170 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvm. 



ij. Anal area simpler, narrower, the hind margin of the wing near 

 the wing l)a8e straight or slightly conclave; one row of cells 

 between Cui and Cu.^ at their origin. 

 I: Nodus at a ])oint less than h the distance from wing base to 



stigma Echo. « 



l-k. N'odus plac-ed l)eyoiid the ])oint midway ))et\veen wing base 



and stigma ( 'liNKu-ohasis.c 



a. stigma wanting or only a false stigma present; radial sector 

 in hind wing strongly waved. (Subdivided by Forster as 

 follows:) 

 j. Four wings of male opaque. 



k. Cells of l)asal space for tlu^ most ]>art divided Matroiw 



kk. Only one or two cells of l)asal space divided Matronoiden 



jj. Front wings of male hyaline Neurohasis 



I. DEVADATTA ARGYOIDES ( De Selys). 



1 have .seen :i single t'enuile, collected ])y Doctor Abbott, KhoAV Sai 

 Dow Mountain, 1.0(H) feet, Trong. Lower Siam, January-Februaiy, 



Fig. 4.— Wing.s of female uevadatta akuyuides from Siam. 



1895). This specimen has the abdomen HI mm. in leng'th and the hind 

 wing 31. The species has been recorded from the Malay Peninsula 

 and Borneo. 



"Echo is known to me only from descriptions and figures, l)ut such differences 

 between it and Climncohasis appear to exist in the anal region and in the stigmas of 

 the males that, in so far as the two names have been, pul)lished, their separation 

 seems to me desirable, at least till a more critical study can be made. 



