152 HYLOBATES 



1842. /. Geoffroy, in Comptes Rendus. 



Hylobates lar redescribed as H. entelloides. (Yellowish 

 white variety). 



1851. /. Geoffroy St. Hilaire, Catalogue des Primates. 



In this work the following species are recorded : H. leuciscus, 

 wrongly attributed to Schreber ; H. agilis ; H. miilleri = H. con- 

 color; H. raMesi — H. agilis; H. lar; H. hoolock; H. en- 

 telloides = H. lar; and H. syndactylus = Symphalangus 



SYNDACTYLUS. 



1853. /. Geoffroy St. Hilaire, in Comptes Rendus. 

 Hylobates funereus first described. 



1856. Dahlbom, Studies Zoologica Familias Regiis Animalis Natu- 

 rales. 



A synopsis of the species of Hylobates is here given. An 

 important character is considered to be the presence or absence 

 of a tubercle on the clavicle, and species recognized accordingly. 

 This tubercle, however, indicates a more or less powerful 

 attachment for the muscle, and is not a structural character 

 nor one bestowing specific value, but is the result of great 

 activity or effort on the part of the individual. The species 

 recognized are H. leuciscus ; H. miilleri = H. concolor ; H. 

 HOOLOCK ; H. entelloides = H. lar ; H. lar ; H. agilis ; H. 

 rafHesi = H. agilis. 



1861. Gray, in Proceedings of the Zoological Society of London. 

 Hylobates pileatus first described. 



1862. Reichenbach, Die Vollstdndigste Naturgeschichte der Affen. 

 The genus of Hylobates in this work is divided into two sub- 

 genera A. Siamanga with S. syndactylus ; and B. Hylobates 

 with H. lar; H. hoolock; H. rafHesi = H. agilis; H. leu- 

 cogenys ; H. albimanus — H. lar ; H. miilleri = H. concolor ; 

 H. agilis ; H. entelloides = H. agilis ; H. choromandus = H. 

 hoolock ; H. funereus ; H. leuciscus ; H. pileatus. 



1870. Swinhoe, in Proceedings of the Zoological Society of London. 

 Hylobates nasutus renamed H. pileatus. 



1870. Gray, Catalogue of Monkeys, Lemurs and Fruit-eating Bats, 

 in Collection of the British Museum. 



In this list the species of Hylobates are divided into two 

 groups : I. Hands and feet white ; nose rather elongate ; and 

 II. Hands and feet like the rest of body. In the first of these 

 are placed, H. lar; and H. pileatus; and in the second, H. 



