HYLOBATES 171 
taken from the supposed type in the British Museum, a mounted 
specimen, as none marked Type was found. Other specimens in the 
collection, have black only on the crown, and from lower part of 
breast to end of abdomen; or on whiskers, spot on throat, chest and 
abdomen, all the rest of the pelage being brownish or pinkish buff 
above, and yellowish white on under parts; but no matter how much 
the black may have disappeared from the other parts of the body, the 
belly is apparently always of that color. 
“At Paknam Kabin,” says Flower, (1. c.) “in Siam, in 1897, there 
was a pet gibbon of the variety pileatus, said to have been caught in 
the neighborhood. Its color was buffy white, except the hair on the 
top of the head, which was black, and on its chest which was very 
dark gray. The skin of the face, and palms of the hands and soles of 
the feet were black.” 
HYLOBATES CONCOLOR (Harlan). 
Simia concolor Harlan, Journ. Acad. Nat. Scien. Phil., V, Pt. I, 
1827, p. 229, pls. IX, X, 9. juv., read 17 Oct. 1826. 
Hylobates concolor Schleg., Essai Phys. Serp., Pt. Gén., 1837, p. 
237 ; Wagn., Schreb., Saugth. Suppl., I, 1840, p. 79; V, 1855, 
p. 17, (Part.) ; Mill, Verhandl., 1841, p. 48; Blyth, Journ. 
Asiat. Soc. Beng., X, 1841, p. 417; Schinz, Syn. Mamm., I, 
1844, p. 31; Fry, Proc. Zool. Soc. Lond., 1846, p. 15: Id. 
Ann. Mag. Nat. Hist., XVII, Ist Ser., 1846, p. 487; Temm., 
Hist. Nat. Mamm., 1854, p. 55, fig.; Dahlb., Stud. Zool. Fam. 
Reg. Anim. Nat., fasc. I, 1856, p. 74; Anders., Zool. Res. 
Exped. Yunnan, 1878, p. 11; Everett, Proc. Zool. Soc. Lond., 
1893, p. 493; Selenka, Stud. Entw. Tier. Menschen Aff., 
Achtes Heft, pp. 180, 181, figs. 14-18. 
Hylobates harlani Less., Bull. Scien. Nat., XIII, 1827, p. 111. 
Hylobates miilleri Martin, Mammif. Anim., 1841, p. 444; Temm., 
Coup d’ceil Possess. Neerl., III, 1849, p. 403; I. Geoff., Cat. 
Primates, 1851, p. 7; Id. Archiv. Mus., V, 1852, p. 534; 
Dahlb., Stud. Zool. Fam. Reg. Anim. Natur., 1836, p. 73; 
Reichenb., Vollstand. Naturg. Affen, 1862, p. 172, figs. 430- 
431; Thos., Proc. Zool. Soc. Lond., 1892, p. 227; Everett, 
Proc. Zool. Soc. Lond., 1893, p. 493; Lyon, Proc. U. S. Nat. 
Mus., XL, 1911, p. 142. ; 
Hylobates miilleri albibarbis Lyon, Proc. U. S. Nat. Mus., 1911, 
p. 142. 
