XIII 



PHYLUM CHORDATA 



423 



tmnsverse serrated suture, the lambdoidcd suture. The right and 

 left parietals articulate together by means of a somewhat wavy 



inl.Tan 



Jf.OC 



FIG. 1019. Lepus cuniculus. Skull. A, latertil ^*iew ; , ventral view. u,ig. proc. angular 

 process of mandible ; as. alisplieuoid (external pterygoid process) ; 6. oc. basi-occipital ; 6. ^>/<. 

 basisphenoid ; com.!, condyle ; jr. frontal ; int. pa. inter-parietal \jv.. jugal ; Icr. lacrymal ; max. 

 maxilla ; nut. nasal ; opt. jo. optic foramen ; o.sp/i. orbito-spheuoid ; pa. parietal ; ptd. palatine ; 

 pal. 'urn.'., palatine plate of maxilla ; par.oc. paroccipital process ; pal. p. ;naj:. palatine process 

 of pre-uiaxilla ; p. max. pre-rnaxilla ; peri, periotic ; pi.pteiygoid ; p. t. s^. post-tj'nipanic pro- 

 cess of squamosal ; z.oc. supra-occipital ; 57. squamusal ; t:". bv.l. tympanic bulla ; vo. vonier ; 

 ://.". //!".'. zygomatic process of maxilla. 



suture, the sagittal; in front a transverse serrated suture, the 

 coronal, connects them with the frontals. Between the supra 



