AY LOSBAT ES 155 
was obtained, proving conclusively, that the numerous variations com- 
mon to practically all the accepted species, have no specific value, but 
are merely individual vagarisms, to be regarded as a curious fact, but 
one not worthy of any serious scientific consideration. 
HYLOBATES NASUTUS Kiinckel. 
Hylobates nasutus Kiinck., Scien. Nat., 1884, pp. 86-89, fig. desc. ; 
A. Milne-Edw., Le Natural., 1884, p. 497. 
Hylobates pileatus Swinh., Proc. Zool. Soc. Lond., 1870, p. 224, 
(nec Gray). 
Hylobates hainanus Thos., Ann. Mag. Nat. Hist., IX, 6th Ser., 
1892, p. 145; Sclat., Proc. Zool. Soc. Lond., 1892, p. 541; 
Forbes, Handb. Primates, II, 1894, p. 164; Pocock, Proc. 
Zool. Soc. Lond., 1905, p. 160, pl. V. 
Type locality. Tonkin (Harmond), Menagerie of the Jardin des 
Plantes, Paris. Milne-Edwards’ specimen in Paris Museum. The 
whereabouts of Kiinckel’s type is unknown. 
Geogr. Distr. Island of Hainan. Cochin China. 
Color. Everywhere black, body and limbs. 
Measurements. Size of body and limbs about equal to H. Hoo- 
Lock. No skull available. 
Milne-Edwards’ type of this species was a young animal brought 
from Tonkin by Dr. Harmond and at one time was living in the 
Menagerie in the Jardin des Plantes, Paris. Like its relatives this 
species has its varieties, and while the typical style is wholly black, 
entirely white individuals are known, and doubtless if a series of 
examples were procured, all styles between the wholly black or 
entirely white dress would be seen. Milne-Edwards’ type is preserved 
in alcohol. The entire top of the head is now red, and there is a 
reddish patch on the breast. This discoloration is probably caused by 
the spirit; the rest of the pelage however is jet black. The individual 
lived for some time in the Menagerie of the Jardin des Plantes, Paris. 
Two individuals of this species were received by the Zoological Society 
of London from Hainan in the jet black pelage, but when their coats 
were shed, one, the female, gradually assumed a white or silvery gray 
dress as is shown in the plate published in the Society’s Proceedings, 
thus presenting a striking and an unanswerable evidence of the muta- 
bility of the coloring in the coats of members of this genus, and its 
worthlessness as a specific character, when the general hue of the dress 
is considered. Some characteristics may be regarded as perhaps per- 
