PLATE II. 



Kg. Page 



1. Arsinoitherium zitteli, Beadnell ; skull, palatal and (1 a) front views ; the 

 ends of the horns have been restored : one-third nat. size. Fluvio-marine 

 beds (Upper Eocene). [M. 8463.J 2 



a.o.f., antorbital foramen. 

 a.p.f,, anterior palatine foramen. 

 to., basioccipital. 

 hsp., basisphenoid. 

 c, canine alveolus. 

 e.a.m., external auditory meatus. 

 exo., exoecipital. 

 f.Ji., frontal liorn. 

 gl., articular surface for mandible. 

 {. 1-3, incisors or their alveoli. 

 m. 1-3, molars. 



mes., prenasal bar. 

 m.p.f., maxillo-palatine foramen. 



mx., maxilla. 

 na., nasals. 

 nar., external nares. 

 n.h., nasal horn. 

 orh., orbit. 



pgl; postglenoid process. 

 pi., palatine. 

 pm. 1-4, premolars or their alveoli. 

 pmx., premaxilla. 

 pp.f., posterior palatine foramen. 



pt., pterygoid. 

 pti/., post-tympanic process. 



