268 ALLEN’S NATURALIST’S LIBRARY. 
insulted and put into a furious rage by his keeper, who after- 
wards made friends with him, Mr. Darwin relates that, “‘as the 
reconciliation was effected, the Baboon rapidly moved up and 
down his jaws and lips, and looked pleased. When we laugh 
heartily, a similar movement or quiver may be observed more 
or less distinctly in our jaws ; but with Man the muscles of the 
chest are more particularly acted on; whilst with this Baboon, 
and with some other Monkeys, it is the muscles of the jaws 
and lips which are spasmodically affected.” 
VII. THE THOTH BABOON. PAPIO THOTH. 
Cynocephalus thoth, Ogilby, P. Z. S., 1843, p. 11; Frazer, Zool. 
Typica, pl. 5; Gray, Cat. Monkeys Brit. Mus., p. 35 
(1870). 
Cynocephalus babuin (nec Desm.), Rupp., Neue Wirbelth. 
Saugeth., p. 7 (1835-1840). 
? Papio hamadryas, Schl., Mus. Pays Bas, vii., p. 129, 1876, in 
part. 
Characters.—Male.— Body massive, thick-set ; face broad ; cheek- 
bones protuberant ; the nostrils placed at the extremity of the 
truncated snout ; nose as long as, but not exceeding, the upper 
lip. Hair of head and neck longer and thicker than on the rest 
of the body, but not forming a mantle-like mane as in C. Zama- 
dryas; the hair of the legs and outer portion of the thighs and 
of the toes long ; whiskers not intruding far on the face, and 
directed backwards, less copious than in the Arabian Baboon ; 
ears naked, pointed ; soles and palms also naked ; callosities 
large, hips naked. Tail nearly the length of the body, not 
tufted at the termination. 
In.colour somewhat similar to C. sp#inx, and closely allied 
to C. babuin. Face livid flesh-colour, lighter on the ridge of 
