APPENDIX. 301 



margins more arcuated ; the ligamental edge straightish and hori- 

 zontal ; the concentric lamellae more crowded, and very rough in 

 front ; the exterior with brown or ferruginous angular streaks on a 

 whitish ground ; the anterior extremity neither stained within nor 

 without. 2£. Moluccas ? It also resembles V. Listeri, but is much 

 rounder. 



Venus scabra (t. 16, f. 24), Hani. Z. P. 1844, p. 161. — -Sow. 

 Th. 2, p. 718, t. 157, /. 101, 2.— Chione s. Desk. Vener. p. 130. 

 Ovate-heart-shaped, inequilateral, somewhat ventricose, pale brown, 

 with crowded radiating costellae, which are roughened by concentric 

 scales ; ventral edge crenated, much arcuated ; dorsal edges little 

 convex, the hinder one short ; beaks acute, inclined ; lunule not 

 conspicuous ; the anterior slope not excavated ; inside livid, darker in 

 front, t-.to- Philippines. The riblets are peculiarly strong upon 

 the umbones, from whence they separate into 2 or 3 smaller ones, which 

 become, as they advance, more densely armed with the concentric rows 

 of scales. 



Venus eoborata (t. 16, f. 25), Hani. Z. P. 1844, p. 161.— Sow. 

 Th. 2, t. 157, /. 117. Triangular-heart-shaped, solid, very inequi- 

 lateral, more or less ventricose, whitish, stained inside with purple in 

 front, girt with numerous smooth blunt concentric belts, whose inter- 

 vals are likewise devoid of sculpture ; ventral edge arcuated, slightly 

 crenulated ; front dorsal edge convex, and much sloping ; lunule pro- 

 found, heart-shaped ; anterior slope smooth, excavated ; hinder side 

 with a very blunt groove radiating from the beaks to the ventral 

 corner. 1...1. Van Diemans Land. 



Venus calophylta (t. 16, f. 26). — V. thiara, Sow. G. (not Dil.J 

 —Reeve, t. 67, /. 3.— V. c. Phil. Wieg. Arc. 1836, 229, t. 8, /. 2.— 

 Sow. Th. 2, p. 172, t.. 160,/. 176.— Desk. Vener. p. 120. Obovate- 

 subtrigonal, subcordate, very inequilateral, not solid, rather com- 

 pressed, cream or pale flesh-coloured, sometimes spotted with ruddy 

 flesh-colour on the thin remote much-elevated concentric lamellae, 

 which traverse the shell, but are interrupted near both extremities 

 and absent from the shelving anterior slope and the subcordiform 

 pouting lunule; ventral edge arcuated, minutely crenulated; dorsal 

 slopes decided ; ligament very slender ; beaks recurved ; inside not 

 stained anteriorly. If... If. China; Australia. 



Venus gallina (t. 16, f. 42), Li?i. Sys. ed. 10.— Ch.f. 308, 9, 0.— 

 Phil. 1, p. U.—Sow. Th. 2, p. 734, t. 161, /. 202, 3.— Chione g. 

 Desh. Vener. p. 143. Obovate-heart-shaped, inequilateral, solid, 

 ventricose, closely painted with minute angular lines of livid or rufous 

 brown on a whitish ground, and usually adorned with 3 rays of the 

 same tint, or more rarely of pure white ; surface coarsely closely and 

 unsymmetrically grooved concentrically, the raised intervals often 



2 F 



