LASIOPYGA 379 



ringed with black and white, giving a gray appearance speckled with 

 white; a narrow white stripe across thigh from knee; black patch over 

 knee; thigh below white line, and hind part of leg, blackish gray; front 

 part of leg grizzled gray ; a black line bordered outwardly by a yellow- 

 ish white line from shoulders to below elbows ; forearms from just 

 above elbows, hands and feet above ankles, black; space around eyes, 

 and upper part of nose black; tip of nose, lips, sides of under jaw, chin, 

 beard and throat, white; chest and abdomen black; tail like back at 

 root, rest black. Ex type in Paris Museum. 



Measurements. Total length, 1,295.4; tail, 685.8; foot, 171.4. 

 Skull: total length, 116; occipito-nasal length, 97; Hensel, 80; zygo- 

 matic width, 79 ; intertemporal width, 46 ; palatal length, 44 ; breadth of 

 braincase, 61 ; median length of nasals, 23 ; length of upper molar 

 series, 27 ; length of mandible, 81 ; length of lower molar series, 35. 



In his paper on Cercopithecus, (Lasiopyga), Mr. Pocock sep- 

 arates a specimen from the French Congo, as L. n. brazziformis, on 

 account of the legs to ankles being a pale grayish green instead of a 

 blackish olive. In the series obtained by Mr. Bates on the River Ja, in 

 Cameroon, and all of which Mr. Pocock states he could not dis- 

 tinguish specifically from his L. neglect a, (L. brazz^), is an example 

 with legs colored precisely like the one from the French Congo. This 

 last is not sexed, but the one from Cameroon is marked female. It 

 may be possible that the color of the legs may be attributed to sex, but 

 the fact that both styles of coloring were found in individuals taken in 

 the same place in Cameroon, would indicate that the difference in hue 

 in the legs was not a specific character, but must be attributed to some 

 other cause, such as age or sex, or possibly to individual variation. I 

 have therefore placed brazz^formis among the synonyms of L. brazz.^;. 



Mr. Pocock described in the Proc. Zool. Soc. Lond., 1908, p. 158, 

 pi. X, fig. 2, a young animal without locality or history as C. ezrce, and 

 which differs from L. brazz^e in not having the black on the hinder 

 part of the head, and the outer side of the limbs, hands, and feet not 

 yet jet black. The specimen is so young, and its pelage so affected by 

 captivity (the hair on the loins having all been worn away by the rope 

 or chain that held it, and the tail having lost all its hair, except a little 

 at the root), that it makes a most unsatisfactory type for a distinct 

 form, and it is to be regretted that such specimens should ever be 

 selected to be the unique representative of a new species. At present 

 it can only be surmised what the full grown animal would look like, but 

 probably it might be recognizable from L. brazzce by having the head 



