146 



L. glaber. Marsh. Pr. Ac. Nat. Sc, 1S72, p. 103. 



Z. Whitneyi, Marsh, loc. cit. (These species are all referred to Clastes by 

 Cope.) 



Clastes, Cope. U. S. Geol. Survey, 1872, p. 633. 

 C. anax. Cope, loc. cit. 

 C. cyliferus, Cope, loc. cit., p. 634. 



