.) 



E. crassicostata Sowerby. PI. 29, figs. 30, 31, 32. 



Oval, somewhat narrowed in front, with close, thick, noduliferous 

 radiating ribs, the interstices clathrate ; apex posterior ; back 

 arched; cicatrix above the suture carinated, foveolate. Oval, 

 arched, with thick, rather close beaded ribs, the apex very pos- 

 terior. (Sowb.) 



Habitat unkuoiuu. 



E. crassicostata Sowb. Thes., p. 214, f. 41, 42. 



E. retecosa A. Adams. PL 28, fig. 34. 



Shell elevated-conical, elliptical, whitish, vertex subcentral, 

 inclined backward ; ornamented with equal, subnodose radiating 



