296 



ZOOLOGY 



SECT. 



floor of the most posterior portion of the cranial cavity ; posteriorly 

 it bears a rounded prominence, the occipital condyle (pc. cond). 



Irons 



p.mzx: 



^ e act nar 



a|rr> V* ^ 



rfi^x *-4^^^ 



x max \ 



?\ /^- /: C 7- 



bas.oc JU elh 



' p lj col* tran8 



dent. 



. 907. Skull of Lacerta agrilis. A, from above; B, from below; 0, ifrom the side. 

 any. angular ; art. articular ; has. oc. basi-occipital ; bas. ptg. basi-pterygoid processes ; has. 

 sph. basi-sphenoid ; col. epi-pterygoid ; cor. coronary ; dent, dentary ; etk. ethmoid ; ex. oc. ex- 

 occipital; cxt. nar. external nares ; for. mag. foramen magnum ;//. frontal ; int. nar. internal 

 nares ; ju. jugal ; Icr. lacrymal ; max. maxilla ; nas. nasal ; oc. cond. occipital condyle ; olf. 

 olfactory capsule ; op. ot. opisthotic ; opt. n. optic nerve ; y>al. palatine ; par. parietal ; para. 

 parasphenoid ; par. f. parietal foramen ; p. mx. pre-maxillfe ; pr. Jr. pre-frontal ; ptg. 

 pterygoid ; pt. orb. post orbital ; qu. quadrate ; s. ang. supra-angular ; s. orb. supra-orbitals ; 

 sq. squamosal ; supra t l . supra-temporal 1 ; supra t-. supra-temporal 2 ; trans, transverse ; 

 supra, oc. supra-occipital ; vom. vomer. (After W. K. Parker.) 



In front of it, forming the middle portion of the floor of the cranial 

 cavity, is the basi-sphenoid (bas. sph\ not represented in the Frog, 

 in front of which again is a membrane bone, the parasphenoid 



