114 NEW YORK STATE MUSEUM 



c Cubitodiscoidal nervure usually not appendiculate 



d Ferruginous or fulvous bifoveolatum Brulle 



dd Ferruginous varied with black and venter of mesothorax usually 



black nig r ovarium Prov. 



cg Cubitodiscoidal nervure appendiculate, appendix extending into 



second discoidal cell abnormum Felt 



aa Wings subbyaline 



6 Wings distinctly ferruginous ferruginipennis Felt 



l)b Wings yellowish, fuscous along apical costal margin, .costale Cress 



Ophion bilineatum Say 

 Two-Uned Ophion 



This species, next to the long-tailed and purged Ophions, is the 

 most abundant in collections and the one most frequently noticed 

 in entomologic literature. It may be easily separated from the 

 other more common forms by its medium to large size, strongly 

 compressed abdomen, by the subtriangular, obliquely truncate 

 male clasps and the appendiculate cubitodiscoidal nervure. 



Life history and habits. Very little is recorded concerning the 

 life history and habits of this species. Its comparative rarity in 

 collections is probably explained by its crepuscular or nocturnal 

 habits, since our trap lantern record indicates that it is one of 

 the most abundant forms attracted to light. 



Trap lantern records 



1889 





JUNE 



JULY 



AUGUST 



SEPTEMBER 





4 



30 



3 



1 



' 1 1 



4 21 24 25 



26 27 



28 

 4 



1 

 29 30 



i 



l| 1 



1 1 



SI 



2 



5 



1 



12 



2 

 2 

 80 



3 

 6 



4 



1 



8 



5 

 9 



6 

 1 

 1 



7 

 3 



1 | 

 8 11 12 



1 

 1314 



"1 1 



T 



15 



14 



16 

 13 



17 

 59 



I 

 1819 







1 





| 



1 



3 



1 



4 



4 



4 



13 



2.. 

 3 8 



4 .. 







1 



1 1 



Female.. 



1 





1 



17,25 



1889 



1892 





SEPTEMBER 



OCT. 



AUG. 



"3 

 o 



MAT 



JUNE 



SEPTEMBER 







20 



21 



21 

 1 



14 



m 



2 



23 



1 



I 1 

 24 25 26 



1 i 



..2 3 



7,1817 



27 

 2 



28 

 3 



29 

 3 



30 

 11 



1 

 1 



9 



2 



5 



10 



22 



20 



28 



1114 



16 

 1 



19 

 1 



20 

 1 



23 

 1 



24 

 2 



25 



1 



30 



1 







Male.... 





30 



i 



1 



2 



2 







1 



1 



1 











Female 



2 



420 



3 



19 















