292 On an opparentlj new Species of Monkey. 



XL. — Description of an apparently new Species of Monkey of 

 the Genus Cebus. Bj D. G. Elliot, D.Sc, F.'R.S.E., &c. 



Cehtis apiculatus, sp. n. 



Type locality. La Union, Lower Orinoco. Typo in 

 British Museum. 



Colour. — Male. Face flesh-colour. Black spot on middle 

 of crown extending in a narrow line on to the forehead ; rest 

 of head greyish brown, becoming greyish white on forehead 

 and sides in front of ears; scape reddish brown; uppir half 

 of back blackish brown ; lower half of thighs and root of 

 tail blackish brown, all tlie hairs tipped, with russet, giving 

 this part a reddish appearance ; arms to wrist on outer and 

 inner sides pale yellow, the hairs being blackish brown at 

 base and tipped with pale yellow, which becomes the dominant 

 colour; wrists and hands blackish brown; hairs towards 

 shoulders are pale yellow to the roots, the blackish-brown 

 tases appearing at the elbows ; legs on outer side pale yellow, 

 becoming reddish below the knees, the hairs being blackish 

 brown tipped with pale yellow to the knees and then tipped 

 with golden ; throat yellowish white ; chest yellowish brown ; 

 rest of underparts dark brown in the centre of body, the 

 hairs pale yellow at base ; hands blackish brown, feet black ; 

 tail above like thighs until near tip, the hairs being black 

 tipped with pale yellow, tip blackish brown, beneath blackish 

 brown the entire length. 



Measurements. Total length about 9L8 mm. ; tail 459 (skin). 

 Skull : total length 91 ; occipito-nasal length 81 ; liensel 59 ; 

 zygomatic width 59 ; intertemporal width 42 ; palatal 

 length 32 ; breadth of brain-case 52 ; length of nasals 19; 

 length of upper molar series 21 ; length of mandible 55 ; 

 length of loM^er molar series 24. 



Type. Adult male. B.M. no. 5. 5. 24. 1. Collected 

 25th Oct., 1903, by Mr. Klages. 



A female from the Guayapo, Lower Orinoco, has much 

 longer hair in front and on sides of head, standing out in the 

 shape of a semicrest ; the upper arms are darker, being a 

 yellowish brown ; the back is not so conspicuously tipped 

 with yellow and is more red at the rump, as are also the 

 legs ; the black of the crown is broader and covers all the 

 back of the head; the tail is like that of the male ; all the 

 untlerparts are blackish brown, only the roots of the hairs on 

 the chest being yellowish white. 



