Dr. D, G. Elliot's ' Review of the Primates' 395 



Misled by the unfortunate geographical term " Lower 

 Siam/' he has described another " species," F. capitalis 

 (Vol. II. p. 235), as inhabiting Trong and Telibun Island. 



Trong, or rather Trang, is a district on the mainland of 

 tlie Peninsula, about 50 miles north of Langkawi, and 

 Telibon an island off its coast^ separated by an exceedingly 

 shallow channel. 



According to our author, therefore, despite the fact that 

 (pp. iv, V, Preface) "intermediates between what are re- 

 corded as species have rarely been found in this order," and 

 that '' on the mainland where there is no evidence of a 

 gradation from one form to another subspecies may not be 

 accepted," we have the extremely curious case of discon- 

 tinuous distribution of Macacus irus * separated in a 

 continuous laud-area by an intrusive form, P. capitalis, which 

 presumably does not intergrade, as it is named binomially. 



There is the further case of discontinuous distribution 

 of M. fascicularis met with on Sumatra and the islands of 

 Terutau and Langkawi. 



In reality, the whole treatment of the group forms a most 

 admirable example of the danger of working with insufficient 

 material and with imperfect knowledge of the geography of 

 the area dealt with. 



Genus Pygathrix [Presbytis or Semnopithecus) . 



Dr. Elliot has thrown the section containing the species 

 lately known as femoralis {nomen nudum) into hopeless 

 confusion. 



The specimen on which the name femoralis was founded 

 was originally obtained somewhere in Sumatra by Rafllcs, 

 though in his paper in Trans. Linn. Soc. vol. xiii. (1822), 

 are given, evidently in error, the localities Pulau Penang 

 and Singapore. Later, Miiller and Schlegel described, and 

 figured as Semtwpithecus sumatrana, a form from IVlouiit 

 Ophirin the Padang Highlands, W. Sumatra (subsequently, 

 however, referred by the latter to S. femoralis) f, which is 

 clearlydistitigiiishable from the form inhabiting the Peninsula 

 and adjacent islands, which is P. neylecla (Schlegel) |. 



The i5ornean representative is described by Miiller and 

 Schlegel as P. chrysomelas. 



In dealing with what he calls P. femoralis (Iloi'sf.) 



• We ourselves do not possess any examples of the Common Macaque 

 from liurma and Teuasserim, and are tlurefore not in a position to deny 

 the statement that the M. irus occurs there. 



t Mus Pays-Biis, p. 457. 



I Op. cit. p. 47. 



