OF Pnil.ADELPIIIA. 401 



Varirty. — The ferruginous tinge of tlic 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 ohvioun, 

 uuieh broader, extending nearly to the thinner margin. 



Length one inch and two-tifths. 



I have found many individuals of this species. 



Y. L. ft rriKjinva Enc. Meth. ;")(]"). 



1;'). L. SEMICINCTA. — AVings tinted on the basal half with pale 

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



Inhabits Indiana and Massachusetts. 



^Antennas black, with a blackish line between them : thorax 

 brownish ; pleura yellowish ; wings hyalino ; stigma rather small, 

 it8 marginal nervures thick and black ; basal half more or less 

 tinted with pale ferruginou.s, particularly on the inferior wings ; 

 about seven marginal cellules between the middle and the stigma ; 

 anal membrane white ; abdomen with a dorsal and lateral edge ; 

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

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

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

 acute ; inferior process extending nearly to the tip ol" the superior 

 pair. 



Length about one inch. [28] 



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

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

 in the number of marginal cellules. 



16. L. SIMPLICICOLLIS. — Wings immaculate ; stctliidium yel- 

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



Inhabits Indiana and Massachusetts. 



% Frontal vesicle pale greeni.sh-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 wings; 

 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 carina; ; a black spot on each, excepting the three basal ones ; 

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



Length one inch and a half. 

 1839.] 2G 



