ILLUSTRATIONS. 



(From photographs by the author.) 

 Pr-ATE III. 



Fig. S. Left lateral view of the pelvis of Cynoceplialus, natural size, and from 

 the same adult specimen which supplied the bones shown in figures 

 3 to 7. The leading vertebra shown in this figure is the last or eighth 

 lumbar vertebra. 

 9. Autero-external aspect of the left radius and ulna of Cynoceplialus; 

 slightly enlarged and from the same specimen as before, figures 3 to 8. 

 This figure shows the ligamentous attachment of the ulna to the radius. 

 The bones are somewhat pulled apart at their proximal extremities. 



10. Ventral view of the first cervical (atlas) vertebra of Cynocephalus, adult, 



natural size and from the same specimen, figures 3 to 9. This is a 

 direct view and the extremity of the bone that articulates with the 

 skull is faced toward the top of the plate. 



11. Direct left lateral aspect of the second cervical (axis) vertebra of Cyno- 



ceplialus. From the same specimen from which the other bones were 

 obtained, figures 3 to 10. 



12. Direct ventral view of the five caudal vertebrae of Cynocephalus (being 



the fourth to the eighth inclusive), natural size and from the same 

 specimen, figures 3 to 11. When articulated in the skeleton the first 

 three of these vertebrae are between the pelvic bones, the distal extremity 

 of the third being exactly opposite the posterior ischio-iliac border. 



Plate IV. 



Fig. 13. Lumbar vertebrte of Cynoceplialus, being the third to the seventh inclu- 

 sive and seen upon direct dorsal view. Slightly reduced and the same 

 bones as those shown in figure 7 of Plate II. The seventh lumbar is 

 toward the top of the plate. 



14. Direct ventral view of the pelvis of Cynoceplialus ; slightly reduced and 



the same bone as shown in figure 8 of Plate III. The vertebra in 

 front of the sacrum is the eighth lumbar. 



15. Outer aspect of the left humerus of Cynoceplialus, very slightly enlarged. 



At the distal end the supracondyloid foramen is partly in view. From 

 same specimen as before, figTires 3 to 14. 



16. Right himierus of Cynoceplialus ; direct view of posterior surface, and the 



bone very slightly enlarged. From the same skeleton from which the 

 the one in figure 15 was taken. 



Plate V. 



Fig. 17. Eight lateral view of tlie trunk skeleton of Cynoceplialus, reduced about 

 one-third. Skull removed. This is from one of the skeletons sent from 

 the Bureau of Science. Some of the dried ligaments have not been 

 removed, especially in the cervical region. Spinal column complete. 

 The skull of this specimen is shown in figure 2 of Plate I. 



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