100 TESTACEOUS MOLLUSCA. 



C. Ornata. Lam. 32.— Ch. f. 369, 370.— E. t. 273. /. 5. 

 Roundish triangular, not ventricose, bluish white, with longitudinally 

 disposed crowded chesnut angular streaks : anterior slope yellowish ; 

 lunule somewhat heart-shaped and defined by a groove. 1-/q. — In- 

 dian Ocean. — Probably a variety of Castrensis.^ 



C. Picta. Lam. 33.— Venus Ornata. D.p. 184.— Ch. f. 

 380, ].—W. t. 7.f. 59. -L. t 272./. 2, 3.— List. t. 259. f. 95. 

 Obtusely heart-shaped, obovate, and moderately convex, smooth, 

 covered with angular linear rufous or chesnut markings, (forming a 

 rude net-work) on a white ground : umbones tumid ; lunule ovate : 

 inside yellowish. 1. — Indian Seas. 



C. TiGRiNA. Lam. 34.— An. Ch. f. 374, 5.— Val. Amb. t. 

 15. f. 16. Ovate, smooth in the middle, and grooved at the sides, 

 white, with small unequal scattered dark brown triangular spots ; 

 lunule small, heart-shaped, and brown. If. — Amboyna. 



C. Venetiana, Lam. 35. — Phil. p. 40. t. 4. f. 8.— Venus 

 RuDis. Pali. 1. t. 20. /. 15, 6.— Del. t. 9. /. 9. Obliquely 

 heart-shaped, ventricose, transversely striated, white with yellow 

 and rufous rays, composed partly of broken angular spots ; depres- 

 sions brownish red : inside whitish. |. — Lagunes of Chioggia, 

 near Venice. 



C. Juvenilis. Lam. 36. — Venus J. Qmel. 3287. — D. p. 

 196. — Ch.f. 405.— E.t. 280./. 2.— TF. ^. 8./. 85. Orbicular, 

 convex, white with brown spots forming indistinct rays, and rounded 

 concentric striae, which become coarser and ridge-like at each ex- 

 tremity ; lunule small heart-shaped and sunken. — Variety. (Rufa. 

 Lam. 37.) Reddish fulvous, with two darker rays. I^. — India. 



C. GuiNEENSis.* Lam. 38. — Turt. B. p. 161. — Venus. G. 

 Gmel. 3270.— Venus Circinata. D. p. \69.— Ch. f. 311. 

 — Born. t. 4.f. 8.— W. t. 7 -f. 24. Obliquely heart-shaped, with 

 raised ridge-like concentric striae ; both depressions dark purple and 

 unarmed, reddish or purplish, with white rays. Variety. Whit- 

 ish with reddish rays. i^E. 265. f. X.)— Variety. Uniform white. — 

 W. Africa. — Shape of next. ^ 



C. DioNE. Lam. 39. — Reeve. t.7\- f. 1- — Venus D. Lin. 

 U25.—D.p. 158.— Ch.f. 271, 2, 3.—W. t. 7.f. \.—E. t. 275. 

 f. 1 . Obliquely heart-shaped, transversely ribbed, with a double 

 row of spines on the anterior slope, reddish purple. 1:^ . . 1^. — 



1 So likewise is Lorenziana of Chemnitz, {f. 1961, 2. — D. p. 

 184.— l^F. t. 7.f. 59.) according to Mr. Gray. 



2 We have copied Schroeter's figure of Gmehn's Venus Caliste, 

 W. t. 7 .f. 27 ■ — D- p. 170.) which is described as resembling this 

 species. It is probably then a Cytherea, but I have not recognized 

 the shell. 



