Dr. B. G. Elliot's ' Beview of the Primates.' 397 



separated from those described as Pres. obscura carbo by 

 Messrs. Thomas and Wroughtou (Ann. & Mag. Nat. Hist, 

 (8) iv. p. 534, 190'J) from Langkawi and Terutau. 



The measnremeuts given by Dr. Elliot of the type of 

 P. carbo (Vol. III. p. 54) are:— ^' Total length 1380 ; tail 

 800 ; hind foot 125.^^ Those taken by the collector in the 

 flesh Avere:— Total length 1240 ; tail 740 ; hind foot 152. 

 The emendation is not in the direction of accnracy, as no 

 full-grown monkey in this group has so small a foot as 

 indicated by Dr. Elliot. 



Pyyalkrix nubifjena, Elliot (Vol. III. p. 55), is a pure 

 synonym of Pygathrix siamensis, Miiller & Schlegel (Vol. 111. 

 p. 59). Schlegel, in his monograph on the monkeys (Mus. 

 Pays-Bas, 187(3, p. 38), expressly states that the types were 

 collected by Diard in Malacca, and the locality Siam was 

 ascribed to them in error, as it a'so was to certain specimens 

 oi' Pi/(/athrix obscura obtained by the same collector (p. 49). 

 The locality " Keka," given by Dr. Elliot for his type of 

 P. nubigena, is merely the native name of the species^ as 

 noted by Dr. Cantor on the label. The specimen in the 

 British Museum ascribed to Pygathrix siamensis by Elliot 

 (Vol. III. p. GO) from Tukamen, Siam, collected by Flower, is 

 really P. gcrmaini (Milne-Edwards) (Vol. III. p. 82), and 

 field-notes on specimens from the same locality by the same 

 collector are inserted under this species. 



Pygathrix rhionis (Vol. III. p. 58; has nothing to do with 

 P. obscura as stated, but is closely allied to P. siamensis and 

 P. dileda, and its affinities are correctly given by Miller in 

 the original descrii)tion. 



Pygathrix cristata (Vol. III. p. 79) is a common monkcv 

 in suitable localities along the western coast oi: the MalaV 

 Peninsula, and is not confined to Sumatra as stated. 



Dr. Elliot cites Muleyit in Tenasserim as a locality for 

 Pygathrix obscura (Vol. III. p. 53), and then describes' the 

 sjjeciuiens which are the authority for this locality as a new 

 species, Pygathrix crepuscala (A'ol. HI. p. 84), which may 

 be valid if regarded as a subspecies of P. obscura. 



The type of Pygathrix crepuscula wroughtoni (Vol. III. 

 p. 85), which one of us has examined, is practically identical 

 with specimens of P. obscura from the Patani coast, N.E. 

 Malay Peninsula. Judging from the dimensious, it is almost 

 ccrtamly a female, and should not have been described, except 

 on a reasonably large series. 



Passing to tlie Ilylobatidre, or Gibbons, we may note that 

 the Malay Peninsula is omitted from the distribution of 

 //. agilis (Vol. III. p. IGO), though its occurrence has been 



