216 



AN APPEAL FOR LANGURS. 



The following appeal is made to all those interested in the 

 Mammalian fauna of 8iam, for specimens, and notes on the habits, of 

 the Langur Monkey's. The Siamese Langurs are very little known 

 and the mal"erial at present to hand is not sufficient to permit of a 

 thorough understanding of the relations existing between the various; 

 forms. 



In the preparation of skins it should be remembered that the 

 measurements and sex of each animal should be recorded on the label. 

 The usual body measurements are (1) from the tip of the nose to the 

 base of the tail ; (2) from the base of the tail to the tip of same — not 

 including any terminal tuft of hairs ; and (3) the length of the hind 

 foot. 



The skulls of the various specimens should all be labelled so 

 that they can be identified with the skins that belong to them ; for this 

 purpose the collector will find it easiest to number his specimens and 

 never to repeat the same numbers in any subsequent collection. The 

 skulls are best if sent home with the dried meat still on, as this 

 prevents damage and loss of teeth. The localities of the specimens 

 should be recorded on the label in such a manner that those less 

 intimately acquainted with the local geography may be able to locate 

 the various places. The altitude and date of capture are also items 

 of considerable importance which should be entered upon the skin 

 label. 



As far as possible specimens of both sexes should be obtained, 

 together with young individuals — so that any sexual or juvenile 

 pelage-difi'erences may be observed. 



It is hoped shortly to publish an extensive monograph on the 

 subject of the Langur Monkeys. 



The Indian groups are now, thanks to the Bom))ay Natural 

 History Society's mammal survey, well worked out ; to bring our 

 knowledge concerning the Siamese forms up to the same standard we 

 require a much more complwte series than is now available for 

 examination. 



GUY DOLLMAN, 



British Museum ( Natural Historij ) . 

 October 23, 1014. 



