HYLO BATES. 



Hylobates agilis, F. Cuv. 



The Ounko, F. Cuv. Hist. Nat. des Mammif. June 1824, pis. vii, viii. 



Piikecus lar, Geoff. St.-Hil. Ann. du Mus. vol. xix. 1812, p. 88. 



Hylobates agilis, ¥. Cuv. Hist. Nat. des Mammif. Sept. 1821, pis. v, vi; F. Cuv. Diet, des Sc. Nat. 

 vol. xxxvi. ] 825, p. 288 ; Lesson, Man. de Mamm. 1827, p. 31 ; Temm. Monogr. de Mamm. vol. i. 

 1827, p. 13; Griffith, An. King. vol. v. 1827, p. 7 ; G. Cuv. Reg. An. nouv. dd. 1829, vol. i. 

 p. 90 ; Yarrell, Zool. Journ. vol. v. 1835, p. 137 ; Miiller, Tijdseh. voor Natuur. Gesch, en Phys. 

 vol. ii. 1835, p. 326; Waterhouse, Cat. Mamm. Mus. Zool. Soc. Lond. 1838, 2nd ed. p. 3 ; 

 Blyth, Joum. As. Soc. Beng. vol. x. 1841, p. 838 ; vol. xiii. 1844, p. 465 ; vol. xliv. 1875^ 

 ex. no. p. 3; Cat. Mamm. As. Soc. Mus. 1863, p. 5; Martin, Nat. Hist. Quad. 1841, pp. 416, 

 417, 425 (plate) ; Gray, Hand-list Mamm. B. M. 1843, p. 2; Miiller und Schlegel, Verhand. 

 1839-44, p. 48; Cantor, Journ. As. Soc. vol. xv. 1846, p. 173; Fry, Proc. Zool. Soc. 1846, 

 p. 11 ; Ann. & Mag. Nat. Hist. vol. xvii. 1846, p. 484 ; Is. Geoff. St.-Hil. Cat. Method, des 

 Mammif. 1851, p. 7; Gervais, Hist. Nat. des Mammif. 1854, p. 53 (figure) ; Dahlbom, Stud. 

 Zool. Fam. Reg. An. 1856, pp. 74, 78, pi. iii. fig. 9 (clavicle) ; Gray, Cat. Monkeys and 

 Lemurs, B. M. 1870, p. 12. 



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



Simla lar, Raffles, Trans. Linn. Soc. vol. xiii. 1822, p. 242 ; Vigors & Horsfield, Zool. Journ. vol. iv. 

 1828-29, p. 106; Fischer, Syn. Mamm. 1829 (in part), p. 12. 



Eylohaies lar, F. Cuv. Hist. Nat. des Mamm. June 1824, pis. 7, 8; Diet, des Sc. Nat. vol. xxxvi. 

 1825, p. 289; Lesson, Man. de Mamm. 1827, p. 30; Griffith, An. King. vol. v. 1827, p. 5; 

 Bory de St. Vincent, Diet. Class. d'Hist. Nat. vol. xii. 1827, p. 284 ; Is. Geoff. St.-Hil. Cours de 

 FHist. Nat. des Mammif 1829, p. 33 ; G. Cuv. Reg. An. nouv. ed. vol. i. 1829, p. 90 ; Schlegel, 

 Essai sur la Physion. des Serpens, Pt. Gen. 1837, p. 237. 



Hylobates variegalus, Temminck, Monogr. de Mamm. vol. i. 1827, p. xiii ; Miiller, Tijdschr. voor 

 Natuur. Gesch. en Phys. vol. ii. 1835, p. 326; Wagner, Schreber, Saugeth. Suppl. vol. i. 1840, 

 p. 74; Lesson, Sp. des Mammif. 1840, p. 52; S. Miiller, Verhandl. over de Zool. van den 

 Indisch. Arch. 1841, p. 15; Miiller, Verhandl. 1839-44, p. 47 ; Horsfield, Cat. Mamm. E. Ind. 

 Co. Mus. 1851, p. 3 ; Wagner, Schreber, Saugeth. Suppl. vol. v. 1855, p. 16. 



Hylobates raffiei, GeoS. ^t.-iiil. Cours de PHist. Nat. des Mammif. 1829, p. 34; Zool. du Voyage 

 de Belanger, 1834, p. 28; Compt. Rend. vol. xv. 1842, p. 716; Arch, du Mus. vol. ii. 1843, 

 p. 535 ; Miiller, Tijdschr. voor Natuur. Gesch. en Phys. vol. ii. 1835, p. 326 ; Miill. und Schlegel, 

 Verhandl. 1839-44, p. 48 ; Wagner, Schreber, Saugeth. Suppl. vol. i. 1840, p 73. 



Hylobates unJco, Lesson (in part) Sp. des Mammif. 1840, p. 53. 



Hylobates raffiesii, Is. Geoff. St.-Hil. Cat. Method, des Mammif. 1851, p. 8 ; Gervais, Hist. Nat. des 

 Mammif. 1854, p. 53 (fig. of head); Dahlbom, Stud. Zool. Fam. Reg. An. 1856, pp. 74, 80 ; 

 Gray, Cat. Monkeys and Lemurs, B. M. 1870, p. 11. 



The occiput, the back from immediately behind the shoulders, the flanks, the 

 hips, and the outer surfaces of the fore and hind limbs, pale yellow. The shoulders, 

 chest, and belly, and the inside of the limbs and feet, dark brown. The eysbrows 

 and whiskers pale greyish. A few reddish hairs in the region of the genitalia. 



Animals presenting the foregoing characters constitute the " TJngka puti," or 

 H. agilis, F. Cuv. ; but the Gibbons which are distinguished by the following parti- 

 culars, and which are known to the natives as " Ungka etam" {S. raffiesii, Geoff.), 

 appear to be only a dark variety of S. agilis. 



The type of this variety, which I have carefully compared with that of H. agilis, 



1 From the circumstance that Desmarest quotes F. Cuvier as the first zoologist to recognise this species, it is evident that 

 the " Mammologie," although dated 1820, did not appear hefore September 1821. 



B 



