OF PHILADELPHIA. 401 



Variety. — The ferruginous tinge of the base of the wings, ex- 

 tending to the middle ; that of the superior pair chiefly on the 

 anterior half of the wing; that of inferior pair more obvious. 

 much broader, extending nearly to the thinner margin. 



Length one inch and two-fifths. 



I have found many individuals of this species. 



V. L.fcrruginea Enc. Meth. 565. 



15. L. SEMICINCTA.— Wings tinted on the basal half with pale 

 ferruginous ; anal processes with an angle beneath near the tip. 



Inhabits Indiana and 3Iassachusetts. 



% Antennae black, with a blackish line between them : thorax 

 brownish ; pleura yellowish ; wings hyaline ; stigma rather small 

 its marginal nervures thick and black ; basal half more or less 

 tinted with pale ferruginous, particularly on the inferior wino-s : 

 about seven marginal cellules between the middle and the stio-ma ; 

 anal membrane white ; abdomen with a dorsal and lateral edo-e : 

 paler at base, and with a lateral black line ; anal processes de- 

 flected, rectilinear, cylindrical, with three or four minute denti- 

 culations beneath, an angle beneath near the tip, and the tip 

 acute ; inferior process extending nearly to the tip of the superior 

 pair. 



Length about one inch. [281 



Very much like a small specimen of ruhlcundula S., but dif- 

 fers in several characters, particularly in the anal processes, and 

 in the number of marginal cellules. 



IG. L. SIMPLICICOLLIS. — Wings immaculate ; stethidium yel- 

 lowish ; abdomen pale brown, a little varied with black. 



Inhabits Indiana and Massachusetts. 



% Frontal vesicle pale greenish-yellow ; a black band across 

 the antennae ; occiput and posterior orbits black, with yellow 

 spots ; eyes acute above, almost meeting ; stethidium green-yel- 

 low, alternating with black at the superior base of the wino^s ■ 

 wings immaculate; stigma fuscous; anal membrane narrow, black; 

 feet black ; thighs on their posterior side brownish ; abdomen 

 brownish, with slender incisural black lines and black edges to 

 the carinas ; a black spot on each, excepting the three basal oneg : 

 beneath black ; anal appendices very short, green, mucronate./' 



Length one inch and a half. 

 1839.") 26 



