78 Dr. D. G. Elliot on 



the centre and rising on each side on broad ridges extending 

 from forehead to occiput, unlike horns or tufts ; size large, 

 tail long, thick ; hairs of body long, loose ; arms above 

 elbows pale colour; fingers and toes grey. 



Colour (male). Top of head from forehead to nape, ex- 

 tending to hind-neck, black; temples and cheeks yellowish 

 white; dark brown band in front of ear down side to lower 

 jaw, but not meeting beneath chin ; dorsal region Prout's 

 brown, rest of upper parts and flanks bistre; arms above 

 elbows and sides of neck cream-buff; thighs ochraceous buff; 

 forearms and legs below knees black speckled with reddish, 

 most marked on forearms ; throat, chest, under parts to 

 scrotum, inner side of arms above elbows and innermost side 

 of thighs golden yellow, inner side of forearms, outer portion 

 of thighs, and legs below knees, scrotum, and anal region 

 black; hands and feet black, fingers and toes covered with 

 grey hairs; tail above three-fourths black speckled with red, 

 remainder black, beneath brownish black, hairs pale yellow 

 at base then brownish black, or towards tip greyish white at 

 base then black. 



Measurements, Total length 910 mm. ; tail 460; foot 132 ; 

 ear 35 (collector). Skull: total length 94'1 ; oecipi to- nasal 

 length 81*7 ; intertemporal width 70*3; palatal length 32*1; 

 length of nasals 28*1; length of upper molar series 23*5 ; 

 length of mandible G4'5 ; length of lower molar series 28"3. 



Type. Adult nude in the British Museum, no. 1. 11. 3. 4. 



This species belongs to the Azarce group as indicated by 

 the grey fingers and toes. It is, however, a much darker 

 animal than either G. azarce or G. a. pallidus. The patch 

 on the head is more extensive, heavier, and blacker than that 

 of C. azarce, and of course entirely different from that of 

 G. a. pallidas, with its two imperfect black patches. The 

 black cap of C. azarce has low ridges on either side, in some 

 "specimens these form upright tufts over forehead, quite 

 different from the conspicuous ridges of the present species, 

 which rise close together at the forehead, widen out as they 

 extend backwaid, until, with the exception of a narrow 

 division in the centre, they occupy the entire occipital portion 

 of the head. The colouring of the two forms, as the de- 

 scriptions show, is quite unlike. Five specimens were 

 procured by M. Robert on the Rio Jordao, in Araguay, 

 Western Minas Geraes, Brazil, all of which are in tne 

 British Museum. 



Cibus catiyinosus, sp. n. 



Type locality. Sta. Catharina, Sao Paulo, Brazil. 



