No. 475] OCCIPITAL CONDYLES IN MAMMALIA 



481 



bv the ventral portion of the atlas coming in contact with the 

 median condyle or with the anterior prolontjation of the lateral 

 condyles, and, since strong ligaments prevent anv dorso-ventral 

 motion between the atlas anti the axis, anv further straui in this 

 direction will be thrown back upon the other cervical \crtebrie, 

 where the processes and muscles are stroiiiivr aii.l tlicrr i> no dan- 

 ger of dislocation. The anterior prolon nation ot the lateral con- 

 dyles occurs only in the more stnctiv cannvorous tonn-. The 



sho^^n in the Musteli(he (Fio. J I (, .ii.l 7 Ih. liKtil..,,,- 



and these, together with the Mus- 



