the Langurs inhnhitincj Ceylon. 



513 



particular species; the object of the foregoing remarks is 

 simply to point out that Ceylou offers a very favoural)le site 

 for the investigatiou of such problems. Its mammalian 

 fauna is extremely rich and varied, so that Nature has there 

 provided an abundance of control experiments. It is greatly 

 to be hoped that some resident in the northern half of the 

 island^ and another in the south-east will take up the matter 

 with Mr. Phillips, and by similar processes of intensive 

 collection and accurate observation gather materials from 

 which all the Cinghalese information may eventually be 

 read . 



In concluding this paper, brief mention may be made of 

 the two other Langurs inhabiting Ceylon. In my opinion, 

 P. ursinus, Blytli, of the highlands of Ceylon, is a perfectly 

 distinct species from P. vetttluSy being distinguished by its 

 much more robust build (weight to 20 lbs.), much longer 

 fur, different coloration (although traces of a silvery rump- 

 patch are more or less evident), and peculiar skull. With 

 regard to P. priamus^ of which a very long series, collected 

 by the Mammal Survey in the northern, eastern, and 

 southern parts of the island, is before me, the existence of a 

 crest of hair upon the vertex, as figured by Blanford ^, 

 is shown to be a natural and constant character. It will be 

 remembered that Anderson suspected this crest to be the 

 result of preparation. Whether the island form of jn-iamus 

 is distinct subspecifically from that inhabiting the south of 

 India will remain doubtful pending the arrival of further 

 Indian specimens — for at present we have only two examples 

 from the mainland. 



External measurements (in millimetres)^ 

 taken in flesh hy the collectors. 





Sex. 



No. 



Head& 

 body. 



Tail. 



Hind 

 foot. 



Ears. 



Wei-lit 

 (lb.). 



IHthecus vetulus vetnlus. 

















Anasigalla (W. W. i 

 A. Phillips) .... \ 



6 



662 



540 



730 



161 



38 



12^ 



2 





525 



750 



150 



31 



lU- 



Kalutara District j 

 (Colombo Mus.). 1 



i 



2 



5b 



5 



5a 



595 

 550 

 680 



710 

 700 

 690 



160 

 145 

 150 



32 



25 

 30 





r 



6 



60 



495 



712 



164 



33 





r. V. philh'psi. 1 



2 



63 



560 



770 



153 



36 





PaTiadura District ■<( 



2 



61 



530 



700 



152 



31 





(Colombo ISius.). 



2 



62 



490 



640 



153 



34 





I 



2 



59 



490 



700 



140 



32 





* Blanford, Mammalia, 1839, p. 32, fi--. 8. 



