OCR Text |
Show 1904.] SPECIES OF SPOT-NOSED MONKEY. 435 evanescent towards the ear. The direction of the hairs of this band follows its curvature. Beneath it the cheek is a dirty greyish white, which gradually passes into the grizzly-yellow colour of the sides of the neck. A scanty fringe of white hairs upon the ear. Occipital area blackish. Nape of neck and shoulders speckled yellow and black ; between the shoulders and the root of the tail the coat is speckled black and rich coppery yellow. A r m externally speckled yellow and black, becoming blacker upon wrist and hands and upon the posterior side below the elbow. Leg externally speckled yellow and black to the upper side of the foot; much more sobre-tinted than the sacral region, but the tints of the two areas blending imperceptibly, without any intervening line of demarcation. The whole of the underside grey, whiter upon the chin, where there are some black hairs, and upon the throat; dusky olive-grey upon the chest and belly, where the hairs are apically annulate ; inner side of arms and legs also dark ashy grey. Upper side of tail in its basal half speckled red and black, redder than the sacral region, although the tints of the two areas pass gradually into one another; posteriorly the upper side becomes gradually yellower, then greyish black, with the terminal hairs quite black; underside of tail deep rusty red in its basal half, passing into ashy grey posteriorly, a sharp line of demarcation between the tints of the upper and under side. Some rusty-red hairs upon the perineal region and scrotum. Measurements of dried skin:-From crown of head to root of tail 14| inches (363 m m . ) ; length of tail 2 4 | inches (613 mm.). Loc. W . Africa : Benin. This species is based upon the skin of a young male specimen with complete but unworn dentition, that was deposited in the Gardens by Mrs. Pickering Phipps on July 12th, 1902, and died on the 8th of August in the same year. I have much pleasure in dedicating the species to Dr. P. L. Sclater, who, recognising the importance of preserving material of this genus, instructed Mr. Ockenden, the assistant to the Society's Prosector, to skin examples of the genus Cercopithecus that died in the Zoological Gardens. It was largely upon material thus obtained that Dr. Sclater based his monograph of this genus published in the ' Proceedings' for 1893. The form of the nose-spot points to affinity between this speeies and C. cephus and C. erythrotis. From 0. Cephas it differs mainly in the following characters:-(1) The hairiness of the nose; (2) the absence of moustache-band ; (3) the pallid upper lip and chin ; (4) the. sinuous curvature of the black cheek-band ; (5) the extension of the grey tint of the throat up to the level of a line joining the nostril and lower edge of ear ; (6) the presence of a black occipital band as strongly defined as in C. petaurista ; (7) the shortness of the white ear-fringe; (8) the presence of red hairs upon the scrotum and all along the proximal portion of the underside of the tail. It is nearer to C. erythrotis, but may be at once distinguished PROC. ZOOL. Soc-1904, YOL. I. No. XXIX. 29 |