116 TESTACEOUS MOLLUSCA. 



and brownish, f . . 1-i. — Indian Seas. — Amboyna? — Hinge simi- 

 lar to V. Flexuosa. 



V. Flexuosa. Lin. 1131. — X>. ^>. 172.— Ch. f.~ 333, 4.—W. 

 t. 7.f. 32.— E. t. 266. /. 6, 7. £ t. 267./. l.—Bl. t. 75. f. 5.— 

 Cytherea F. Lam. 72. Triangular heart-shaped ovate ; an- 

 teriorly produced, attenuated and rather beaked with a fold which 

 produces a slight sinuation of the ventral margin and bounds the 

 concave slope : whitish reddish or greyish with transverse forked 

 ribs : inside uniform white : both depressions lettered and im- 

 pressed, the posterior one elongated- heart- shaped, the other lan- 

 ceolate : hinge with three very divergent teeth, the anterior one 

 almost lateral. 1^. — Indian Seas ? 



V. Macrodon. Desk.— Cytherea M. Lam. 73. Del. t. 

 9.f. 3. — Gaul. t. 83. I. Shape and sculpture of the last, but less 

 beaked : yellowish, unspotted, with the anterior slope livid violet 

 and the forked transverse ribs obsolete on the disc ; inside violet 

 brown anteriorly, anal tooth very large. 1. — South Seas. 



V. Sinensis. Chem. f. 1663.— Omel. 3285.-— D. p. 192.— 

 W. t. 8. f. 76. — Cyprina Tenuistria. Lam. 6. Rounded 

 ovate, rather longer than broad, thick, nearly smooth and fulvous 

 at the beaks which are incurved and sometimes slightly eroded, 

 becoming paler and finally slightly violet at the margin, where 

 also its concentric striae, which are crossed by obsolete longitudinal 

 striae become larger and more prominent : no lunule ; whitish 

 within with the margin crenated and usually stained with violet : 

 hinge with three teeth in each valve of which one is cleft and one 

 narrower than the rest. 1^ . . 2. — China. 



V. Recens. D.p, 182.— Ch.f. 1979.— W. t. 7-f. 54. Ovate 

 triangular, slightly heart-shaped ; ashy white with three brown 

 more or less broad and distinct rays and numerous minute pale 

 reddish dots ; beaks reflected ; lunule ovate, impressed and striated : 

 marginal crenulations very fine ; curvature of the palleal scar small 

 narrow and very acute. 1^ . . If. 



V. Ovata.* Pennant. 4. t.56.f. 56. — D.p. 171. — Lam. 87. 

 —W. t. 7. /. 30.— Lin. Tr. 8. t. 2. f. 4.— Mont. p. 120.— Turt. 

 B. p. 151. t. 9. f. 3. Triangular-ovate, brownish white, mode- 

 rately convex, subequilateral, the acute beaks rather nearer to the 

 somewhat angulated and flattened anterior slope ; with longitudinal 

 grooves rendered scaly by the transverse striae : impressions obso- 

 lete. \. .-f. — British Channel. 



V. Subrugosa. Sow. G.f. 2.—Beeve. t. 67. f. 2.—W. S. t. 

 2. f. 6. Ovate subcordiform, very convex, thick, the ventral edge 

 much arcuated ; pale with three or four broad chocolate-coloured 

 rays, and moderately distant coarse smooth and rounded transverse 

 ribs, which become obsolete on the anterior slope, and towards the 

 ventral edge : lunule heart-shaped, and defined by a line : pos- 



