OCR Text |
Show 6 MR. W. F. R. WELDON ON CALLITHRIX GIGOT. [Jan. 15, I may remark in conclusion another interesting e T m 1 bryoni«;iff^ of Tetraceros, namely the fact that it is, so far as I know, the on.y ruminant except Moschus with a uniserial psaltenum . 2. Notes on Callithrix gigot. By W . F. R. W E L D O N , B.A. [Received December 12, 1883.] In September last a specimen of the rare Monkey Callithrix gigot, Spix, died in the Society's Gardens, and came into m y hands for dissection. It seems to* me that a few short notes on its anatomy may be of use. External characters.--The hair was long and soft, slightly woolly over the trunk. On the forehead it was shorter and more thickly set; over the limbs short and loose. The general colour of the dorsal surface was reddish grey, redder behind, more ashy over the forehead and limbs. A typical hair from the back was about two inches long ; black at the root for half an inch, then cream-coloured for three quarters of an inch, the tip being ringed with chestnut and black. The muzzle and chin were black, with a few short, strong, white hairs ; a black line ran up the nose and round the eyes, the lids of which were white with black lashes. The long hairs of the brows were black. The forehead was thickly covered with pale grey hairs, slightly tipped with black ; and a faint black ridge ran across it between the ears. The ears themselves were black, covered with short black hairs except for a small grey tuft at the postero-external angle. In front of the cars* a very light grey band passed over the cheek, being continued above on to the forehead, below on to the chest. The throat was naked, the skin in this region being of a bright pink colour. The limbs had their inner surfaces pale grey, while the hands and feet areablack. The tail was red, the hair being more bushy at the base than at the apex, which might, however, be an effect of friction during confinement. The dimensions of the specimen, which was a young female, are given below:- foot, inches. From muzzle to root of tail, over back. ... 1 2 From chin to anus, over belly 1 1 Length of tail, including hair 1 1^ From occiput over forehead to upper lip . . 0 3| Breadth of nasal septum 0 T 7 ff From nostril to inner canthus 0 | 1 See Professor Garrod's valuable remarks on the arrangement of this structure, P.Z.S. 1877. |