ri.ATE I. 
Fig. Page 
1. Avsinoitheyium zitfeli, Beacliiell; skull, left lateral view; the ends of the 
horns have been restored : one-third nat. size. Flnvio-marine beds 
(Upper Eocene). [M. 8463.] 2 
ao.f., antorbital foramen. 
h.v., h.v.', impressions of blood-vessels, 
c., alveolus of canine. 
e. a.in., external auditory meatus. 
exo., exoccipital. 
/./(., frontal horn. 
f. l.a., foramen lacerum antei'ius. 
fr., frontal. 
i. 1-3, incisors or their alveoli. 
>., jugal. 
1., lachrymal. 
m. 1-3, molars. 
mes., prenasal bar. 
7/1.1’., maxilla. 
//«., nasal. 
nar., external nares. 
n.li., nasal horn. 
cn.f., orbito-nasal foramen, 
j/rt., parietal. 
jxjl., postglenoid process. 
pi., palatine. 
1-4, premolars or their alveoli. 
pmx., premaxilla. 
p)-P; paroccij)ital process. 
pt., pterygoid, 
y/ty., ]30st-tympanic jirocess. 
sq., squamosal. 
st.v., supratemporal ridge. 
II., optic foramen. 
