HVLO BATES ISS 



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 Kunckel. 



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, 



(nee 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, pi. V. 

 Type locality. Tonkin (Harmond), Menagerie of the Jardin des 

 Plantes, Paris. Milne-Edwards' specimen in Paris Museum. The 

 whereabouts of Kunckel'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. hoc- 

 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- 



