96 



JORNAL DE SCIENCIAS MATHEMAT1CAS 



5.° — the rump is coloured like the back, and not dark reddish 

 brown (Gray); 



6.° — the terminal */s of the tail are reddish, neither olive-coloured 

 (Àudebert), nor while on the under region of de basis two third parts 

 (Schlegel), nor blackish on the taiPs extremity and the underside of 

 basis dark reddish brown (Gray). 



This difference of characteristics cannot be impuled to the diffe- 

 rence of age, beeause there exists in lhe Zoological Garden of Lisbon 

 another young exampler, olTered by dr. Ramada Curto, surgeon in 

 western Africa, who defines them eqnally by the lail's colonr; and be- 

 sides, the same Garden possesses another Monkey agreeing perfectly 

 with Aiidebert's description. 



The parallel between the above alive individuais, and the impos- 

 sibility of harmonizing Audeberfs and SchlegeFs descriptions with 

 GrayV induce me to admit in these Cercopithecus white spotted on the 

 nose the three different externai appearences characterised as follows: 



C. ascanias 



Fur olive-coloured. 



Chin, breast and belly, and 

 inside of arms and legs 

 dark grey. 



Tuft of yellowish white 

 hairs on the temples ; 

 yellowish white whis- 

 kers bordered black. 



Rump and back of the same 

 colour. 



Tail olivatre ali over, or 

 white on the underside 

 of two third paris of ba- 

 sis, and reddish yellow 

 on the terminal third 

 part. 



C. ludio 



Fur blackish minutely yel- 

 low grizzled. 



Throat, upper part of the 

 inside of arms and lower 

 part of the body whit- 

 ish. 



No white on the cheek or 

 temples. 



Rump dark reddish brown. 



Underside of basis of tail 

 dark reddish brown and 

 end blackish. 



New form. 



Fur dark bluish grizzled 

 ringed yellow. 



Chin and throat bluish 

 white. Breast and upper 

 part of arms and legs 

 grizzled (gris Payen). 



Tuft of bluish white hairs 

 on the temples. Black 

 whiskers (bordered yel- 

 low dirty, juv.) 



Bump and back equal in 

 colour. 



Tail on the upper side of 

 the fifth part of basis 

 the same colour of the 

 back, on the underside 

 colour of tbe belly, the 

 remainder four fifth parts 

 copper reddish. 



^eally, Àudebert, establishing the difference between the Blanc-nez (G. 

 petaurista, Erx.) and his Aseania, says: «L'Ascagne a de plus un touffe de poils 

 d'un beau blanc sur chaque tempe* and Gray writes with the same purpose 

 <í. . .and especially by the absenee of any white on the cheek or temples » and 



