PLATE XX. 
’’ig- Page 
L Eoslroi lihycn, Andrews; skull, side view, (1 a) palate, (1 b) exoccipitals : 
one-third nat. size. Qasr-el-Sagha beds (Middle Eocene). 
[Type specimen, C. 10054.] 11)8 
'1. Ditto; mandible, side and ("3 a) ventral views: one-third nat. size. Same 
horizon. [C. 10040.1 200 
3. Ditto ; left scapula, onter view : one-third nat. size. Same horizon. 
[C. 10191.] 213 
4. (?) Ditto ; lumbar vertebra, front view : one-third nat. size. Same horizon 
I C. 10190.] 212 
5. Ditto; caudal vertebra, front view : one-third nat. size. Same horizon. 
[C. 10190.] 213 
G. Ditto ; sacral vertebra, posterior view : one-third nat. size. Same horizon 
[C. 10190.] 212 
7. Ditto ; left humerus wanting ])roximal epiphyses, front view : one-third nat. 
size. Same horizon. [M. 9238.] 213 
8. Zevyloilon os'/rhs, Dames ; imperfect skull, upper and (8 a) posterior views : 
one-fourtli nat. size. Same horizon. [C. 10018.] 237 
a.p.f., anterior palatine foramen. 
fi.z., prezygapophyses. 
h. r/., bicipital groove. 
(•., canine. 
C.A., coracoid border. 
conJ., occipital condyle. 
cor., coracoid process, 
deltoid crest. 
e. vO; exoccipitals. 
f. m., foramen magnum. 
fr., frontals. 
fjL, glenoid cavity of scapula. 
(j.l., greater (outer) tuberosity. 
i. 1-B, incisors. 
i. c., inner condyle. 
I.C., lambdoidal crest. 
l.t., lesser (inner) tuberosity. 
m.f., mental foramen. 
«?.r., maxilla. 
'tHi., nasals. 
nar., external nai'es. 
pa., parietals. 
pin. 1-2, premolars. 
pm.w, premaxilla. 
S.C., sagittal crest. 
.soc., supraocci])ital. 
sp. , spine of scapula. 
sq. , squamosal. 
s.r., sacral rib. 
sym., symphysis of mandible. 
tr., distal articulation of bumerus, 
zyij., zygomatic process. 
