GUPPY SHELLS OF TFJNIADD. 367 



sive sutural lamellae ; anterior canal open and a little reflect- 

 ed. Pillar lip smooth, flattened or hollowed out, bright pink ; 

 outer lip denticulate, obsoletely striate within. Height 40 

 millimetres, greatest breadth 27 mill., longest diameter of 

 aperture 26 mill. 



A species somewhat resembling P. mancinclla, but with 

 a sharper spire and a more decided striation. The sutural 

 lamellae are well developed like those of P. coronal a. There 

 i strong ridge round the base. Gulf of Paria. 



Cardium eburniferum n. sp. 



Shell a little angularly suboval, moderately tumid : exter- 

 nally marked with irregular orange-brown spots, and adorned 

 with 35 narrow imbricated ribs closely covered towards the 

 margins of the shell with numerous porcellanous semitubular 

 tubercles, which are thicker anteriorly ; posterior edge nearly 



straight, strongly serrate. Hinge-teeth -, -, , strong. 



Interior salmon-color, growing white towards the strongly 

 dentrate margins which are yellowish. Height 52 mill., 

 length 45, thickness 40. South Coast of Trinidad (T. W. 

 Carr). 



Cardium haitense Sowerby. 



Quart. Journ. Geol. Soc. vol. vi, p. 52, pi. x, f. 11. 



An oblique subovate shell with 20 24 radiating nodose 

 rather square ribs wider than their finely crenate interstices. 

 Allied to C. subovale Brod. 



This was originally described by Sowerby as a fossil from 

 Haiti, but I have dredged two small examples of it in the 

 Gulf of Paria. 



