168 



ANATOMY OF THE RABBIT 



from the occipital condyle by a pronounced notch, the posterior 

 boundary of a deep narrow excavation, the jugular fossa (fossa 

 jugularis), which lies between the condyle and the tympanic 

 bulla. The jugular process serves for the attachment of muscles 

 belonging to the tongue, hyoid, and mandible, namely, the stylo- 

 glossus, stylohyoids major and minor, and the digastricus, the 

 suspensory ligament of the lesser cornu of the hyoid also being 



p.s.a. 



Fig. 85. Lateral surface of the skull: .AS, alisphenoid (ala magna); 

 BO. basioccipital (basilar portion of occipital); BS, basisphenoid (body of 

 posterior sphenoid); F, frontal; I, interparietal; L, lacrimal; M, maxilla; MS, 

 mastoid portion of petrosal (petromastoid) ; N, nasal; OS, orbitosphenoid (ala 

 parva) ; P, parietal; PL, palatine; PM, premaxilla; SO, supraoccipital 

 (squamous portion of occipital); SQ, squamosal; T, tympanic; ZY, zygomatic, 

 a.p., piriform aperture of nose; d.i., incisor teeth; d.m., molars; d.pm., 

 premolars; f.i., infraorbital foramen; f.mx., maxillary fossa; f.o., optic 

 foramen; f.s., stylomastoid foramen; f.t., temporal fossa; 1.1., lateral lamina of 

 pterygoid process; l.m., medial lamina; m.a.e., osseous portion of external 

 acoustic meatus; p. a., alveolar process of maxilla; p.e., ethmoidal portion of 

 orbitosphenoid; p.f., frontal process of premaxilla; p.j., jugular process of 

 occipital; p.m., mastoid process of mastoid; p.mx., maxillary process of 

 frontal; p.o., orbital process of maxilla; p.o.e., external occipital protuberance; 

 p.s., squamosal process of parietal; p.s.a. and p.s.p., anterior and posterior 

 supraorbital processes of frontal; p.z., zygomatic process of squamosal; p.z.m., 

 zygomatic process of maxilla; s, sphenoorbital process of maxilla; s.m., spina 

 masseterica; sq., squamosal process of squamosal. 



included in the ligament of the stylohyoideus minor. The nuchal 

 surface is separated from the dorsal surface of the skull by a shield- 

 shaped promontory and crest (crista nuchae). The lateral con- 

 tinuation of this crest is the superior nuchal line (linea nuchae 

 superior). It forms a curved ridge, the position of which indicates 

 the dorsal limit of the occipital musculature. The posterior, some- 

 what tri-radiate tip of the projection, together with a thin ridge 

 extending ventrad from it, is the external occipital protuberance 



