30 TESTACEOUS MOLLUSCA. 



purplish : within, with three purple spots on the dorsal edge. Ih. — 

 China ? 



M. NiTiDA. Schroeter, vol. 3. /. 8./. 2.—D. j). 136. — fF. t. 6. 



f. 13. — M. Straminea. Lain. 9. Triangularly ovate, smooth, 



shining, diaphanous, white scarcely if at all rayed ; beaks ohsoletely 



rufous: ligament external, in an oblique triangular groove. Ig. — 



Cape of Good Hope. 



M. Glabrata. Lin. 1125.— J>. p. 136.— TF. t. 6. /. 12.— M. 

 AusTRALis Lorn, 10. — Ck. J". 216, 7. Triangular, thickish, 

 diaphanous, glabrous, finely striated transversely, tawny white : 

 umbones very smooth ; interior with two or three purple stains. 

 2| . .3. — Neiv Holland. 



M. VioLACEA. G7nel. no. 18.— Z). p. 135.— ia?/i. 11.— C/t. f. 

 213, ^.—E. t. 254./. 1.— W. t. 6.f. 9. Triangularly ovate, sub- 

 equilateral, thin, diaphanous, nearly smooth, violet within and 

 without, but darker at the beaks and paler on the depressions of 

 which the anterior is lanceolate, the posterior oblong, anterior lateral 

 tooth short and approximate. 2^.. 3. — Tranquehar. 



M. Fasciata. Lam.\2. Gnalt.Jl. B. (tolerable) Triangular, 

 ventricose, thin, smooth, subdiaphanous, white with distant violet 

 zones ; anterior slope striated and very pale ; violet within ; variety ; 

 with pale fulvous rays. — Atlantic? 



M. TuRGiDA. Gmel. 3260.— D. p. l^A.—Lani. 12,.— Ch. f. 

 210, 212.— j^. t. 255./. Z.-—W. t. 6./ 8. Triangularly ovate, ven- 

 tricose, thin, smooth, pellucid, pale ochraceous, finely striated, 

 transversely and wrinkled at both ends ; umbones incurved and 

 pale reddish purple ; within, white with a large purple stain under 

 the hinge. 2..2|-. — Tranquehar. 



M. Plicataria. Lin. 1\25.— D. p. 132.— Lam. 14.— Ch. f. 

 202, 3, 4.— M. SuBPLicATA. W. S. /. 6. Oblong, thin, dia- 

 phanous, pale dull brownish-white, strongly plaited transversely 

 both inside and out ; hinge much nearer the anterior than the 

 posterior extremity, both depressions flattened, the oblong posterior 

 the most so. If ..21^. — Indian Ocean. 



M. RuFESCENS. Lam. 15. Triangularly ovate, sub-equilateral, 

 solid, rather tumid, reddish fulvous, slopes striated, smooth near the 

 beaks w^hich are approximate, but with coarse plait-like striae to- 

 wards the ventral margin, which is much arcuated but anteriorly 

 incurved slightly ; inside opaque white, the teeth strong, the V- 

 shaped one large, the lateral smooth, moderately distant, sub-equal. 

 1|..2. — New Holland. 



M. Maculata. Om. 3260.— i). p. 134.— Lam. 16.— Ch. f. 

 208, 9.— E. t. 254. / 3.— TF. t. 6. /. 7. Obtusely triangular, 

 slightly angulated at the anterior and rounded at the posterior 

 depressed extremity, inflated, thin, white, with scattered reddish 

 chesnut spots. 1 f . . 2^ . — Nicobar Isles. 



