16 TESTACEOUS MOLLU8CA. 



J). 61. — SoLECURTUs NuTTALii. Conrod in J. A. TV. S. Phil. 7. 

 Jide Gould. Linear-oval, sub-diaphanous, rounded, equally broad at 

 both ends, flat, under a glossy olive green epidermis white, rounded 

 at both ends ; nearly smooth : inside white with a strong longitu- 

 dinal rib extending from the hinge to the margin : hinge twice 

 as near the posterior as the anterior, two remote and lamellar teeth 

 in one valve, four in the other. 2.. 5. — Scmdwich Isles. ^ 



S. BiDENS*. Chem. — S. Fragilis. Mont. — D. p. 65. — 

 Turt. B. t. 8./. 3—W. t. 3./. W.—Ch. f. 1939. Linear-oval, 

 nearly smooth, pellucid, brittle, white under a yellowish cuticle, a 

 reddish brown longitudinal stripe extending half way to the margin, 

 but becoming broader and fainter as it recedes from the hinge : 

 margins sub-parallel, the ventral sub-incurved in the middle : two 

 teeth in one valve one in the other. I , . \^. — Nicobar Isles, ^'c. 



S. Tenuis. W. S. t. !./• 5. {tioi of Grif. Cuv.) Elongated 

 oblong, thin, rounded at the ends, thrice as broad as long, ventral 

 edge incurved in the middle, white under a dirty yellowish cuticle : 

 hinge, in one valve with a single projecting falcate tooth, a small 

 tooth with a denticle on each side in the other : inside uniform 

 white, without a rib, but with an oblique anterior radiating callus. 

 1..3. 



S. NovACULiNA. Beyison. Elongated-oblong, obtuse at both 

 extremities, thin, dull white under an ochraceous epidermis, nearly 

 smooth, ventral and dorsal edges sub-parallel and scarcely at all 

 arcuated : beaks slightly prominent, broad, situated at about |^rd 

 from the somewhat narrowed posterior extremity : inside glossy, 

 often irridescent, teeth very small, f ..l^-- — Near Calcutta. 



S. Californianus — CuLTELLus C. Cour. Jour. A. N. S. 

 Phil. 7. p. 233. t. 18. /. 3. Linear, oblong-oval, thinnish, convex, 

 dorsal and ventral edges parallel, the latter incurved in the middle, 

 equally rounded at the sides, under a straw-coloured cuticle with 

 radiating wrinkles on the anterior slope, white tinged with yellowish 

 brown, w/ " direct brown lines in the middle. d\ — U. California. 

 Allied to Ifjmhei. 



S. SuBTFRES. — CuLTELLus S. CoHT. Jour. A.N- S. Phil. 7. 

 p.233.i. U.f. 10. Linear-oval, inflated or sub-cylindrical ; dor- 

 sal and ventral edges sub-parallel, slightly arcuated, beaks very 

 obtuse, extremities equally rounded, under a yellowish brown finely 

 wrinkled cuticle, pale purple obscurely rayed : two teeth in each 

 valve, the anterior one of the right valve dilated. J- . . 2}. — U. Cali- 

 fornia. — Not impossibly the young of Dovibei or Californianus. 



1 The S. Minimus of Ch.f. 31. (of which we have given a copy) 

 — D. p. 66.— TF. t. Z.f. 19. — is evidently the young of a species 

 allied to this. 



