216 EXOTIC NEUROPTERA. 



HEMEROBIINAE. 

 In the following table are included all the genera known 

 to me at present ; but I am aware that there are others as 

 yet undescribed in several collections. It is quite probable 

 that some of these may be united later, as the number of 

 radial sectors and some other characters used to separate 

 them are hardly sufficiently constant to be relied upon for 

 generic separation. 



1. No recurrent vein at base of fore-wings 2, 



A recurrent vein present 9. 



2. Fore-wings coriaceous, divided up by numerous cross-veins into 



little squares ; hind-wings absent Nesothaunia. 



Fore-wings not coriaceous, nor densely reticulate 3. 



3. Fore-wings with three or more radial sectors, and two or three 



rows of gradates 4. 



Fore-wings with but two radial sectors 6. 



4. Outer margin of fore-wing excised Nesoiiiicronms. 



Outer margin entire 5. 



5. Hind wings rudimentary Pseudopsectra. 



Hind-wings normal ; the branches of upper cubitus in hind wings 



run into a vein parallel to hind margin Microinus. 



6. No gradates in fore-wings, no cross-veins in hind-wings. 



Sisyrella, 

 Some gradates in the fore-wings 7. 



7. Costals mostly simple; cubitus in fore-wings not forked near the 



base Neurortliriis. 



Costals mostly forked ; the cubitus in fore-wings forked near 

 base 8. 



8. Several outer gradate veins ; body and legs very hairy ; female 



with a short ovipositor Nosybiis. 



No outer gradates in fore-wing ; no ovipositor ; hind wings often 

 rudimentary Psectra. 



9. Basal part of wing reticulate ; costal area reticulate ; cross-veins 



between radius and subcosta numerous Gayoniyia. 



Basal part of wing not densely reticulate 10. 



10. No series of cross-veins in the hind-wings ; but two radial 



sectors 11. 



A series of cross-veins in hind-wings 12 



11. Fore-wings with four preapical cross-veins Symplierobiiis. 



Fore-wings with but one preapical cross-vein Notiobiella. 



12. But one radial sector with several branches; cross-veins numerous 



and irregular 13. 



Two or more radial sectors ; cross-veins in more regular series... 14. 



