ON THE OSMYLIN^ OF JAPAN. 



hind margin, the tubercle measuring only about 1 mm. in diameter 

 and about y mm. in height ; veins mostly pale but interrupted by 

 blackish ; subcosta and radius with strongly pronounced black and 

 pale alternate spaces ; pterostigma light brown, with thickened dark- 

 brown veins on each side. 



All the costal cross-veins simple in my specimens ; radial sector 

 with 9-12 branches; cross- veins on the disk very few in number, 

 mostly marked with fuscous. 



Hindwing with brown pterostigma ; neuration nearly entirely pale 

 whitish, especially in inner marginal area ; discal cross-veins mostly 

 fuscous, very small parts of principal veins likewise fuscous. 

 Measurements : 



Length of body 9 — 11 mm. 



„ „ forewing 17—19 » 



Width of forewing 6 — 6.5 „ 



Length of hindwing 16 — 17 ,, 



Hab. : A large number of specimens of this species were received 

 by me from the following localities : 



Mt. Kinkwa near Gifu, Mr. S. Yamamura coll. 

 Prov. Harima, Mr. S. Iguchi coll. 

 Tsuchiura, Prov. Hitachi, Mr. S. Kimura coll. 

 Kyoto and Yoshino (Prov. Yamato), Mr. A. Nohira coll. 

 Alikang, Formosa, Mr. H. Sauter coll. 15 

 There is also a female specimen captured at Shimpukuji, Prov. 

 Mino, in the collection of the Nawa Entomological Laboratory, 

 Gifu. 



Remark : Short and imperfect as is the original description given 

 by Walker, the specimens on hand agree with it so well that I cannot 

 help identifying them with the species. If this identification be correct, 

 I think Gerstaecker's Osmylus modestus from Java should also be 



1) This specimen I owe to the kindness of Mr. Petersen of Denmark. 



