LIST OF ILLUSTRATIONS IN THE TEXT. 
Fig. 
Page 
1. 
Ars'uioitherium 
zitteli : 
skull, seen from behind . 
3 
o 
33 
skull, oblique view of anterior portion, showing the relation of 
the nasal and maxilla to the narial opening 
8 
3. 
33 
skull, diagrammatic section 
through snout 
at the level of the 
third premolar . 
11 
4. 
33 
skull, side view of orbital 
region with the zygomatic arch 
removed 
13 
5. 
19 
cast of cranial cavity 
IG 
0. 
11 
andrewsi : semi-diagrammatic figure of the u])])er 
and lower teeth of 
the left side 
18 
7. 
33 
zitteli : 
semi-diagrammatic figure of the upper milk 
-molars .... 
21 
8. 
11 
11 
atlas vertebra 
25 
• y. 
39 
33 
axis vertebra 
2G 
10. 
39 
31 
cervical vertebrae 
28 
11. 
11 
11 
anterior thoracic vertebra . 
29 
12. 
11 
11 
middle thoracic vertebra 
29 
13. 
31 
11 
posterior thoracic \'ertebra . 
30 
14. 
11 
11 
(?) sacral vertebra 
31 
1.5. 
11 
11 
left scapula 
33 
IG. 
33 
11 
left humerus 
35 
17. 
13 
11 
left radius 
3(i 
18. 
11 
19 
left ulna 
38 
19. 
11 
11 
left forearm and manus. . 
40 
20. 
11 
11 
left scaphoid 
41 
21. 
11 
11 
right lunar 
42 
22. 
11 
11 
left cuneiform and pisiform 
44 
23. 
33 
11 
left magnum 
45 
24. 
11 
11 
left unciform 
4G 
25. 
13 
11 
fifth left metacarpal . 
47 
2G. 
(?) 
33 
pelvis from back .... 
48 
27. 
33 
11 » 
pelvis from side .... 
48 
28. 
11 
11 
right femur 
. .... 
50 
29. 
31 
31 
right })atella 
51 
30. 
13 
31 
right tibia 
52 
