1840.] 



On the Geology of Cutch. 



361 



the largest individual 10 lines, thickness nearly five lines. A remarkably 

 thick species. 

 Loc. Wag6-ke>pudda. 



Lycophris Ephippium. Orbicular, depressed, curved so as to resemble 

 a saddle, with a gently elevated umbo on each side ; margin thick, obtuse, 

 ■with a narrow waved keel in the middle ; grains on the surface small and 

 e-qual. Diameter 1| inch, thickness 3 lines. 



Lycophris dispansus. Lenticular, thick, with a very thin, expanded, 

 sharp-edged margin ; grains on the surface largest in the centre of the 

 disk. Diameter | an inch. 



These two fossils may possibly be different stages of growth of the 

 same species ; for there occur along with them many curved plates 

 which are intermediate in form. The grains on the surface are the pro- 

 jecting extremities of internal columns, not merely granulations in the 

 substance of the fossil, as in some species of Nummularia. The inter- 

 nal structure is totally different from that of Nummularia, as it is only 

 on the inner surfaces of the two plates that any appearance of a spiral 

 or concentric series of cells can be traced. In p. 321 these fossils are 

 assigned to the genus Orbitolites. 



Loc. Both species very abundant at Baboa Hill and Wage-ke-pudda. 



Fasciolites (Parkinson) elUptica. Elliptical with blunt extreniitiesj 

 ba,nds curved. Length lines, diameter 3 lines. 



Several species of this genus occur in the tertiary formations of 

 Europe, but they are longer in proportion to their thickness. 



Loc. Wage-ke-pudda and Baboa Hill. 



Echinus duhius. Orbicular, depressed; areae granulated, concave, 

 and nearly free from grains along the middle ; the larger furnished with 

 two rows of tubercles near each side ; the lesser with one row on each 

 side; pores of the ambulacra in numerous, arched rows. Diameter 

 about 3 inches, height about 1| inch. 



This has apparently imperfect tubercles, and is much longer than 

 Cidarites variolaris^ Brongn., which however it much resembles. 

 Loc. Baboa Hill and Wage-ke pudda. 



Galerites pulvinatjis. Orbicular, depressed, spheroidal, covered with 

 minute tubercles. Ambulacra obscure beneath, crossed by grooves 

 above. Diameter 3| inches, height 1 inch 10 lines. 



A species much like G. depressus, Lam., but more convex and ten 

 times the size of it. 



Loc. Baboa Hill. 



Clypeaster affinis. (Goldfuss, p. 134. t. 43, f. 6.) ? Our specimen 

 appears to be more orbicular than the C. affinis of Goldfuss, but it is too 



