723 



division of the transverse process into met-, di-, and an-apophyses is well shown in the tenth 

 dorsal with the vertical spine ; in the succeeding vertebrae these processes are distinct and 

 remote. Eight pairs of ribs directly articulate with the sternum, which consists of six bores 

 and an ensiform cartilage. The transverse processes of the last cervical are not perforated. 



Hunterian. 

 Section PLATYRHINA. 



Genus Hapale. 

 Dental formula : i ^f, c {=[, p g, m ^=32. 



4663. The skeleton of a male Jacchus Monkey (Hapale Jacchus}. 



The vertebral formula is : 7 cervical, 13 dorsal, 6 lumbar, 3 sacral, and 19 caudal. The 

 transverse process of the atlas is perforated lengthwise and vertically by the vertebral artery, 

 which afterwards perforates the neural arch. The bodies of the succeeding cervicals are pro- 

 duced posteriorly into a convex prominence which fits into a concavity on the fore part of the 

 centrum behind. The transverse processes of the third to the sixth cervical inclusive bifur- 

 cate, the pleurapophysial division increasing in breadth and length to the sixth : the trans- 

 verse process of the last cervical is imperforate, consisting only of a slender diapophysis. 

 Eight pairs of ribs directly articulate with the sternum, which consists of seven bones. The 

 accessory tubercle appears upon the middle dorsal vertebra ; it divides into met- and an- 

 apophyses on the tenth dorsal, where a diapophysial prominence still articulates with the 

 tubercle of the rib. The diapophysis disappears in the succeeding dorsals in which the met- 

 and an-apophyses become distinct and remote, with progressive increase of size. The diapo- 

 physis reappears in the first lumbar as a short depressed process, and increases in length and 

 breadth to the penultimate lumbar. In this vertebra the anapophysis becomes much shorter, 

 and almost disappears in the last lumbar. The coracoid process of the scapula sends a short 

 process backwards. The humerus is not perforated either above or between the condyles. 

 The ungual phalanges are compressed and falcate, and the pollex is on a line with the rest of 

 the digits of the fore-limb, not opposed to them. In the hind-limb the ungual phalanx of 

 the hallux is depressed for the support of a nail, and it is opposed as a thumb to the other 

 digits which have falcated ungual phalanges. The ilium is long and narrow, with a supra- 

 ootyloid ridge. The orbits do not communicate with the temporal fossae. 



Purchased. 



4664. The skeleton of a female Hapale Jacchu*. 



It repeats the characters noticed in the preceding, except that the second sacral vertebra is 

 broader. 



Purchased. 



4665. An imperfect skeleton of the Hapale Jacchm. Mus. South. 



