248 AMERICAN NEUROPTERA 



Lc ptophlebia basalis n. sp. 



Dark brown ; abdomen dark red-brown ; legs pale, with a brown spot on mid- 

 dle and at tips of femora; setse pale, annulate with brown ; wings hyaline, roots 

 dark brown, sometimes infuscate with reddish for a short distance, and also on 

 basal half of hind wing; veiulets in costal area to bulla are weak and indistinct, 

 but few cross-veinlets in middle of wing, no short iutercalaries along the apical 

 margin; hind wing small, hut about as broad as long, costal margin swollen on 

 middle, but not angulate; male has anterior femora brown. 



Length 4 mm. ; expanse 11 mm. 



Sherbrooke, Canada, July ; Montgomery County, Pennsylvania, 

 September. 



Readily known by the brown roots of the wings. 



C ALXIB.ETIS. 



The females of our species of this genus can be separated by the 

 following table : 



1. Hind portion of fore wing destitute of cross-veins, but one posterior row of 



them, only about 15 to 25 cross-veins in wing beyond the vittii 2. 



Hind portion of fore- wing with cross-veins, at least two posterior rows of them, 

 about 35 to 50 cross-veins in wing beyond vittn 6. 



2. Wing with faint clouds at ends of veins, the vitta has several projections back- 



ward, markings dark brown undatns. 



No markings except the vittn 3. 



3. Basal costal space hyaline, middle cross-veins brown 4. 



Basal costal space included in the vittii 5. 



4. Costa marked with dark spots ; legs pale; hind edge of vitta with very small 



if any indentations montaiiUS. 



Costa pale ; femora plainly dotted with brown ; hind edge of vitta with several 



distinct indentation floridauus. 



.">. Middle cross-veins white ; vitta widely indented behind; spots along margin 

 large; vitta dark brown ; femora plainly marked with brown. 



call for nicu». 



.Middle cross-veins brown; vitta narrowly indented behind; spots along mar- 

 gin smaller; femora barely, if any, marked with brown. . flnclaiiM. 



li. Winy witli several brownish clouds, many fuscous marks along the veins. 



tessellatns. 



No clouds ; only the costal vitta 7. 



7. Vitta broadly interrupted so as to be three barely connected spots; dark brown 



in color coloradeaixis. 



Vitta not so interrupted 8. 



8. Vitta pale ferruginous, seta? and femora unmarked, large species.. .pallidas. 

 Vitta brown, seta? and femora usually marked with brown 1). 



9. Body pale reddish brown ; legs pale, only slightly marked with brown ; vitta 



does not extend back farther in second lobe than elsewhere. 



ferrnginens. 



Body dark brown; legs more or less marked with fuscous; vitta extends 

 back farther in second lobe than elsewhere amei'i< an n*. 



