64 
LOWER MAMMAL GALLERY. 
Pangolins (fig. 34), and the Aard-vark. The Sea-Cows, 
as represented by the Dugong and Manatee, are shown in the 
Geological Department. In the third bay are the Pigs and 
Hippopotamuses ; in the fourth the Camels, and near by the 
Ruminants, Chevrotains, or Mouse-Deer. Following on are the Deer {Cer- 
vidcb), many of which, as already stated, are placed in the 
middle line of the gallery. Properly speaking, the Giraffes 
and their recent and extinct allies, the former represented by 
Fig. 35. — Male Prongbuck or Pronghorn Aktelope {Antilocapra americana). 
the Okapi of Central Africa (fig. 13, p. 37), should come in here. 
But, as already mentioned, it has been found convenient to re- 
move all the members of the Giraffe group into the east corridor. 
In the adjacent wall-case stands the Prongbuck or Pronghorn 
Antelope {Antilocapra, fig. 35), the sole representative of a 
family characterised by the circumstance that the horns have 
hollow sheaths, which are branched and shed annually. ISText in 
order come the Antelopes, a large number of which are placed in 
