a 
CLASS MAMMALIA. 
ORDER ANTHROPOIDEA. 
FAMILY LASIOPYGID£E. 
GENUS VIII. MIOPITHECUS. 
2—2 4 2—2 a 
I. 5-93 C. gegs) . Pe ges M.. 2g = 32. 
MIOPITHECUS I. Geoffroy, Comptes Rendus, XV, 1842, p. 1037. 
Type Simia talapoin Schreber. 
Size small; posterior lower molar with only three cusps; hairs 
in front of ears radiate from a point like a fan. 
But two species of this genus are known at the present time, one 
from the Gaboon, M. TALAPoIN, and the other M. ansorcer from 
Angola, West Africa. They are small animals compared to the species 
composing the genera placed before and after them, and they differ 
from them structurally, in having only three cusps on the last lower 
molar. As the presence of a fifth cusp on the same tooth in CERCOCE- 
Bus has been to a large degree the cause for separating the species of 
that genus, it would be reasonable to consider that the two species of 
MioriTHEcus should also be accorded generic rank founded mainly 
upon tooth structure. , 
KEY TO THE SPECIES. 
A. General hue greenish. 
a. Upper parts dark olive yellow................. M. talapoin. 
6. Upper parts greenish yellow,.................. M. ansorgei. 
MIOPITHECUS TALAPOIN (Schreber). 
Simia talapoin Schreb., Saugth., I, 1775, p. 101; Bodd., Elench. 
Anim., 1784, p. 59; Gmel., Syst. Nat., I, 1788, p. 101; Fisch., 
Syn. Mamm., 1829, p. 21. ! 
Cercopithecus talapoin Erxl., Syst. Regn. Anim., 1777, p. 36; E. 
Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 1812, p. 93; Desm., 
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