ON THE OSMYLIN/E OF JAPAN. 



493 



genus and Climacia to base generic distinction upon. In Sisyra the 

 number of branches from radial sector is constantly well fixed ; 

 moreover, it never shows an outer gradate vein, while Climacia always 

 has this in some number. Hitherto no Sisyra has been recorded 

 from Japan, but I have discovered in Hondo three species, all which 

 seem to be new to science. They may be distinguished as follows : — 



1. Anterior margin of hind stigmatic region markedly produced ; 

 two of the costal cross-veins separated from the others in 

 forewing ; subcosta and radius rather imperfectly united .... 



S. japonica. 



Anterior margin of hind stigmatic region not produced ; none 



or only one of the costal cross-veins separated in forewing ; 

 subcosta and radius perfectly united 2. 



2. Subcosta of forewing darkish ; median and cubital veins not 

 connected ; head black S. ozenuinana. 



Subcosta pale ; median and cubital veins connected by a 



cross- vein ; head brown S. Yamamurœ. 



Sisyra japonica n. sp. Fig. i. 



Head fuscous black, much swollen above ; upper part of face 

 black, lower half including mouth-parts pale yellow ; palpi pale, the 

 last joint of maxillary palpi very long and spindle-shaped, that of 

 labial palpi nearly triangular in shape with numerous fine hairs on 

 top and sides ; antennae black at base, terminal half ochraceous 

 yellow. 



Prothorax pale yellow, fuscous yellow above, the anterior margin 

 a little produced and spotted with fuscous. Meso- and metathorax 

 also fuscous yellow, each segment suffused with brown at margin, 

 scutella yellowish. 



Legs uniformly pale, densely haired, only the last tarsal joint and 

 claw brownish or testaceous. 



Abdomen uniformly pale yellow, with a bushy bundle of pale 



