48 TERTIARY VEETEBRATA OF THE FATtM. 
Text-fig. 20. 
o., aceiabulum ; a.&., acetabular border ; c.?., crista ilii ; e.u., external angle of ilium ; is., iscbium; is.t., ischial 
tuberosity ; o.f., obturator foramen ; pubis ; sijm., symphysis. ^ nat. size. 
Text-fig. 27. 
Pelvis of Arsinoitlierium ('?)z{lleli, from right side. 
il., ilium ; other lettering as in last figure, i nat. size. 
