ON THE BONES OF THE HIPPOPOTAMUS. 387 



Dimensions of the Skeleton of an Hippopotamus, measuring, when 

 alive, eleven feet in length. 



From the summit of the occipital crest to the edge of the ex- 

 terior aperture of the nostrils : upper part 0,584 



From the superior edge of one orbit to the other, backwards. . 0,336 

 From the most prominent pait of one zygomatic arch to the 



other 0,440 



Size of the occipital crest between the arches 0,172 



Size of the head taken above, opposite the suborbital holes. . 0,153 

 Size of the head taken above, from the alveolus of one canine 



to the other 0,350 



Same dimension taken below, from the most exterior part of 

 the tuberosity bearing the two incisors on one side, to 



that of the opposite side 0,243 



Height of the head, taken opposite the suborbital hole, from 



the alveolar edge 0,167 



Distance from the posterior extremity of the zygomatic 

 apophyses of the bone of the cheek, to the edge of the 



suborbital hole 0,280 



From the sarr.e extremity to the middle part of the occipital 



crest 0,290 



Antero-posterior diameter of the orbits 0,181 



Depth of the zygomatic fossa, taken from the internal surface 

 of that part of the arch which is most remote from the skull, 



to the latter 0,133 



Height of the head, taken from the superior edge of the occi- 

 pital hole, to the middle of the crest of the same name. . . . 0,135 

 Size of the head in the same place, taken from one inferior 



angle of the occipital crest to the other 0,292 



Height of the occipital hole 0,058 



Size of the same hole 0,070 



Length of the alveolar edge of the grinders 0,300 



Distance from the anterior extremity of the alveolar edges of 



the grinders to the alveolus of the canine teeth 0,1 17 



From the game place to the alveolus of the middle incisor . . 0,128 

 From the occipital hole to the posterior spine of the palatine 



vault 0,148 



Height of the aperture of the back nostrils 0,065 



Breadth 0,08! 



LOWER JAW. 



Size of the jaw, taken from the external alveolar edge of one 



canine to the other 0,370 



Size of the alveolar edge of the incisors 0,182 



Distance from one condyle to the other, taken from the external 



part of each condyle 0,407 



Distance from one coronoid apophysis to the other 0,230 



Interval between the coronoid apophysis and the condyle on 



the same side 0,079 



