Guppy Reprint 



69 



Page S 5 



Monodonta basilea n. sp. PI. I, f. 2* 



Top-shaped, umbilicate. Apex smooth, sharp. Whorls 

 about 7, very strongly carinate, the stout keel on the 

 angular ridge bearing a row of rounded undulate tubercles 

 and having near the suture a less distinctly marked keel, 

 between which and the keel on the angle there is a slight 

 concavity marked only b}^ faint spiral ridges crossed by 

 lines of growth. Lower half of last whorl forming the base 

 covered with strong spiral ridges. Mouth subcircular. 

 Columellar lip callous, produced into a broad tooth above 

 a short broad rather effuse canal. Outer lip dentate, 

 grooved within. Total length about 1 5, greatest breadth 

 about 12 millimetres. 



In general characters there is some resemblance between 

 this .shell and Trochus cypris Orb. {—Monodonta elegans 

 Bast.) 



Neaera costellata Desh. 

 Corbula vieta Guppy. 

 Journ. Geol. Soc. vol. xxii, p. 580, pi. xxvi, f. 8. 

 Venus bl andiana n. sp. 

 Suborbicular, subequilateral, moderately convex, adorned 

 with numerous equidistant concentric lamellae, between 

 each of which there are about 7 or 8 concentric striae : 

 somewhat angulate in front and subtruncate behind : 

 margins crenate. Lunule smooth, impressed. Posterior 

 dorsal area not defined, striate continuously with the 

 lamellae of the disk. Umbones small. Cardinal teeth 2 

 under the lunule ; lateral tooth 1 nearly halfway down 

 the posterior slope. 



Referred to hitherto in papers on Westindian fossils as 

 Ve?ius rugosa var. , to young specimens of which species it 

 bears a somewhat close resemblance. The Jamaican ex- 



[*Geological Magazine, vol. 11, 1874, pi. 16]. 



