PI.ATE ix. 

 TRIFACIAI, NEUROTOMY. 



LL, Levator labii superioris proprii displaced 

 ventralwards toward inferior maxilla. It origin- 

 ally rested at end of dotted line from IOF ; IOF, 

 infra-orbital foramen ; NF, superior maxillary 

 division of the trifacial nerve. 



