HYLOBATES. 3 1 



8. Hylobates agilis. 



The Ounko, F. Cuv., Eist. Nat. des Mammif. Juin 1824, livr"' 



xlii & xliii. 

 Hylobates agilis, F. Cuv., Hist. Nat. des Mammif. Sept. 1821, livr"' 



xxxii & xxxiii ; Blyth, Cat. Mamm. As. Soc. Mus. 1863, p. 5 ; 



Anderson, Anat. cf- Zool. Itesch. 1878, p. 9. 

 Simia lar, Maffles, Trans. Linn. Soc. vol. xiii, 1822, p. 242. 

 Pithecus agilis, Desmarest, Mamm., 1820, p. 532. 

 Hylobates rafflesii, Is. Geoff. St.-Mil., Cat. Mithod. des Mammif. 



1851, p. 8. " 



Hylobates variegatus, Temminck, Monogr. de Mamm. t. i., 1827, 



p. xiii. 

 Hylobates rafflei, Geoff. St.-Hil,, Cours de I'Sist. Nat. des Mammif, 



7°' le?on 1829, p. 34. 

 Hylobates unko, Temm. (partim), Sp. des Mammif. 1840, p. 53. 

 Hylobates concolor, Miiller, Verhandl. over de Zool. Ind. ArcMpel, 



1841, p. 48. 

 Hylobates miilleri, Martin. Nat. Hist. Quadr. 1841, p. 444 ; Anderson, 



Anat. 4- Zool. Beseh., 1878, p. 8. 

 Hylobates funereus, Is. Geoff. St.-Hil., Compt. Rend. t. xxxi, Dec. 



1850, p. 874, 

 Hylobates pileatus. Gray, Proc. Zool. Soc. Lond., 1861, p. 136, pi. xxi ; 



Anderson, Anat. Sf Zool. Beseh. Sfc., 1878, p. 6. 



Hah. Sumatra^ Siam, Cochin China, BorneOj and Sulu 

 Islands. 



A careful reconsideration of the various gibbons to which 

 the terms above given have been applied leads me to regard 

 them all as local races and varieties of one and' the same species. 



8a. The skin of a young male : brown^ paler on the lumbar 

 region, and on the outside of the hind limbs ; hands and feet 

 black ; chest pale yellowish-brown ; supercilium white ; no 

 white on the whiskers. Presented by W, Butledge, Esq., 

 6th September 1869. 



b. A stulfed young female : brown, passing into yellowish on 

 the lumbar region, and to pale brown on the outside of the 

 thighs ; top of the head brown, parietal and occipital regions 

 pale greyish-brown; supercilium and whiskers white; chest 

 and inside of limbs black ; hands and feet blackish brown. 

 Presented by W. Rutledge, Esq., 16th January 1870. 



c. A stuffed young male: the same as the preceding. 

 Presented by W. Rutledge, Esq., 8th August 1871. 



d. A stuffed young male : same as h. Presented by W. 

 Rutledge, Esq., 27th August 1871. 



e. A stuffed young male and its skull : the same as h. 

 Presented by W. Rutledge, Esq., 13th July 1875. 



