140 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



PYGATHRIX FRONTATA (Miiller). 



1838-39. Semnopithecusfrontatus Muller, Tijdschr. Natuur. Gesch. Physiol., 



vol. 5, p. 136. 

 1839-44. Semnopithecus frontatus Muller and Schlegel, Verh. Nat. Gesh. 



Nederl. Bezitt., pp. 62 and 78, pi. 8, figs. 1-4. 



Ten specimens of this rare monkey were collected by Doctor Abbott 

 in southeastern Borneo, eight at Klumpang Bay, and two at Balik 

 Papan Bay. 



(For measurements see table, p. 141.) 



Generally common. — W. L. A. 



PYGATHRIX CRISTATA (Raffles). 



1822. Simia cristata Raffles, Trans. Linn. Soc. London, vol. 13, p. 244. Type- 

 locality, Sumatra. 



1907. Presbytis cristata, Lyon, Proc. U. S. Nat. Mus., vol. 33, p. 568, December 27, 

 1907. Kapuas River specimens. 



In addition to two specimens of Presbytis cristata taken by Doctor 

 Abbott in the Kapuas River region, an adult female and her young 

 were taken at the Pasir River, southeastern Borneo. 

 (For measurements of the specimens see table, p. 141.) 

 In point of coloration the young specimen bears no resemblance 

 whatever to its parent. The hairs are everywhere ochraceous in 

 color, with the exception of a fringe of long blackish hairs over the 

 forehead. A good illustration of the young may be seen in Verhan- 

 delingen over de Natuurlijke Geschiedenis der Nederlandsche over- 

 zeesche Bezittingen, plate 12, fig. 1. 



PYGATHRIX CHRYSOMELAS (Miiller). 



1838-39. Semnopithecus chrysomelas Muller, Tijdschr. Natuurl. Gesch. Physiol, 

 vol. 5, p. 138. Type-locality, Pontianak, western Borneo. 



1907. Presbytis chrysomelas, Lyon, Proc. U. S. Nat. Mus., vol. 33, p. 567, Decem- 

 ber 27, 1907. 



Nine specimens from Pontianak, and the lower Landak and Kapuas 

 rivers. None were collected by Doctor Abbott in southwestern or 

 southeastern Borneo. 



