ON THE OSMYLlNvE OF JAPAN. 495 



Sisyra ozenumana n. sp. 



Head black, swollen above ; face fuscous black ; mouth-parts 

 ochraceous ; antennae deep black, more or less fuscous beyond the 

 middle, a few terminal joints blackish. 



Prothorax fuscous, covered with fine hairs ; meso- and metathorax 

 ochraceous fuscous, especially so on the back, somewhat paler below ; 

 mesothorax much swollen above. 



Legs pale yellow; foreleg slightly spotted with darkish; terminal 

 joint of tarsi darker in all the legs. 



Abdomen brown ; terminal segments lost. 



Wings hyaline and uniformly light brown ; veins mostly pale, 

 subcosta suffused with light fuscous, other principal veins somewhat 

 dark towards base. 



Forewing with 8 costal cross-veins, of which the last one is 

 widely separated from the others : radial sector with 3 branches and 

 connected with radius at three points ; a very faint cross-vein between 

 the ist branch and base of the 2nd branch of the sector ; media 

 dichotomousely forked three times, the anterior fork with one branch 

 more than the posterior fork ; length of cubito-anal cell equals nearly 

 three times the width. 



Hindwing with about seven costal cross-veins, all in the basal parts. 



Measurements : 



Length of body ? 



,, „ antenna; 3 mm. 



„ „ forewing 5 „ 



Width of „ 2.4 „ 



Length of hindwing 4 „ 



A single specimen (sex undeterminable) obtained by the author 

 on the shore of Lake Oze, Pro v. Közuke, Aug. 1, 191 3. 



