EXPLANATION 
OF 
PLATE 16. 
Fig. 1 —15. Diagrams of Muscnlus bnccinalorius of various Ungulates. 
1. Camel. 
2. — , deep, longitudinal layer. 
3. Elk. 
4. — , deep, longitudinal layer. 
5. Wapiti. 
(5. — , deep, longitudinal layer. 
7. Zebu. 
8. — , deep, longitudinal layer (intermediate). 
9. Tapir. 
10. — , deep, longitudinal layer (intermediate). 
11. — , deepest layer. 
12. Horse. 
13. — , deep, longitudinal layer (intermediate). 
14. — , deepest layer. 
15. Swine. 
Fig. 1(5. Diagram of .1/. buccinalorins of the Elephant. 
Fig. 17. — - — of the Dog. 
Fig. 18. — - — of the Hedgehog. 
Fig. 19. — — of the Rabbit (a, b, c see the text p. 15). 
Fig. 20. Orbicularis-oculi-groiip on the left side of Elephant. 
Fig. 21—27. Diagrams of Orbimlaris-oculi-group on the left side of various Ungulates, 
hor m. horizontalis, nasol m. nasolabialis, po m. postorbicularis, pr m. prseorhicularis, 
prd m. pneorbicularis dorsalis, pm m. prseorbieularis venlralis, sup m. supraorhicularis. 
21. Dromedary. Anterior part of m. nasolabialis omitted. 
22. Elk (pm t and pru 2 comp, the text p. 55). 
23. Zebu. 
24. Wapiti. 
25. Swine. M. nasolabialis (comp. PI. 9) omitted. 
2G. Horse. 
27. Tapir. 
