50 



THE SKELETON OF THE CAT. 



(g) curving out some distance laterally. The following bones 

 are visible in dorsal view: the occipital (i), interparietal (2), 

 parietals (s), temporals (4), frontals (5), malar or zygomatic 



Fig. 39.— Skull, Dorsal Surface. 

 I, occipital bone; 2, interparietal bone; 3, parietal bones; 4, temporal; 5, frontal; 

 6, malar; 7, nasal; 8, maxillary; 9, premaxillary; 10, lachrymal, a, lambdoidal 

 ridge; b, external occipital tubercle; c, sagittal crest; </, parietal eminence; f, line 

 which forms the dorsal boundary of the temporal fossa; f, zygomatic process of the 

 frontal; g^ zygomatic arch; /;, frontal process of the malar; i, supraorbital arch;/, 

 iiares; k, foramen incisivum or anterior palatine foramen; /, si)henopalatine foramen; 

 f>i, zygomatic process of the temjioral; ;/, infraorbital foramen; o, opening of lach- 

 rymal duct. 



bones (6), nasals (7), maxiUaries (8), premaxillaries (9), and 

 lachrymals (lo). 



The caudal boundary of the dorsal surface is marked by the 

 prominent lambdoidal ridge {a) which passes from the middle 

 cranioventrad along each side to the root of the zygomatic 

 arch: it is borne by the occipital and temporal bones. From 

 the middle of the lambdoidal ridge a second ridge, the sagittal 



