282 



SUBEMARGINULA. 



S. LATA Quoy & Gaimard. PI. 64, figs. 21, 22. 



Shell small, rounded, subquadrate, conical, whitish ; vertex curved ; 

 with longitudinal ribs and very delicate interrupted transverse strise ; 

 margin crenulated. Length 8, width 8, alt. 6 mill. ( Q. & G.} 



Amboim 



E. lota Q. & G. Voy. de 1'Astrol. Zool., p. 330, t. 68, f. 9, 10. 



S. PULCHRA A. Adams. PL 28, fig. 28. 



Depressed-conical, green, beautifully rayed with white; vertex 

 subcentral, inclined backward ; radiating ribs unequal, spinose, 

 interstices transversely latticed with elevated lines ; margin of the 

 aperture denticulate, incised in front, fissure short, subquadrate. 

 This resembles the sharper and younger specimens of E. rugosa, but 

 all the radiating ribs on the anterior half of the shell are equal. 

 (Ad.) 



Camaguan, Philippines, low water. 



E. pulehra AD. P. Z. S. 1851, p. 85, no. 24. Sows., Thes., p. 219, 

 f. 50, 51. 

 S. CRATITIA A. Adams. PL 29, figs. 21, 22. 



Ovate, conic, whitish, vertex obtuse, central, scarcely inclining 

 backward ; radiating ribs distant, nodulose ; interstices with two 

 longitudinal riblets and elegantly cancellated with elevated trans- 

 verse lines ; margin of the aperture crenulated, sinuated in front, 

 the sinus quadrate, produced into a canal inside. 'Only the forma- 

 tion of the fissure and cicatrix distinguish this from E. viminea. 

 (Ad. & Sowb.) 



Habitat unknown. 



S. cratitia AD., P. Z. S. 1851, p. 92, no. 19. Sown., Thes., p. 218, 

 f. 91. 



S. NOTATA Linne. PL 63, figs. 34, 35. 



Oval, depressed, ashen, maculated and lined with black ; apex 

 back of the middle, obtuse ; radiating ribs black, rugose, unequal ; 

 front margin scarcely notched, internal groove inconspicuous. (Sowb.y 



West Indies f 



Patella notata L., Syst. Nat. Clypidina notata AD., P. Z. S. 

 1851, p. 87. E. notata SOWB., Thes. p. 220, f. 86-88 ; Conch. Icon, 

 f. 42. 



The habitat, West Indies, given by Adams is doubtful. The spe- 

 cies belongs rather to the East Indian type. 



