144 ALLEN'S NATURALIST'S LIBRARY. 



Characters. Differs from M. weddeUi 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, pi. 20 



(1823). 

 Midas flav if rons, Is. Geoffr., Cat. Meth. Primates, p. 64 (1851) ; 



Castelnau, Exped. Amer. Sud, Mamm., pi. vi., fig. i 



( X 855); Gray, Cat. Monkeys, Brit. Mus., p. 67 (1870). 

 Midas devillii (nee Is. Geoffr.), Slack, Proc. Acad. Nat. Sc. 



Philad., 1 86 1, p. 464. 



Hapale fnscicolliS) Schl., Mus. Pays Bas, vii., p. 264 (1876). 

 Hapale chrysomelas (nee 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., Simiae, p. 

 249 (1840); Schl., Mus. Pays Bas, vii., p. 254 (1876). 



Characters. Similar to M.fuscicollis. Black, with the thighs, 

 legs, and base of tail rusty-red. 



Distribution. Brazil, near Ypanema, Province of St. Paulo. 



