Plate XXII. 



Figure 1. — Left carpus of Pteranodon sp., No. 2425; palmar surface, x 0.64 



Figure 2. — The same specimen ; dorsal surface, x 0.58 



Figure 3. — Distal ends of metacarpals II, III, and IV, of Pteranodon sp., No. 2493, with 

 three nearly complete digits of the right manus, the number and order of the 

 phalanges in two of these digits being incorrectly preserved, x 0.78 



Figure 4. — Right carpus of Pteranodon sp., No. 2683, with the proximal end of meta- 

 carpal V ; palmar view, x 0.82 



Figure 5. — The same carpus removed from the matrix ; dorsal view, x 0.82 



