PLATE XI. 



Fig. Page 



1. Mceritherium lyonsi, Andrews ; atlas vertebra, posterior, (1 a) anterior, and 



(1b) Tipper views: one-third nat. size. Qasr-el-Sagha beds (Middle 

 Eocene). [M. 8909.J 110 



2. Ditto ; axis vertebra, anterior and (2 a) lateral views : one-third nat. size. 



Same horizon. [C. 10059.] 112 



3. Ditto ; posterior cervical vertebra, posterior view : one- third nat. size. Same 



horizon. [M. 8899.] 112 



4. Ditto ; dorsal vertebra, associated with type mandible, anterior and 



(4 a) lateral views : one-third nat. size. Same horizon. [C. lOOOO.J 112 



5. Ditto ; left scapula, outer view : one-third nat. size. Same horizon. 



[C. 10020.] 117 



6. Ditto; left humerus, posterior and (6a) anterior views: one-third nat. size. 



Same horizon. [M. 8931.] 117 



7. Ditto ; proximal end of ulna, anterior view : one-third nat. size. Same 



horizon. [M. 8911.] 118 



8. Ditto ; right femur, anterior and (8 a) posterior views : one-third nat. size. 



Same horizon. [M. 8932,] 119 



9. Ditto ; imperfect pelvis, dorsal and (9 a) lateral views : one-third nat. size. 



Same horizon. [M. 8914.] 118 



a., acetabulum. 

 a.t., surface for axis, 

 a.z., anterior zygapophysis. 



c, coracoid process. 

 C.&., coracoid border. 

 c.f., coronoid fossa (Sg. 6 a), capitular facet 



(fig. 4 A). 



e.i; crista ilii. 



cond., condylar facets. 



d., deltoid crest. 



g.h., glenoid border. 



g.c, glenoid cavity. 



g.tr., great trochanter. 



7f., head of humerus and femur. 

 li.y., hypapophysis. 

 I.e., inner condyle. 



is., ischium. 

 is.t., ischial tuberosity. 

 ht., pit for ligamentwn teres, 

 l.tr., lesser trochanter. 

 n.sp., neural spine. 

 od., odontoid process. 

 0./., olecranon fossa. 

 ol., olecranon process. 

 pu., pubis. 



p.z., posterior zygapophysis. 

 J-., surface for radius, 

 s., spine of scapula. 

 t.f., tubercular facet. 

 t.p., transverse process. 

 V.C., vertebrarterial canal. 



