MAMMALIA. 



Family— CEBID^. 

 The black foreheaded Miriki. — Brachyteles frontatus. 



Plate I.— Adult and Young. 



Eriodes frontatus, Gray, Ann. and Mag. Nat. Hist. 1842, 256. 

 Brachyteles frontatus, Gray, List Mam. Brit. Mus. ] 0. 



Thumb of the fore-hand, none. Fur reddish brown, beneath yellowish brown. Forehead, 

 elbows, knees, and the upper sides of the arms and the fore hands, black. Young like the 

 adult, but with long white hairs on the cheeks, and among the black hairs on the 

 forehead. 



Inhab. Central America. 



The limbs and feet are very long and slender, even for this slender-limbed 

 genus. The sides and hinder part of the crown of the head, the middle of the 

 back and sides, rump, front edge of the thighs, and hinder part of the legs, and 

 the upper part of the tail, are bright reddish brown, with a rather golden tinge. 

 The middle of the crown of the head, the shoulders, and front part of the sides, 

 the outer side of the upper arms, and the hinder part of the outer side of the legs, 

 are yellower, varying rather in tint, and in parts gradually passing into the darker 

 colour of the back. The forehead, the front and outer side of the fore-arms, the 

 front of the lower parts of the thigh and the knees, and the upper surface of the 

 four hands, are blackish. The cheeks, side of the chin, throat, and chest, are dirty- 

 yellowish white. The face in the preserved specimen is blackish brown with 

 scattered yellowish hairs, which are most abundant on the lips, and longer on 

 the sides of the chin. 



The young specimen is like the adult in the general distribution of the 

 colours, but it is much paler and less bright, and the shoulders, front part of the 



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