98 TESTACEOUS MOLLTJSCA. 



heavy, with coarse rather distant irregular grooves, which terminate 

 so as to k^ave the anterior slope nearly glabrous, glossy, pale brownish 

 fawn, becoming orange-chesnut at the margin, with somewhat in- 

 terrupted dark brown rays which vary in breadth and are often 

 crowded; lunule ovate ; inside white. 24-.. 2|. — India. — Variety. 

 White, with two bluish browai rays and scattered angular mark- 

 ings ; the anterior slope unspotted. — New Holland. — Variety? 

 Venus Pactfica. D.p. 175. — Ch.f. 1976. Pale brown, with 

 numerous violet brown rays, and the margin tinged with violet. — 

 China. 



C. LiLACiNA. Lam. 15.— Ch. f. 338, 9.—E. t. 264. /. 3. 

 Ovate, grooved closely, and indistinctly rayed, the margin and in- 

 terior tinged with violet ; lunule livid. 24. — 3IoUuccas. — Not un- 

 like Erycina, but proportionably broader. 



C. Impar. Lam. 16. Obliquely heart-shaped, whitish, with 

 livid fulvous rays marked wdth grooves at the posterior end, which 

 become indistinct as they recede ; anterior slope bluish grey ; within 

 white, with the anterior side empurpled. 2\. — New Molland.^ 



C. Pectoralis. Lam. 18. Ovate, depressed, transversely 

 grooved, violet fulvous, with some very indistinct rays, and the 

 lunule livid, with its edge as well as the suture beaks and anterior 

 slope white with chesnut markings. l.— JPerhaps a young variety 

 of Lilacina. 



C. Planatella. La7n. 19. — Ch. 7. t. 43. /. b.1 Ovate, 

 flattened, transversely grooved, white, with variously shaped fulvous 

 spots, and a violet stain within ; lunule small, ovate, and fulvous. 1. 



C. Florida. Lam. 20. — Del. t. 8. f. 7 • Subcordate, trans- 

 versely grooved, brownish with purple clouds and two or three 

 crimson-brown rays ; anterior slope marked with lines ; lunule 

 chesnut : violet red within. \\. — Florida. 



C. NiTiDULA. Lam. 21. — Del. t. S.f. 4. Ovate-elliptic, rather 

 longer anteriorly, smooth, reddish fulvous, with about two chesnut 

 spotted transverse belts ; beaks and interior whitish. J-^. 



C. Chione.* Lam. 22. — Venus Chione. Lin. 1131. — D. 

 p. 178. — Ch.f. 343.-7^. t. 7. f. 44.— Bl. t. 74. f. 5.— Don. t. 

 17. Ovate heart-shaped, glossy, smooth, fulvous with obsolete 

 rays ; lunule oblong acute and raised in the middle ; cartilage 

 cleft broad: epidermis tawny chesnut. — Europe. 



C. Maculata. Lam. 23.— Venus M. Lin. 1132.— J> p. 

 178.— Ch.f. 345.— List. t. 270. f. 106.— E. t. 265./. 4.—W. t. 

 7.f. 45. Ovate, somewhat heart-shaped, smooth and glossy, white 

 more or less tinged with reddish brown, and marked with livid 

 purple somewhat angular spots, some of the larger of which at 



C. Erycinella (Lam. 17.) is a young Costata. 



