1901.] 



THi] MtSOLES OF CtHE tJNGL'LA'rA. 



671 



ceratobyal, to the front of the epiglottis. It is present iu the 

 Tragulidte and Bovidaj and possibly in other families. 



Sta-no-hyoid. — In the Hippopotamus the steriio-hyoid rises as 

 usual from the deep surface of the manubrium sterni in its 

 anterior part, and j'uus forwards to be closely connected with the 

 cephalo-humeralis, so that Cuvier (XXXIII.) describes it as part 

 of the " deltoido trapeze " ; it can, however, be traced forward, 

 and it is then found to divide into two layers, of which the more 

 superficial coutinues forward to near the symphysis of the 

 mandible, and is sometimes called mento-hyal, while the deeper 

 layer is inserted into the basibyal. 



Text-fig. 89. 



Hyoid apparatus of the Duiker-bok. 



1. Hyoideus latus. 



2. Stylo-liyal bone. 



3. Epi-hyal bone. 



4. Cerato-byal bone. 



5. Tbjro-hyal bone. 



In the Huidte (4, 6, 7, 11, 12, 13, 14) the muscle is very well 

 developed ; and in our specimens it was supplied by the ansa 

 cervicis as in Man. 



In the Tragnlidse (21) the two muscles of opposite sides are 

 closely connected, and they are also fused with the sterno- 

 thyroids in the posterior part of the neck (20). 



Among the Cervidse the muscle is yery slight in the Deer (25) 

 and Brocket (28). 



In the Giraffidie the muscles of opposite sides are fused near 



44* 



