1855.] Remarks on the different species of Orang-utan. 525 



ground; and the present being the most complete of them and 

 otherwise the least injured. 



"We now come to the female Pappan already noticed ; which, 

 though of greater size than the male described on a former occasion, 

 with considerably longer and broader pelvis, has nevertheless a 

 smaller skull, less prominently developed jaws, and conspicuously 

 smaller teeth : the zygomatic arch is shorter and a little weaker 

 than in the male ; but the superciliary ridges and width of the bony 

 orbits are much the same, and in fact there is little further differ- 

 ence between the two skulls : the bony crests on the vertex are less 

 prominent in the female, and they approach to within f in. of each 

 other ; whereas in the male they remain 1 in. apart where most ap- 

 proximated : length of base of skull, from between the middle incisors 

 to the anterior margin of the occipital foramen, 6f in. in the male, 

 and 6i in. in the female : breadth of zyyomata apart 6f in. in both. 

 This skeleton is also nearly perfect. Length of humerus 15 in. ; of 

 ulna 15f in. ; femur W\ in. : tibia lOf in. : circumference of middle 

 of trunk of humerus 3i in. ; of femur 3 in. : metacarpal bone of 

 middle finger 4-g- in. ; first phalanx 3£ in. ; second l|f in. : meta- 

 carpal bone of one thumb 2 in., of the other somewhat less, and 

 bearing a very short first phalanx, only J in. ; metatarsal bone of 

 middle toe 4 in. ; first phalanx 3 in. ; second If in. : metatarsal of 

 hallux 2£ in.: clavicle 7i in.: scapula 8^- in. in extreme length: 

 and pelvis lOf in. long, and llf in. broad at the hips. 



Lastly, we arrive at the new species, which may be designated 

 Pithecus cuetus. It is perhaps the genuine Mias Chapin of the 

 Dyaks. The specimen is decidedly male, and well advanced in 

 years ; and the skull has a more anthropoid appearance than that of 

 any other Orang known. This chiefly results from the much reduced 

 prolongation of the muzzle, while the cheek-bones project remark- 

 ably, giving a sort of Kalmuk expression to the skull ! The absolute 

 projection of the maxilla, in a horizontal line carried from the lower 

 margin of the orbital ring, is, in our large Sumatrau male Rambi 

 skull, fully 3 in. ; in the male Pappan it is about the same ; in the 

 female Pappan 2\ in. ; in the old female Kassar (a much smaller 

 animal) about 2\ in. ; and in the great male cuetus barely 2 in. ! 

 Extreme breadth of zygomata 7 in. : height of the skull, with lower 



3 z 2 



