5 



THE SKELETON OF THE CAT. 



curving out some distance laterally. The following bones 

 are visible in dorsal view: the occipital (1), interparietal (2), 

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



W 



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; d, parietal eminence; e, line 

 which forms the dorsal boundary of the temporal fossa; _/", zygomatic process of the 

 frontal; g t zygomatic arch; 7z, frontal process of the malar; i, supraorbital arch;/, 

 nares; k, foramen incisivum or anterior palatine foramen; /, sphenopalatine foramen; 

 i, zygomatic process of the temporal; n, infraorbital foramen; o, opening f lach- 

 rymal duct. 



bones (e), nasals (?), maxillaries (s), premaxillaries (9), and 

 lachrymals (10). 



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 



