Lepidosteus. _L. atrox_, Leidy. Pr. Ac. Nat. Sc., 1873, p. 97;
Cont. to Ext. Vert. Faun., p. 189.
_L. simplex_, Leidy. Pr. Ac. Nat. Sc., 1873, p. 98; Cont. to Ext.
Vert. Faun , p. 191.
_L. notabilis_, Leidy, loc. cit.
_L. glaber_, Marsh. Pr. Ac. Nat. Sc., 1872, p. 103.
_L. 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.
* * * * *