ON THE OSMYLIN/E OF JAPAN. 



out marking except a few spots on pterostigma and very faintly clouded 



spaces along inner margin. 

 Measurements : 



Length of body 14 — 15 mm. 



„ forewing 24 — 26 „ 



Width of „ 9 — 10 „ 



Length of hindvving 22 — 24 „ 



A male specimen captured by Mr. A. Nohira on Mt. Atago, 

 Kyoto, May ist '12, and two female specimens captured by Mr. T. 

 Takamuku at Yanagawa, Kiushiu, are in my collection. 



Remark : In structure this species resembles certain Spilosmylus 

 species more closely than the other three species of the genus. 



Osmylus Pryeri MacLachlan. Fig. 3. 



Osmylns Pryeri M'Lachlan, Trans. Ent. Soc. Lond., ii, p. 1 80-8 1 

 (1875)- 



Osmylus? Pryeri Krüger, Stett. Ent. Zeit., p. 270 (1913). 

 Head yellowish, swollen above ; transverse area between bases of 

 antennae broadly blackish ; vertex darkish, especially along margin ; 

 clypeus yellow; mouth-parts including palpi darkish; antennae black. 



Prothorax yellowish with blackish hairs ; side and hind margin 

 blackish. Meso- and metathorax blackish ; lobes much swollen. 



Legs pale, sometimes fuscous ; coxa I with a crooked spur ; claws 

 serrate internally. 



Abdomen black with pale hairs, the last segment being especially 



hairy ; boat-shaped female organ of 

 usual structure. 



Forewing acute at apex ; neura- 

 tion mostly blackish, subcosta yellow- 

 ish, radius also yellowish but partly 

 Fig. 3. blackish, a few cross-veins narrowly 



Osmylus Pryeri M'L. 20 x. mar gi ne d with grey or fuscous; inner 



