470 WILLIAM T. M. FORBES 



** Hind icing of male markedly notched at 1st A, with a strong lobe below, whose 

 apparent length is increased by its much longer fringe; outer margin more 

 oblique, and apex more extended than usual. 



-'>,'). C. footiana Fernald. Fore wing- fuscous, marked with black-brown. Thorax 

 fuscous; basal patch large, prominent, not reaching costa; medial band broad 

 toward costa, and especially over cell, the teeth well marked but not very long, 

 then abruptly narrowing, and usually not reaching inner margin; the lower end 

 lighter, chocolate brown. Anal patch narrow and normal, or absent; subterminal 

 bar normal. 20 mm. 



June to August. Larva on witch-hazel. 



New York to western Pennsylvania and Virginia. New York: Hemlock Lake, 

 Ithaca. 



32. BACTBA Stephens 



Palpi large, broadly hairy, and beaklike, about as in Ancylis; eyes normal; 

 thorax smooth. Fore wing smooth scaled; outer margin oblique, slightly arched, 

 or straight. All veins separate and evenly spaced; M^ perceptibly separate from 

 M.T at origin; Cu 2 nearly straight. Hind wing normal (fig. 268), R and M x stalked 

 at origin, then usually approximate a third way to margin; space between MI 

 and Mo wide, as usual; M... M :; . and Cu t close together at origin, but perceptibly 

 spaced. No secondary sexual characters. 



The genus is nearly world-wide, and perhaps, like Limnaecia, Australasian in 

 origin. All the known larva; are borers in rushes (Juncus), but seem to stray 

 to other marsh plants. 



1. B. verutana Zeller. Clay -color to dark wood-brown; costa and dorsal mar- 

 gin with fine blackish dots and striae, and slightly heavier bars representing the 

 antemedial and postmedial bands. Wing surface with some fuscous flecking, a 

 blackish shade or spot in fold at one -third way out and one over lower angle of 

 cell, often enclosing a pale discal dot. Frequently a pale longitudinal stripe below 

 the costa. Terminal line usually continuous and perceptibly wavy, followed by a 

 series of very short white scales in extreme base of fringe. Fringe often showing 

 several parallel gray lines. Wing often longitudinally streaked toward margin. 

 9-15 mm. (lanceolana of American authors.) 



May and June; August and September. Larva normally in Juncus, but reported 

 also from Cyperus and Scirpus. 



Indiana to North Carolina and south. 



2. B. furfurana Haworth. Wings a little narrower, with more oblique outer 

 margin; fore wing clay-color to wood-brown, the markings tawny to gray -brown; 

 base dark, with outer boundary abruptly bent in cell; an irregular postmedial 

 fascia, sharply bent on cell or lost below middle of wing, enclosing a pale or white 

 discal dot; the markings frequently barely traceable. Usually with a spot at 

 anal angle; almost always with a shade running to the apex. Terminal line as 

 before. 10-16 mm. 



Larva on Juncus and Scirpus. 



General in distribution; also occurring in Europe. New Y'ork: Ithaca. 



3. B. priapeia Heinrich. Larger than B. verutana and furfurana, costal striae 

 fine and obscure, not much emphasized at middle; fore wing frequently all dark 

 brown, typically with a longitudinal blackish shade from base to apex, leaving 

 the anal angle contrastingly pale. Palpus with a fuscous spot on second segment 

 and dark third segment. 1C mm. 



July ; September. 



Woods Hole, Massachusetts, to Utah. 



4. B. maiorina Heinrich. Similar to B. priapeia, biit paler. Ochreous; head 

 and front of thorax paler, the palpus whitish; fore wing with a -fuscous shade 



