ON THE OSMYLIN/E OF JAPAN. 



499 



Length of forevving 13 mm. 



„ hindwing 1 1.5 „ 



A single female(?) specimen captured on Mt. Iwawaki, Prov. Kii, 

 Aug. 17th, 191 1, by Mr. Isshiki, is in the collection of Mr. H. Okamoto. 

 Further, a male specimen, captured by Mr. A. Nohira at Minomo 

 near Osaka, is in my collection. 



Remark : This species closely resembles Berotha {Isoscclipteroti) 

 puticticollis, which was described by Naväs :) from Formosa, but can at 

 once be distinguished from this by the markings on body, especially 

 those on head, prothorax and wing, by wing-venation, etc. 



Tribe Osmylini Banks, s. emend. 

 Osmylini Banks, Trans. Amer. Ent. Soc, xxxix, p. 211 (191 3). 

 Nymphini Banks, I.e. 



Banks has separated Osmylini and Nymphini as distinct tribes, 

 but I regard this distinction to be too arbitrary for acceptance, inas- 

 much as there exist between them, so far as I can see, no sufficient 

 difference by which it could be held up. The presence or absence of 

 ocelli, utilized by many other authors for their separation, proves to 

 be of no avail, since there exist under Nymphini forms with ocelli as 

 well as those that are without them. It is therefore obvious that the 

 system of these insects as it now stands, is in much confusion, and 

 hence Osmylini is here put foreward provisionally in the sense which 

 covers Nymphini also. Then the tribe may be defined as follows : 



Ocelli present or absent ; in the latter case there exist tubercles 

 instead. Wings with numerous cross-veins besides those of gradate 

 series ; all cross- veins beset with hairs ; in forevving media and cubitus 

 have each one branch runing parallel to them for a considerable dis- 

 tance in forewing ; in hindwing cubital branch not always parallel 

 to cubitus ; no recurrent vein at base of forewing. 



1) Névroptères nouveaux de l'extrême Orient. Rev. Russ. d'Entom., xi, p. 112, fig. 2 

 <I9II). 



