TRANSACTIONS 



ENTOMOLOGICAL SOCIETY 



LONDON 



For the Year 1^)00. 



I. Vescripfions of ncvi fiprrirs of Oriental Rhyacophilse. 

 By Kenneth J. Morton, F.E.S. 



[Rrad Decomber 6th, 1899.] 



Plate I. 



The following descriptions of Oriental BhyacoijhilcV, are 

 based on material in the rich collection of Mr. R. 

 McLachlan. The insects are principally from India, and 

 as far as that region is concerned, the descriptions practi- 

 cally break new ground. Unfortunately no biological notes 

 are available, the insects being, almost entirely, captures 

 by native collectors. Two new species from Japan are 

 included. 



What the water systems of tlie great mountain ranges in 

 the Indian Region (and the same may be said of the Asiatic 

 Continent as a whole) will eventually produce in the way 

 of Ilhyaco2)liihVy it is impossible to conjecture ; but if the 

 number of species is in proportions anything like those 

 found in Europe, it will be enormous. 



In Europe, there is a certain amount of analogy between 

 this genus and the Rhopalocerous genus JSrehia. Both are 

 characteristic of mountainous regions ; and the species are 

 so numerous and so closely allied that even expert 



trans, ENT. see. LONP. 1900. — PART I, (APRIL) 1 



