C[ Up. XVIII. 
DEVELOPMENT OP 1IAIE. 
283 
disappears in some of tlie domestic breeds of' the com- 
mon goat ; and neither sex of the Hemitragus has a 
beard. In the ibex the beard is not developed during 
the summer, and is so small at other seasons that it 
lr iay be called rudimentary. 16 With some monkeys the 
beard is confined to the male, as in the Orang, or is 
Fig. 66. Plthecia Satanas, male (fault Bretmi). 
Qmch larger in the male than in the female, as in the 
Mi/cetes caraya and Pitheeia satanas (lig. (50). So it is 
"ith the whiskers of some species of Macacus, 11 and, as 
■tve have seen, with the manes of some species of baboons. 
16 See Dr. Gray’s ‘ Oat. of Mammalia in British Museum,’ part iii. 
18 52, p. 144. 
17 Kengger, ‘ Saugethiere,’ &c., s. 14; Desmarest, ‘ Mammalogie,’ 
P. 66. 
