ROYAL MONKEr. 71 
assures us, that one sometimes mounts the top 
of a branch, and assembles a multitude below : 
he then sets up a howl so loud and horrible, that 
a person at a distance would imagine that a hun- 
dred joined in the cry : after a certain space he 
gives a signal with his hand, when the whole as- 
sembly join in chorus; but on another signal a 
sudden silence prevails^ and then the orator 
finishes his harangue. This howling faculty is 
owing to the conformation of the os hyoides, or 
throat bone, which is dilated into a bottle-shaped 
concavity. 
ROYAL MO K KEY. 
Simia Seniculus. Lin, S. caudata harhata rufa, cauda prehensiii. 
Lin. Syst. Nat. p. 37. 
Long-tailed bearded red Monkey, with prehensile tail. 
Alouate. Buf. l$- p. ^. and suppl. p. ^y.pLij, 
Royal Monkey. Pennant ^adr. 2 1 5 . 
This is sometimes considered as a variety of 
the former, from which it differs in being of a 
very bright bay colour. In other respects it is 
said to resemble the former. It is, however, in 
al) probability, a distinct species. In the Leve- 
rian Museum are two which appear to be young 
animals. They are about the size of a squirrel^ 
and entirely of a very bright ferruginous or red- 
dish chesnut colour, with the face naked and 
black, surrounded on the lower parts by a strag- 
gling beard of black hairs, and the tail is strongly 
