m2 



MESSES. B. 0. A. WINDLE AND F. G. PARSONS ON [DeC. 17, 



Cervidse, and Suidse the so-called levator labii superioris proprius 

 rises with and just above these, and its tendon ends also in the 

 nostril. These muscles are very constant, as might be expected 

 when one remembers how regularly they are found throughout 

 the Mammalia \ 



Text-fig. 86. 



Facial muscles of the Duiker-bok. 



1. Levator labii superioris and Dila- 



tores naris (Naso-maxillaris). 



2. Zygomaticus. 



3. Orbicularis oris. 



4. Depressor labii inferioris. 



5. Depression for suborbital gland. 



6. Orbicularis palpebrarum. 



7. Triangularis frontis. 



8. Attrabens aurem anterior. 



9. ,, ,, superior. 



10. „ ,, inferior. 



11. Parotido-auricularis. 



12. Masseter. 



13. Sterno-massetericus. 



14. Parotid gland. 



LacJirymalis. — A small fan-shaped muscle rising from the 

 anterior or interual margin of the orbicularis palpebrarum, of 

 which it is probably a detached portion ; the fibres run down and 

 spread out over the face. It is best seen in the Bovidae (Ox, 

 Sheep, Mouflon), and is small or absent in the Equidse, Tapiridse, 

 and Suidae (see text-figs. 86 and 87). 



Triangularis frontis. — A. small fan-shaped muscle which we have 



^ A description of tbe musculature of the trunk will be found in Watson's 

 paper on tbe Elephant (XXX.) and in Murie's on the Tapir (XVII.), 



