THE CONEYS 233 



other hand they differ from most Ungulates in the incisors grow- 

 ing from persistent pulps, a point in which they resemble the 

 Eodentia. The muffle also is split as in those animals. The 

 Hyracoidea are peculiar in the fact that in addition to the caecum 

 at the junction of the small and large intestines, there are a pair 

 of caeca (bird-like in being paired) some way down the large 

 intestine. The dorsal vertebrae are unusually numerous, 22. The 

 adult dentition according to Woodward, 1 who has recently ex- 

 amined the matter, is I \ C (^) Pm ^ M ^, while the milk 

 dentition is I f C \ Pm J- . 



The inclusion of the canine of the permanent set of teeth in 

 brackets signifies that it is the milk canine which occasionally 



FIG. 120. Cape Hyrax. Hyrax capensis. x J. 



persists. It should further be remarked about the teeth that 

 they are both hypselodont and brachyodont, the extremes being 

 connected by intermediate forms. Another peculiarity of the 

 genus is the dorsal gland, which is covered with hair of a different 

 colour to that covering the body generally. This is present in all 

 species. 



The genus Hyrax (the most recent authority on the subject, 

 Mr. Oldfield Thomas, 2 only allows one genus) is limited in its 

 range to Ethiopian Africa and to Arabia, including Palestine, 

 It does not reach Madagascar. Mr. Thomas allows fourteen species 

 with two or three sub-species. 



1 M. F. Woodward "On the Milk Dentition of Procavia (Hyrax) capensis, 

 etc," Proc. Zool. Koc. 1892, p. 38. 



2 "On the Species of the Hyracoidea," Proc. Zool. Soc. 1892. p. 50. 



