182 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 88 



7. Subcosta and radius as far separated as the veins behind them, 



and a connecting cross vein Annandalia 



Subcosta and radius close to each other, almost touching in basal 

 part Notiobiella 



8. No outer gradates in hindwing Sympherobius 



An outer gradate series in hindwing 9 



9. First anal vein forked near middle, and the fork running 



parallel to vein 10 



First anal vein vpith only short branches to margin or if forked, 

 then the fork diverges 12 



10. Tip of wing plainly falcate; at least five radial sectors; costal 



area very broad and some of the cross veins connected Drepanacra 



Tip of wing not falcate 11 



11. Four or five radial sectors, last with four or more branches; 



cubitus runs far out, ending near outer margin ; besides the 



usual two there is a subbasal series of gradates Neuronema 



More than five radial sectors, last with but three branches ; cubi- 

 tus ends on hind margin ; but two series of gradates Megalomus 



12. Tip of wings falcate ; but three radial sectors ; first anal with 



divergent fork Allemerobius 



Tip of wing not at all falcate 13 



13. In hindwing origin of first radial sector and fork of medius 



are opposite; in forewing the cross vein from medius to cubi- 

 tus is as long as the cross vein behind it Boriomyia 



In hindwing fork of medius is plainly beyond origin of first 

 radial sector; in forewing the cross vein from medius to cubi- 

 tus is plainly shorter than the cross vein behind it. 



Hemerobius {or Mucropalpus) 



Several subgenera may be recognized, as Indomicromiis for those 

 species of Nenus with a broader wing, and gradates less separated; 

 Schneiderohius for those Hernerohius with the cross vein between 

 radius and medius out near or even a little on the first radial sector. 



Genus NEURONEMA McLachlan 



NEURONEMA LAMINATA Tjeder 



Plate 28, Figubes 26, 28 



Several from Beh Luh Dun, July 30 to August 25 ; Mu Sang Tsai, 

 10 miles northwest of Weichow, July 2 ; O-Er, 26 miles north of Li 

 Fan, August 6, 9,000 feet; Tsi Kong, August 11, 13,000 feet; Hai Tsi 

 Ping, near Tatsienlu, August 5, 13,000 feet ; and 9 miles southwest of 

 Tatsienlu, June 2-7, 8,500 to 13,000 feet. Described from Kansu. 

 The male genitalia, from side, show the superior lobe not nearly so 

 greatly swollen as in N. deltoides^ but much higher than long, and 

 with the wart about its width from the upper margin. The slender 

 piece below is inwardly curved and its tip has stout black spines ; in 

 one specimen there projects from above base of this piece two slender 

 upcurved blades. 



