144 ALLEN’S NATURALIST’S LIBRARY. 
Characters.— Differs from JZ. weddel/i in having the fur washed 
with rufous, and the hairs finely ringed. 
Distribution — Unknown. 
VIII. THE BROWN-HEADED TAMARIN. MIDAS FUSCICOLLIS. 
Midas fuscicollis, Spix, Sim. et Vespert. Bras., p. 27, pl. 20 
(1823). | 
Midas flavifrons, Is. Geoffr., Cat. Méth. Primates, p. 64 (1851) ; 
Castelnau, Expéd. Amér. Sud, Mamm., pl. vi, fig. 1 
(1855) ; Gray, Cat. Monkeys, Brit. Mus., p. 67 (1870). 
Midas devillit (nec Is. Geoffr.), Slack, Proc. Acad. Nat. Sc. 
Philad., 1861, p. 464. 
Hapatle fuscicollis, Schl., Mus. Pays Bas, vii., p. 264 (1876). 
Hapale chrysomelas-(nec Kuhl), Schl., t. c. p. 254. 
Characters.—Pelage mostly black; head and face brown or 
reddish-brown, with some grey hairs ; lips white, but the nose 
black ; top of the head yellow, or yellowish-red ; back yellow 
and black; hands and feet black; outside of the limbs and 
base of the tail reddish ; under side of the body and inside of 
the limbs brownish-red. 
The female differs in having the outside of the limbs and 
the underpart of the body blackish. 
Distribution.— Brazil. 
Habits—Nothing is known of the individual habits of this 
species. 
IX. THE YELLOW-TAILED TAMARIN. MIDAS CHRYSOPYGUS. 
Hapale chrysopyga, Wagner, in Schreb. Saugeth., i., Simiz, p. 
249 (1840); Schl., Mus. Pays Bas, vil., p. 254 (1876). 
Characters.—Similar to AZ. fuscicoliis. Black, with the thighs, 
legs, and base of tail rusty-red. 
Distribution.—Brazil, near Ypanéma, Province of St. Paulo. 
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