12 SMITHSONIAN MISCELI.ANEOUS COLLECTIONS VOL. 56 



of glossy black; shoulders with much more black, giving them a 

 general grizzly appearance, the individual hairs with an extra ring 

 of black. Lower neck and arm-pits white ; arms below elbow and 

 hands dirty creamy white. A dark stripe, from middle of back to 

 tip of tail, cinnamon-rufous, richest and darkest on rump and root 

 of tail, where it is pure glossy bay, and shading to pale ochraceous 

 at tip of tail. Rump to callosities and down outer sides of legs 

 slightly more than half way to knees glossy bay; outsides of legs 

 and feet cream ; inner sides of legs white ; under side of tail cream. 

 Long hair of sides pale cinnamon-rufous, with less black than above ; 

 belly thinly haired, the hairs ochraceous to ochraceous-buff with 

 white tips. 



Measurements of type. — Length of skin from nose to root of tail, 

 870 millimeters; length of tail (dry skin), 640. Skull: Greatest 

 length, 149; condylobasal length, 120; zygomatic breadth, 99; length 

 of nasals, 22.5; maxillary tooth row, exclusive of canines, 32. 



Brythrocebus zvhitei seems to be a very different animal from any 

 of the previously described species. It differs from the plate of the 

 type specimen of £. pyrrhonotiis^ in its grizzled back and shoulders, 

 black lines over eye to ears and crown, dark bay frontal patch, and 

 restricted markings on legs. From E. formosus it differs in the 

 black brow line extending between eye and ear ; hair of lower rump 

 and back not yellow tipped, but black tipped, giving the whole back 

 a very different color — cinnamon-rufous mixed with black, instead 

 of yellowish ; sides of neck and chest and outer sides of arms not 

 lemon yellow. From B. baumstarki it may be distinguished by the 

 general body color, dark grizzled cinnamon-rufous, instead of pale 

 light red ; distinct black forehead band and no white between eye 

 and ear, and many other characters. 



Several small groups of these red monkeys were seen on the Guas 

 Ngishu Plateau, in the neighborhood of the Nzoia River. Two 

 specimens were killed by the party; both single males shot from 

 low trees. As usually seen, they were in parties of three or four 

 to a dozen animals, traveling on the ground in open country, and 

 were very hard to approach. 



^Geoffroy-St. Hilaire and Cuvier. Histoire Naturelle des Mammiferes, Tome 

 7, 1842. 



