PLATE 21 



Figs. I, la, lb. MachcBrognathus woodward i, n. g., n. sp. Type. Right man- 

 dible, lacking posterior extremity, X |. E 1935, p. 83. 



I, outer view; la, inner view; ib, as it appears resting on the outer face, to 

 show sigmoidal curvature, antero-posteriorly. 



Fig. 2. Stcnognathns insignis, n. sp. Type. Right mandible, in outer view. 

 X| E 1932, p. 73. 



240 



