356 TESTACEOUS MOLLUSC A. 



p. 68. Ovate, very inequilateral, shining, pale yellowish white, sub- 

 ventricose, not very solid, smooth or with irregular concentric 

 wrinkles ; ventral edge entire, subarcuated ; front extremity bluntly 

 rounded ; hinder extremity attenuatedly rounded ; ligamental edge 

 not much sloping ; beaks very acute, much inclined ; lunule not im- 

 pressed, defined by an incised stria ; no dorsal area ; ligament not 

 prominent; inside wholly white. l£...lf» "Jamaica." 



Cytherea varians (t. 15, f. 33), Hani. Z. P. 1844, p. 109.— Sow. 

 Th. 2, p. 639, t. 133, /. 138, 9.— Dione v. Desk. Vener. p. 66.— 

 C. rubiginosa, Phil. N. C. teste Sow. Ovate-heart-shaped, inequi- 

 lateral, subventricose, thinnish, white, variegated by chestnut-brown 

 angularly flexuous lines and spots ; with groove-like concentric striae, 

 which are chiefly conspicuous posteriorly ; lunule large, heart-sbaped, 

 defined by an impressed line, adorned with a chestnut or livid purple 

 spot ; anterior slope veined with chestnut ; inside wholly whitish, its 

 margin entire. l...l^. Brazil. Hinge as in C. lata. 



Cytherea Hindsii (t. 15, f. 35), Hani. Z. P. 1844, p. 110.— Sow. 

 Th. 2, p. 614, t. 128, /. 27.— Trigona H. Desk. Vener. p. 53. 

 Triangular, ventricose, rather solid, smoothish, glossy, subequilateral, 

 whitish, clouded with brown, blunt at each extremity ; hinder side 

 very slightly the larger ; beaks incurved, pale ; lunule large, some- 

 what inconspicuous, wholly pale ; anterior slope streaked with brown ; 

 inside whitish, edge entire. 1...1. Guyaquil. 



Cytherea Philippinarum (t. 15, f. 36), Hani. Z. P. 1844, p. 110. 

 — Sotv. Th. 2, p. 627. — Meretrix P. Desh. Vener. p. 39. Cordate, 

 inequilateral, ventricose, thickish, variegated with narrow rays and 

 angularly flexuous lines of purplish liver-colour on a paler ground of 

 the same hue ; with crowded narrow convex ribs, whose intervals are 

 smooth ; lunule short, white, heart-shaped ; ventral edge entire, 

 arcuated ; inside whitish, with a livid spot beneath the umbones. 

 4...1. Philippines. Dorsal edge margined with livid purple. 



Cytherea plebeia (t. 15, £ 37), Hani. Z. P. 1844, p. 109.— 

 Circe p. Sow. Th. 2, p. 653, t. 138, /. 33 to 37. — Cy. Erythr^a, 

 Jonas, in Phil. N. C. teste Sow. Suborbicular, squarish, very inequi- 

 lateral, solid, slightly compressed, externally variegated with fulvous 

 on a dirty whitish ground, internally liver-coloured ; with very crowded 

 concentric sulci ; ligamental edge convex, and somewhat sloping ; 

 front dorsal edge very slightly retuse, much sloping ; ventral margin 

 arcuated, somewhat crenuJated ; umbones not flattened, devoid of di- 

 verging striae ; lunule white, lanceolate. 1 . . . 1 }. Philippines. Minute 

 tawny zigzags adorn the whitish ground of the posterior surface ; the 

 fulvous hue predominates anteriorly. 



On Artemis (p. 106). Consult the monographs by Reeve (Conch. 

 lc), Sowcrby (Th. Con.), and Deshayes (British Museum Catalogue). 



