492 



WARO NAKAMARA : 



be said to stand almost on the verge of being an intermediate form 

 between the two subfamilies. In this regard, both Sisyra japonica and 

 Sisyrella nikkoana are of much interest, and more knowledge about 

 them than we have at present is exceedingly desirable. 



Krüger, in his recent work on Osmylidœ 1:> , has presented a new 

 classification of the family, dividing this into two divisions and six 

 subfamilies, mainly on the basis of venational characters. From the 

 point of view that in this group of insects the details of wing-venation, 

 such as are utilized by Krüger, are something much subject to in- 

 dividual variation and therefore can not be solely depended upon for 

 the systematic purpose, it seems to me that Banks' system before 

 mentioned is the more natural and the more acceptable in the present 

 state of our knowledge. 



Tribe Sisyrini Banks. 



Trans. Amer. Ent. Soc, xxxix, p. 211 (19 13). 



This tribe includes two genera which can be distinguished as 

 follows : — 



I Radial sector with three branches before stigma ....Sisyra. 



Genus Climacia is, so far as known, not represented in Japan. 



Sisyra Burmeister, Handb. Entom., ii, p. 975 (1839) ; Walker 

 {Hemer obius, part) Cat. Neuropt. Brit. Mus., ii, p. 296 (1853) î 

 Needham, N.Y.S. Mus., Bull. 86, p. 16 (1905); Banks, Proc. 

 Ent. Soc. Wash., xi, p. 76 (1909) ; Banks, Trans. Amer. Ent. 

 Soc, xxxix, p. 211 (191 3). 



It may be said that there exist sufficient differences between this 



sector with one branch before stigma 



Climacia. 



Genus Sisyra Burm. 



I) Beitrag zu einer Monographie der Neuropteren-Familie der Osmyliden. Stett. Ent. 

 Zeit., 73 Jg. und 74 Jg. (1912-13). 



