112 NAS ALIS 
Schreb., Saugth. Suppl., V, 1855, p. 35; Selenka, Stud. Entw. 
Tier. Menschens-Aff., 1900, Achtes Heft, pp. 189-191, figs. 
25, 26, and A to G. 
Nasalis recurvus Vig. and Horsf., Zool. Journ., IV, 1828-29, p. 
109, fig. juv.; Martin, Proc. Zool. Soc. Lond., 1837, p. 71. 
Semnopithecus larvatus Fisch., Syn. Mamm., 1829, p. 16; Mar- 
tin, Mammif. Anim., 1841, p. 453, figs. 279, 280-282. 
Rhynochopithecus (!) nasalis Dahlb., Stud. Zool. Fam. Reg. 
Anim. Nat.,-fase,1, \1856,)p..93, tab alk. 
Semnopithecus (Nasalis) larvatus Anders., Zool. Exped. Yunnan, 
1878, p. 42; Id. Cat. Mamm. Ind. Mus. Calc., Pt. I, 1881, 
P.O. 
Semnopithecus nasicus Pryor, Zoologist, 1881, p. 398; Jent., Notes 
Leyd. Mus., 1897, p. 35. 
PROBOSCIS MONKEY. 
Type locality. Borneo. 
Geogr. Distr. Island of Borneo. 
Color. Top of head light ferruginous; back of neck, back, sides, 
arms to elbow cinnamon rufous; sides of head and neck, chin, throat, 
and under parts bright pinkish buff; forearms buffy white; rump 
white; thighs pale reddish, grading into buff tinged with red on legs; 
tail white, tip black; face and nose flesh color; hands and feet buffy 
white. 
Measurements. Skull: total length, 135; occipito-nasal length, 
111; Hensel, 96; intertemporal width, 45; zygomatic width, 95 ; median 
length of nasals, 24; palatal length, 45; length of upper molar series, 
33; length of mandible, 94; length of lower molar series, 45.5. 
This extraordinary monkey is restricted to the Island of Borneo, 
where it dwells in the vast forests growing in or near water. Very 
little is known of its habits as it has only been met with by the few 
travellers who have seen it as they passed along the rivers. It is 
strictly arboreal and goes in small troops, and is known to the natives 
as Blanda or Rasong. There seems to be but one species of this 
monkey, at all events, among the considerable number of examples I 
have examined at various times, there existed.a constant uniformity 
of color and markings. It is true that a Mr. Pryor, (1. c.) writes of a 
monkey he obtained on the Island of Balhalla, near Sandaken Bay, 
which he described as resembling a ‘picture’ of PyGATHRIX NEMUS, 
but which had a nose as large as the Proboscis monkey. It was “three 
feet eight inches high, about as big as the smaller species (?) of 
orang-outan, strongly built, and with a determined expression.” I have 
