M 



/ 



surpasses the mastoid process, ami is prolong, d t<> tin- ma-t..id prtnlx-nin>-.'. Tl,. i.ai. r 



. voluminous. The Miliiilit'onii process in larger and stronger than in tin II 

 and tin iv is in> mastoid ti--un-. 



In the Shtf)> ami GVi/, the mastoid process is scarcely distinct fn-m tin- <-n si ; and 

 tin- nuutoid portion of the lx>n< is only at a late period cons<>liiliit< d with tin- p. i>..u- 



Fig. -".'. 



OX'S HEAD; POSTERIOK FACE. 



A, Parietal bone. 1, Occipital foramen; 2, Occipital condyle; 3, Styloid pr.< 

 of that bone ; 4, Condyloid foramina ; 5, Mastoid process ; 6, Mastoid protuber- 

 ance; 7, Subuliform (temporal) process; 8, Hyoideal sheath; 9, Stylo-ni;i-tc,i<l 

 foramen; 10, External auditt ';, limtus-, 11, IntVrior orifice of the parieto-trm- 

 poral canal; 12, Temporal condyle; 13, Posterior foramen lacerum ; 14, <>\;il 

 foramen; 17, Subsphenoidal process; 18, Orbital hiatus; 19, Optic foramen. 

 B, Frontal bone. 20, Superciliary foramen; 21, Orbital foramen; 22, Lachrymal 

 protuberance. c, Zygoma. 23, Pterygoid bone. D, Palate bone. 24, Nasal fora- 

 men ; 25, Inferior orifice of the palatine canal. E, Supermaxillary bone. 26, 

 Maxillary spine. o, Premaxillary bone. 27, Its internal process ; 28, External 

 process ; 29, Incisive openings. 



7. SupermaxiUary bone. In the Ox, Simp, and <:<tt, the maxillary *j>ine does not 

 directly join the zygomatic crest; a curved line, whow c.nir;ivity is posterior, (fleets the 

 union between these two parts. The Eofefkr orifioe of ihe supermaxillo-denta] ennui 

 or infraorbital foramen is pierced above the first molar tooth. There is no li-.Min fur 

 the formation of the palatine canal. Tin- <-;mty of the sinus is nmre .-pari'iins th:m in 

 the Horse, and is prolonged (in the Ox only) betwi in tin i\\i lamiiue i.f tin- jialatinc 

 roof. Tin n is no alvt olus for the tu-k. 



8. I'remaxiUnrylxmf. The inferior or prim i pa I portion of this bone i.- llatti n d IM I..K 



