90 PATELLA. 



P. spectabilis DKR., Ind. Moll. Guin. Infer., p. 39, t. 6, f. 7-9. 



Should be compared with P. ccerulea var. aspera. 

 P. SAFIANA Lamarck. PI. 55, figs. 19, 20, 21. 



Shell ovate-oblong, convex, variable ; having equal radiating 

 flattened white ribs, the interstices brown ; apex subacute, inflexed. 

 It is of grayish whitish above, and rayed between the ribs with yel- 

 lowish or slightly brown rays. The internal border is of a bluish 

 nacre. {Lam.} 



Ocean coast of Morocco. 



P. safiana LAM., An. s. Vert, vi, p. 329, 1819. DELESSERT, Kec. 

 de Coq. t. 22, f. 2. 



The following species, conspicua Ph., is probably identical with 

 this forgotten Lamarckian shell. 



P. CONSPICUA Philippi. PL 56, figs. 25, 26, 26. 



Shell rather thick, ovate, a little broader behind than before, with 

 about 34 flat, somewhat sharply angular, coarse ribs, and about 

 double that number of weaker riblets in their interspaces ; the 

 border is irregularly toothed and crenated by these ribs. The apex 

 lies at the front third of the length ; the front slope is straight, back 

 slope convex. The color is whitish, with blackish-brown interrupted 

 rays, here and there connected by transverse strise. Inside, the outer 

 portion is whitish, showing the external black rays through the 

 shell ; in the center more or less reddish-yellow. Sometimes the 

 reddish-yellow color, includes the central area and the muscle-im- 

 pression, sometimes the muscle-impression is the darkest reddish- 

 yellow, and the centrum itself lighter. {Phil.} 



Length 80, breadth 62, alt. 24 mill. 



Gaboon, Guinea. 



P. conspicua PHIL., Abbild. iii, p. 71, t. 3, f. 1, October, 1849. 

 DKR., Ind. Moll. Guin. Infer., p. 43.? REEVE, Conch. Icon., f. 12. 



I have not identified this species with certainty. The original 

 figures and description are given. 



It is doubtful whether Reeve's figures represent this species. I 

 have copied them on pi. 21, figs. 47, 48. 



P. LUGUBRIS Gmelin. PI. 57, figs. 32, 33, 34, 35; pi. 12, figs. 39, 



40, 41, 42, 43, 44. 



Shell conical, short-oval, solid ; the apex situated in front of the 

 middle ; slopes slightly convex ; sculptured with numerous (34 to 



