154 



SKELETON OF THE DOG 



Cranium 

 The occipital bone is similar in position to that of the horse. The crest is 

 prominent, angular, and directed backward. Just below the crest are two rough 



^rtf^ 



Fin. 122. — Base of Sktili^ of Dog, without M.\ndible. 

 /, Occipital; //, tympanic part of temporal; Ila, squamou.s jiart of tempf)ral; Ilh, mastoid part of tem- 

 poral; ///, sphenoid; IV , ijterjgoid; T, i)alate hone; VI, vomer; 1'//, malar; VIII, zjgomatic arch; IX, inner 

 wall of orbit; A', palatine ijrocess of maxilla; XI, i)iemaxilla; XII, orbital cavity; 1, 1, tubercles above foramen 

 magnum; 2, foramen magnum; 3, occipital condyle; 4< notch between occipital condyles; 5, condyloid fossa; 

 6, hypoglossal foramen; 7, paramastoid (styloid, jugular) process; S, for. lacerum and posterior opening of carotiil 

 canal; 9, petro-occijiital synchondroses; 10, petro-tympanic fissure; II, tubercle; 12, bulla ossea; 13, muscular 

 process of petrous; 14, carotid foramen; 16, osseous Eustachian tube; 16, postglenoid process; 17, glenoid 

 cavity; 18, for. ovale; 19, posterior opening of alar canal; SO, external opening of parieto-temporal canal; SI. 

 stylomastoid foramen; S3, external auditory meatus; 33, temporal crest; 34, zygomatic process of temporal 

 bone; 35, body of postsphenoid; 36, body of presjjhenoid; 27, anterior opening of alar canal; 28, for. lacerum 

 orbitale; 39, optic foramen; 30, hamulus of pterygoid; 31, horizontal part of palate bone; S3, perpendicular 

 part of palate bone; 33, median palatine suture; 34, palato-maxillary suture; 35, posterior nasal spine; 36. 

 anterior palatine foramen; 37, palatine groove; 3S, alveolar border of maxilla; 39, palatine process of maxilla; 

 40, pterygoid jirocess of maxilla; 41 , palatine fissure; 43, body of i)remaxilla; 43, ))alatine process of premaxilla; 

 44, alveolar border of premaxilla; 45, suiiraorbital process of frontal lione, {I-Mlenborger-Haum, Anat. d. Ilundes.) 



imprints or tubercles for muscular attachment. The surface below these is convex 

 from side to side and concave from above downward. On either side, at the junction 



