HIPPOPOTAMUS. 



23 



Fio. 6. -Sacrum. J natural size. Prom Barrington, preserved in the Sedgwick Museum, Cambridge. 

 ((, articular surface for ilium ; o, anterior face of centrum of 1st sacral vertebra ; r, centrum of 2nd sacral 

 vertebra ; d, transverse process of 1st caudal (1st pseudo-sacral) vertebra; e, neural spine of 2nl sacral 

 vertebra. 



Fig. 7. — Free caudal vertebra;, mounted in the skeleton made up of bones from Barrington in the 

 Sedgwick Museum, 'Cambridge. \ natural size a, neural spine ; 6, metapophvsis ; c, transverse process ; 

 d, anterior face of centrum of 7th caudal (4th free caudal). 



Measurements of Sacral and Caudal Vertebrae. 



1 . Length of sacrum 



2. Height to top of neural spine of 2nd 



true sacral 



3. Measurement across transverse pro- 



cesses of 2nd caudal (pseudo- 

 sacral) 



4. Measurement across transverse pro- 



cesses of 7th caudal (3rd free 

 caudal) 



Mounted skeleton I Separate sacrum 



n-ii- „ :, -j it., from Barrington, 



720 n m Zool. Dept. Spd.'wirk Miw 



of Brit. Mus. ,, , T ,« j\' 



Cambridge (figd.). 



27-1 

 83 



103 



110 



106 



Sacrum associated 

 with pelvis from 



Barrington, 

 Sedgwick Mus , 



Cambridge (figd.l. 



334 

 11-0 



