MONKEYS OF THE OLD WORLD. 343 



241, and 242,) represent the features, and the position of the nostrils, 

 characteristic of each family ; and, as far as these parts are concerned, 

 convey a clear idea of the distinctions between them. 



240 241 242 



Illustration of the Illustration of the Illustration of the 



family, Shniadae, or Monkeys family, Cebidae, or Monkeys family, Lemuridae, or 



of the Old World. of the New World. Lemurs. 



FAMILY, SIMIAD.E; OR, MONKEYS OF THE OLD WORLD. 



FORE-HANDS with a thumb (except where rudimentary), capable of 

 antagonizing more or less thoroughly with the fingers. 



DENTITION anthropoid. Incisors, \ ; canines, {5i ; molars, bicuspid, 

 g ; true molars, g ; = 32. 



NOSTRILS divided by a narrow septum, and converging obliquely 

 downward. 



ISCHIATIC CALLOSITIES generally present, but not absolutely universal. 



CHEEK-POUCHES often present, but not a universal character. 



MEMBRANEOUS LARYNGAL SACCULI, not a universal character. 



The Simiadae are divided between the hotter regions of Asia and 

 Africa ; each of these sections of the Old World having its own peculiar 

 genera. It is doubtful whether any species is indigenous in Madagas- 

 car,* near as it is to the shore of Africa ; the place of the Simiadae 

 appears to be occupied, in that island, by the Lemurs, which tenant its 

 forests in their stead : in the island of Fernando Po, however, they are 

 very numerous ; and, as respects India, the islands are even more de- 

 cidedly the stronghold and nursery of the Asiatic Simiadae than is the 

 continent. Borneo and Sumatra may be termed their metropolis, and 

 " dilecta Cypros." 



From the Indian Islands the Simiadae do not extend to Australia ; 



* One species (Simia Aygula, Linn,), is said, by M. Julien Desjardins, to exist in the Island of 

 Mauritius (see Proc. Zool. Soc. 1831, p. 45) ; but, like all the Mammalia of that island, it is, 

 doubtless, a naturalized importation. Two examples of a Monkey (Cercopithecus albogularis) have 

 been brought from Madagascar, but it is not clear that they were natives of that island. 



