382 THE FOSSIL ECHINOIDEA OF THE MAKRAN SERIES. 



lection, and the species is allied to S. Dussumieri, Agass. The small Temnopleuri are 

 common, and the species is nearly allied to Salmacis in its affinities, although it is 

 a true Temnopleurus. But it is an extinct form with small sutural grooves. 



The species of Clypeaster described is very common at Kharak Island and charac- 

 terizes the deposit. It is not a recent form, but is closely allied to C. placunarius, 

 Agass., and to G. subdepressus. Gray. The closed condition of the petals is interesting. 

 A Laganum is very common, and is distinguished from the living species L. depressum by 

 a remarkable tumid border. The Echinodisci are fragmentary, and one must be associ- 

 ated with E. auritus. These forms, taken with the fragmentary and unsatisfactory 

 Spatangoids, give a comparatively recent appearance to the fauna and its facies, which 

 is certainly younger than that of the Miocene deposits of Western India. 



