44 PROCEEDINGS OP THE GEOLOGICAL SOCIETY. 



17. PsoDucTus STEiATus, Fisclier ? 



Mytilus striatus, Fischer, Oryct.du GouY.cIe Moscow, p. 181, pl.xix. 

 fig. 4. - 



A fragment, having much the appearance of having belonged to 

 this well-known species, was found at Barus, in the Yalley of Kash- 

 mere, but the specimen was not sufficiently complete to warrant a 

 certain identification. The shell is not rare in the Punjab. 



18. Peodiictus spinulostjs ?, Sow. PL II. fig. 15. 



Two specimens, bearing much resemblance to some of our European 

 examples, were obtained from the grey limestone of Khoonmoo. The 

 shell is small, transversely semicircular ; the ventral valve regularly 

 convex, without sinus ; surface covered with numerous subregular 

 small tubercles, somewhat quincuncially arranged (each tubercle 

 having given rise in the perfect shell to a slender spine) ; the con- 

 centric wrinkles are also slightly marked, and on one specimen 

 somewhat as we find to be the case in P. Keyserlingiana, or even P. 

 Deshayesiana, De Koninck, to which these Kashmere shells bear 

 some resemblance. 



19. PnontrcTus l^vis, spec. nov. PI. II. fig. 16. 



Shell small, nearly circular ; hinge-line slightly shorter than the 

 greatest width of the shell ; ventral valve evenly convex ; ears small ; 

 surface smooth ? Length 3 hues, the width slightly exceeding that 

 of the length. 



Of this small species a single ventral valve has been discovered, 

 but it was so distinct, both by its shape and surface, from other known 

 species of the genus that I have ventured to apply to it a distinc- 

 tive designation. It occurs in a coarse limestone in the Zewan beds, 

 Yalley of Kashmere, but less compact and of a lighter grey than the 

 bed from which most of the species found at Khoonmoo were 

 obtained. 



20. Peoductus, sp. ? 



A fragment of internal cast indicates the presence of another species, 

 but not specifically determinable from the material in our possession. 

 Barus. 



21. Chonetes l^vis, spec. nov. PI. II. fig. 17. 



Shell marginally semicircular, concavo-convex ; hinge-line straight, 

 about as wide as the mdth of the shell ; each valve is provided with 

 a subparallel area, which is widest in the ventral valve ; ventral 

 valve moderately convex, flattened towards the ears ; surface smooth ? 

 Length 4, width 6 lines. Of this CJionetes two or three more or less 

 complete specimens occur on a fragment of limestone from Barus, in 

 the Yalley of Kashmere. 



22. Chonetes ? AusTENiANA, spec. nov. PL II. fig. 18. 



Shell marginally transversely semicircular ; hinge-line straight, as 

 wide as the shell ; ventral valve moderately convex, with a narrow 



