228 TESTACEOUS MOLLUSCA. 



obliquely affixed, with concentric lamellne which are compressed on 

 each side..l^. Java. 



C Ruderalis Lam. 15. — Del. t. 13. f. 5. Orbicular, lamellar, 

 whitish, tinged with rose color towards the beaks, the lamellae 

 partly elevated waved and plaited on the larger valve — Variety 

 with the laminae shorter and somewhat curled ; the smaller valve 

 rather convex. South Seas. 



C. Croceata. Lam. 16. — Del. t. 13. f. 6. Suborbicular, flesh 

 or pale saffron coloured, roughened by whitish and rather prominent 

 scales, smaller valve convex ; inside reddish yellow with the mus- 

 cular impression very white and arcuated, inner margin entire. 



C. Japonica Lam. 17. Roundish ovate, convex, reddish, the beak 

 of the larger valve somewhat sinistral, with longitudinal granular 

 grooves towards the beaks, the upper valve marked with transverse 

 concentric grooves and its beaks not prominent. .2 Japan. The 

 description was drawn from some wretched specimens in the Museum 

 at Paris. The interstices of the raised sulci are paler. 



C. Frondosa. Brod. Z. P. 1834 — Z. T. 1. t- 38. /. 1. Sub- 

 lobate, lamellar, light pinkish purple, the lamellae sinuated and 

 foliated ; foliations luxuriant, yellow, streaked and tinged with the 

 ground colour, longitudinally plaited, anteriorly larger, and forming 

 two radiating rows in each valve towards the hinge ; within white 

 the margin purplish and crenulated. .{variety Lamellae more nu- 

 merous, foliations shorter) — Colombia variety. Z. T. 1. t. 38. f. 2. 

 purple, the lamellae crowded, foliations very short. . Mexico. Trans- 

 parent. 



C. Pellucida. Brod. Z. P. 1834.— Z. T. 1. t. 38. f. 3. Stained 

 or streaked with red or rose colour on a white ground, semitrans- 

 parent, lamellae crowded, foliations elongated and pellucid : within 

 white and the margin crenulated. Peru. 



C. Lobata. Brod. Z. Tr. 1. t. 38. f. 4<,5.—Z. P. 1834. White, 

 lobed, subrhomboidal, with radiating striae and close set foliated 

 fimbriated lamellae : inner margin crenated. W. Indies. 



free valve, received into the pit of the sessile one. An elongated 

 curved shelly substance, retained by a convex ligament in the bottom 

 of the beaks in each valve : a very elongated posterior, and a rounded 

 anterior scar in each valve, palleal scar simple, ligament external. 



C. Chamoides Stut. Z. J. 5. p. 98. t. 42. bis. — Sow. G. — Reeve 

 Syst. t. 40. Involute, brownish red or white ; internally of a 

 greenish pearly lustre, attached by the anterior side of the right 

 valve which is of great depth ; left valve but slightly convex ; the 

 clavicular appendage with a groove on the convex side. Port 

 Jackson. 



