f^pecies and Subspecies of Monkft/f. '2 I') 



gradinfj into tawny oclirarrons on the rump ; flanks dark 

 grizzled brownish grev ; hairs on ears, cheeks, arms from 

 elhows, liands, logs from above knees, feet, inner side of 

 limbs, ohin, throat, and nndcr parts of body rich dark bnrnt 

 sitMina; tail very long, grizzled white and hla -k, the orange- 

 bntf of the basal portion of the hairs showing through, 

 darkest at l)ase, and the tip but?'; the rest of t!)e tail is 

 tawny ochrace )us like the rump. 



Measurements. Total length 8")() mm.; tail 520 (skin). 

 Skull: occipito-nasal length 2iVl ; zygomatic width 10 6; 

 palatal length 29' I ; length of nasals IJ.'i ; length of tipper 

 molar series 11.'2 ; length of mandible 4^r.'3; length of lower 

 molar series lo'S. 



Type. Adult, in British Museuin, no. 8'). 5. 0. \ [. 



This species differs in many ways from all the others in 

 the geniis. It is the only one of the cuprca style with a 

 uniformly coloured mantle, and one so long and thick as to 

 resemble a mane. The red on arms and legs extends much 

 higher than in any other species. A single specimen was 

 procured by Mr. Buckley at Andoas. 



Genus L.\gothrix. 



Lagothrix thomasi, sp. n. 



Type locality. Callanga, Cuzco, Peru. Altitude 1500 m. 



Co/our. Head in front of ears seal-brown ; upper parts of 

 body, flanks, and arms to elbow grizzled grey and ochra- 

 ceous, the hairs being ochraecous at base ami ringed with 

 black and white, and tipped with w liite ; dors.il line blackish ; 

 hairs on back of neck ochraceous, with a single broad sub- 

 terminal black band and white tip, causing this part to be 

 darker than the rest of the upper parts, excepting the dorsal 

 line ; forearms and legs grizzled black and tawny, the hairs 

 being tawny, w ith subterminal black bar and white tip ; 

 hands and feet black, the hairs with tawny tips ; inner side 

 of arms and legs and central portion of chest and abdomen 

 black ; tail above and basal portion beneath grizzled grey 

 and ochraecous like back, remainder beneath black. 



Measurements. Size quite equal to that of L. lagotricha. 

 Skull: occipito-nasal length 98 mm.; hensel 88' A; zygo- 

 Uiatic width T'J"! ; intertemporal width 59"-t ; palatal 

 length o9'6 ; length of nasals 1()7; length of upper molar 

 series 24 ; length of manddjle 78 ; length of lower molar 

 series 38'5. 



Type. Adult, in British Museum, no. ij8. 11. 6. 2. 

 Ann. cO Mao. A. Hist. J3(?r. 8. Vol. iv. 18 



