Fig. 77. Mvrychippus isoncsus Cope. (Three right-hand figures) Amer. Mus. 8175, hind feet of the type, (a) anterior, 

 (h) internal, and (c) external views, with section of metatarsals; (two left-hand figures) manus of Amer. Mus. 8174a, a 

 referred specimen, (b) internal, and (a) anterior views, with section of metacarpals. All figures one-half natural size. 



