36 AMERICAN NEUROPTERA. 



BORIOinYIA n. geu. 



Antennae mouilifbrm ; wings entire ; subcosta ending in margin ; 

 costal area broad at ba?e; with a recurrent vein ; costal cross-veins 

 branched ; two series of gradate veinlets in both pairs, the outer in 

 forewings of more than four veinlets ; a cross-vein connecting first 

 radial sector to median vein ; usually four radial sectors ; the me- 

 dian is scarcely bent toward the cubitus at connecting veinlet; in 

 iiindwings the first radial sector forks as far out as forking of the 

 median vein. 



Type. — B. disjimctus Banks. 



This genus includes several Eui'opean species, notably Hem. pel- 

 lucidus. The species are mostly found in the north or in mountain- 

 ous localities. 



SYNOPSIS OF SPECIES. 



1. From cubitus between basal cross-vein and tbe last veiulet of inner gradate 



series there is but one fork ; inner gradate series running into cubital 



cell 2. 



From cubitus between basal cross-vein and the last veinlet of inner gradate 

 series there are several forks; inner gradate series not running into 

 cubital cell 3. 



2. Forewings banded at middle and tip, and hiudwings at tip with brown. 



fidelis. 

 Forewings not plainly banded ; hindwings with dark spot at tip. 



3. First radial sector connected to second near base by a cross-veinlet 4. 



First radial sector not connected to second 5. 



4. Apical margin of forewing alternately white and dark brown. 



longifi'Oiis. 

 Apical margin of forewing evenly pale brown traiisversus. 



5. Face pale yellow, with a median daik stiipe lielow ; wings rather evenly 



marked coloradeiisis. 



Face mostly brown or black, without dark median stripe below 6. 



6. Forewings pale, with but few marks except two dark spots on inner gradate 



series; venation of hindwings almost entirely pale; face shining 



black scliwarzi. 



Wings more heavily marked ; apical of hindwings more or less brown, v ... .7. 



7. Venation of hindwings almost wholly brown disjiiiiclus. 



Venation of hindwings pale, ex(!ei)t at tip •"• posticalus. 



Boriontyia fi<Ieiis Banks. — Head and thorax fuscous ; autennse and legs 

 pale ; abdomen blackish. Wings hyaline, venation pale, scarcely dotted with 

 brown, gradate veinlets mostly fuscous; a dark band across wing from within 

 pterostigma through gradate veinlets, and mostly fuscous beyond the second gia- 

 date series; hindwings with an indistinct dark band across the middle, and 

 another just beyond outer gradate series, leaving a narrow pale, apical margin. 



