Plate XLII. 

 Nyctosaurus gracilis. 



Fig. i. Sternum, from below. Three-fifths natural size. 

 Fig. 2. Left radius, ulna, and carpus, from inner side, the carpus somewhat 

 displaced: a, radius; b, ulna; c, proximal carpal; d, distal carpal. 

 Fig. 3. Right lateral carpal or first metacarpal. 

 Fig. 4. Right pteroid bone, from in front. 

 Fig. 5. Right pteroid, from behind. 

 Fig. 6. Small metacarpal. Twice natural size. 

 Fig. 7. Left humerus, from within. 

 All the figures, except as stated, natural size. 



