21 



freely intermingled with white on tlie shoulders and sides, the white 

 gradually increasing backvvards so as to render tlie loins only 

 sliglitly grizzled with black. At the root of the tail the colour is 

 fulvous, which gradually disappears until the extreme half of the 

 tail is white with a slight tinge of yellow. The outer side of the 

 anterior limbs is at the upper part of the slaty grey of the sides, 

 below vvhich it is pale fulvous ; the hands are black, with the ex- 

 ception of tufts of long fulvous hairs at the extreraities of the thumb 

 and fingers, extending beyond and covering the nails. The outer 

 sides of the hinder limbs, after receiving a tinge of fulvous from the 

 colour surrounding the root of the tail, are of a paler fulvous than 

 the anterior limbs : this becomes much deeper on the hands, which 

 are fulvous except on the fingers, \vhere there is a very considerable 

 intermixture of black, the terminai tufts, equally long vvith those 

 of the anterior hands, being, as in them, fulvous. The under-sur- 

 face is*white throughout, with the exception of the hinder part of 

 the throat, where it is of the šame colour vvith the sides of the body. 



The hairs are generally long, silky, waved, erect, and glossy. 

 On the crupper they are shorter and more dense, offering a sort of 

 woolly resistance. On the tail they have the general character of 

 those of the body, but are considerably shorter. 



On the anterior hands the thumb is slender ; it is placed far back, 

 and is extremely free ; itslengthis 1^ inch, the extremity of itspen- 

 ultimate phalanx ranging slightly beyond the end of the metacar- 

 pal bone of the index. The iHdex is 1^ inch in lengih ; its extre- 

 mity rangės witli the middle of the penultimate phalanz of the se- 

 cond finger : the length of the second finger is 3 inches : that of the 

 third finger is S^į. The length of the carpiis and metacarpus is 2 

 inches. 



On the hinder hands the thumb is very strong, placed forvrards 

 and ranging with the fingers : it is 2 inches long : the i7idex is 2k 

 inches, the pointed nail extending į an inch beyond : the length of 

 the 2d finger is 3+ : of the tarsus and metatarsus 3 inches. 



The length of the body and head, measured in a straight line, is 

 1 foot 9 inches ; of the tail, 1 foot 5 inches. The anterior limbs, 

 exclusive of the hands, measure 7^ inches in length from the body ; 

 the posterior, \5\. 



The muzzle is shorter than in the Lemnrs generally ; the distance 

 from the anterior angle of the orbit to the tip of the nose (Jį inch) 

 being equal to that between the eyes. 



The ears are concealed within the fur. They are of a rounded 

 form. Their length is 1 inch ; their breadth lį. 



From Lemur, the genus to which it most nearly approaches, Pro- 

 pithecus is essentially distinguished by the number and form of its 

 teeth, and especially by the form of the incisors of the upper jaw, 

 which conslitute apparentlj' aregular series, astructure unknownin 

 any other Lemnridous animal. This difference, striking as it is, is how- 

 ever niore of an apparent than a real deviation from the type of the 

 tamily, inasmuch as a tendency to dilate laterally towards their 

 cutting edges is observed in the upper incisors o^ Lemur, and it i& 



