530 DR. J. ANDERSON ON A NEW INDIAN MONKEY. [Apr. 16, 



colorous with the hack, and paler on the under surface. The hair on 

 the top of the head is directed backwards. There is a superciliary 

 band of black and dark brown hairs extending to the external orbital 

 angle of the malar, where it meets with another similar band that 

 reaches to the ear, or nearly so. The hairs of the latter band on 

 one side in the skin form a tuft below and posterior to the external 

 angle of the eye ; and another occurs behind the fronto-malar suture. 

 The hair on the side of the head behind the angle of the mouth is di- 

 rected forwards, and is concolorous with the inside of the limbs. 

 The ears are well clad ; and there is a tuft of dark brown, almost 

 blackish hairs at their upper margin. The maxillary region is 

 sparsely covered with short hairs ; and the margins of the lips are 

 thinly clad with long black hairs. 



As all my efforts to obtain a living example of this Monkey have 

 proved fruitless, I am unable to say any thing regarding the colour 

 of the skin of the face beyond what I have already stated on the 

 testimony of natives. The callosities are more or less oval, and 

 measure 1" 9'" in extreme length and 1" 1'" in their greatest 

 breadth ; all the parts about them, and the back of the thighs below 

 them, are thickly clad with brown hair and not seminude as in I. 

 rhesus. The thumb is well developed ; and the fingers and toes, 

 when stretched in the dried skin, do Dot exhibit the iuterdigital 

 membrane extending beyond the middle of the first phalanx. 



The distinguishing features of the shull, as compared with I. 

 rhesus, are these : — It is larger than any skull of 2". rhesus that has 

 come under my observation, and is considerably more elongated, as 

 is best seen when the two skulls are viewed from the under surface. 

 In that position the facial portion is observed to be proportionally 

 more strongly developed, larger and broader than in /. rhesus, and 

 to ecjual nearly one half of the entire length of the skull, while in 

 the latter species the facial portion is hardly perceptibly more than 

 a third of the extreme dimensions of the skull. Tbese proportions 

 are founded on lines drawn vertically to the extremity of the prae- 

 maxilla and frontal, and another to the hinder margin of the skull. 

 The greater size and more elongated character of the muzzle of the 

 Sunderbunds Monkey is also well apparent in front and profile views 

 of the skull. In the former aspect a striking feature is the broad 

 and slightly concave preorbital surface, due to the outward convexity 

 of the maxillae produced by the enormously developed canines. In 

 profile (see figs. 1 & 2, p. 531) the facial portion (maxillary region) 

 is seen to be thrown more forwards than in I. rhesus, owing to the for- 

 ward projection of the maxillary ; and the infraorbital section of the 

 malar is of great vertical extent, and directed outwards, forwards, and 

 downwards ; while in an adult skull of undoubted /. rhesus before me 

 it is relatively much less expanded, and courses downwards and back- 

 wards. The infraorbital foramina are more remote from the margin of 

 the orbit than in the last species. Another distinction between the two 

 skulls is the much greater forward sweep and less curved character of 

 the nasals in the Sunderbund Monkey, which also confers on the face 

 a greater forward extension and expansion of the muzzle than in I. 



