ON THE HEM ERODI I NAE OF JAPAN. 



t9 



venulis omnibus simplicibus, paucis. Radius cum subcosta una venula 

 basilari conjunctus. In campo radiali duae venulae. Sector radii quater 

 furcatus, ramis 2 venulis prope radicem junctis. Procubitus ramo inferiore 

 flexuoso, duplici venula cubito juncto. Cubitus flexuosus, cum sectore 

 venula prope basim junctus. Ala posterior area costali et subcostali 

 venulis libera, nisi ad stigma ; sectore radii ter furcato, cum radio una 

 venula conjuncto. Procubitus ter successive furcatus, ramo anteriore cum 

 sectore radii, furea posterioris cum cubito venula conjuncto. Cubitus ramis 

 posterioribus instructus. 



" Longit. corpor. 3 mm., 1. alae anter. 6, 5 mm., 1. alae poster. 6 mm. 



" Patrie : Nippon moyen, env. de Tokio et Alpes de Nikko. J. 

 Harmand, 1901 (Mus. de Paris)." (From Navâs). 



Tribe HemerobÜni Latreille, restricted. 



Of this tribe I recognize the following seven genera as occurring in 

 Japan : 



1. No recurrent vein at base of forewing ... ., 2. 



A recurrent vein at base of forewing 3. 



2. Median and cubitus coalesce in both wings Micromus. 



Median and cubitus not coalesce at least in hind 



wing Eumicromus. 



3. Forewing with two radial sectors ; no series of cross- 

 veins in hindwing 4. 



Forewing with more than three radial sectors ; two 



series of crossveins in hindwing 5. 



4. Forewing with at least three preapical crossveins. Symplierobms. 

 Forewing with but one preapical crossvein Notiobicl/a. 



5. Forewing with more than ten radial sectors Oedobius. 



■ Forewing with less than five radial sectors 6. 



6. Forewing with three series of gradate veinlets. ... Ninguta. 



Forewing with two series of gradate veinlets. ... Hemerobius. 



Beside the seven genera tabulated above, some seven or eight more 



