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PEOF. T. JBFFBRY PARKER ON THE CRANIAL OSTEOLOGY, 



Figs. 65-70. The quadrate facet on the roof of the tympanic cavity, in various Ratitae. 

 Drawn to the same absolute size. 



als., alisphenoid ; pr.o., prootic; sq., squamosal; ex.oc, exoccipital. 

 Figs. 71-76. The optic and adjacent foramina in various Ratitae. Drawn to the same 

 absolute size. 



ii, optic foramen ; iii, oculomotor foramen ; iv, pathetic foramen ; 

 vi, orbitonasal foramen ; vi, abducent foramen ; a, foramen for internal 

 ophthalmic artery. 



List of Abbeeviations. 



a.b.cr.fon. Position of anterior basicranial 

 fontanelle. 

 abd.for. Abducent foramen. 

 a.lamb.r. Anterior lambdoidal ridge. 

 al.n. Alinasal. 

 al.sph. Alisphenoid. 

 ang. Angular. 

 a.orb. Antorbital. 

 art. Articular. 



b.oc. Basioccipital. 

 b.pt.pr. Basipterygoid process. 



b.sph. Basisphenoid. 

 b.temp. Basitemporal. 

 b.temp.pl. Basitemporal platform. 



car.for. Carotid foramen. 

 cer.fos. Cerebellar fossa. 

 con.for. Condylar foramen or foramina. 



d. Dentary. 

 dor.sell. Dorsum sellse. 



eih. Ethmoid. 

 eus.gr. Eustachian groove. 

 ex.oc. Exoccipital. 



for.a. Foramen a. 

 foss.b. Fossa b. 

 fr. Frontal. 



Hard.fos. Harderian fossa. 



inf.al.eth. Inferior aliethmoid. 

 inf.orb.for. Inferior orbital foramen. 

 inf.temp.r. Inferior temporal ridge. 



ird.aud.m. Internal auditory meatus. 



ju. Jugal. 



oc.con. Occipital condyle. 

 oc.cr. Occipital crest. 

 oc.for. Oculomotor foramen. 

 olf.ch. Olfactoiy chamber. 

 op.for. Optic foramen. 



