24 SIMIIDyE. 



favour of the existence of a distinct species with a shorter tail, tufted at its ex- 

 tremity, and with a pelage more uniform, notably so in the posterior region of the 

 body. The specimen, however, is so young that I do not consider it to be suflacient 

 for the establishment of a species. I have therefore separated the references to it 

 as a foot-note.^ 



Blyth, writing in 1844,' stated that he was quite satisfied of the speciflcal iden- 

 tity of S. cepJialopierus and *S'. Johnii, as he had seen many monkeys intermediate 

 between these two, and from his previous remarks we are led to believe that he 

 regarded S. ceplialopterus as the type usually distinctive of the female and S. johnii 

 as that more characteristic of the male, but this view he appears to have after- 

 wards abandoned. 



There can be no doubt, however, that S. cephaloptents, S. ursinns, and 

 S. johnii are closely allied, and whether or not they are to be regarded as distinct 

 species or only local races of one and the same species depends solely on the 

 meaning attached to the term species. In separating these animals, which are 

 genetically extremely closely allied to each other and also to S. obscuriis, I have 

 followed the generally accepted estimate of the term species, in our days, but which 

 to my own mind has more the significance of a local race. It is, however, extremely 

 difiicult to draw the line; even in two such groups as the monkeys represented 

 by S. entellus and S. ceplialopterus (the first including under it S. schistaceus, 

 S. pileatus, and ^S*. priamus, and the second comprising S. tirsimis and S. johnii), 

 the types are separated from each other by well-marked characters, but when 

 S. hypoleuciis is studied, these two groups are seen to be linked together by it, as 

 that form partakes of the characters of the two representative species S. entellus 

 and S. ceplialopterus. 



Semnopithecus ursinus, Blyth. 



Presbi/tis ursimis, Blytli, Joimi. As. Soc. Beng. -vol. xx. 1851, p. 155; Cat. Mamm. As. Soe. Mus. 

 1863, p. 13; Kelaart, Faun. Zeylaii. 1852, p. 2. 



Somewhat larger than S. ceplialopterus. 



Fur profuse, nearly 3^ inches long in the adult, dark brown, passing into 

 black on the hands and feet and into slightly more rufous-brown on the head. 

 The sacral region and thighs are not grey either in the young or adult, the former 

 being coloured exactly like the latter, except that the head is more rufous. 

 Eyebrows long and black, and the beard, throat, chest and whiskers are white or 

 yellowish brown. 



1 CercopUlienis latiharlatus, GeofF. St.-Hil. Ann. du Mus. vol. six. 1 812, p. 94 ; Desmarest and Verej', Nouy. Diet. 

 d'Hist. Nat. vol. xv. 1817, p. 578; Kuhl. Beitr. zur Zool. 1820, p. 10; Desmarest, Mamm. 1820, p. 57 ;' Desmoulins! 

 Diet. Class d'Hist. Nat. vol. vii. 1825, p. 568 ; Lesson, Man. de Mamm. 1827, p. 35 ; Griffith, An. Kino-', vol. v. 1827' 

 p. 11 ; Simia latiharbata, V. Cuv. Diet, des So. Nat. vol. xx. 1821, p. 32 ; Semnopithecus latilarhatus, Martin, Charles- 

 worth's Mag. Nat. Hist, new ser. vol. ii. 1838, p. 439; Waterhouse, Cat. Mamm. Mus. Zool. Soc. Lend. 1838 

 2nd ed. p. 4; Is. GeofF. St.-Hil. Cat. Method des Mammif. 1851, p. 12; Dahlbom, Stud. Fam Zool Eeo- An ISSfi' 

 pp. 87, 89. "' 



2 i.e. 



