1736 THE BUTTERFLIES OF NEW ENGLAND. 



Prothoracic lobes rathersmall , appressed, laminate, subtriangular, the inner and lower 

 sides nearly straight, the upper outer arcuate, less than half as long again as high and 

 not so long as tlie shorter diameter of the eye. Patagia not very large, about four- 

 fifths as long as the breadtli of the head, the posterior lobe half as broad and not half 

 as long again as the base, straight or slightly curved, nearly equal, broadly rounded at 

 the tip, nearly four times as long as broad. 



Fore wing (42 : 17) somewhat less than twice as long as broad, the lower outer 

 angle falling distinctly outside the middle of the costal margin ; the latter straight or 

 scarcely convex; the outer margin gently and regularly convex, sliglitly bent in the 

 middle in some instances ; the inner margin scarcely concave. Costal uervure ter- 

 minating at a little before the apical third of the costal margin ; subcostal nervure 

 moderately close to the costal margin, the second nervule arising a little lief ore the 

 middle of the wing; cell two-tliirds as long as the wing, very slender, subequal in the 

 apical two-thirds; Urst median nervule arising at a little more than half way from the 

 base to the origin of the second branch, the latter a little below the base of the second 

 subcostal nervule; internal nervure straight, short. 



Hind wing somewhat longer than broad ; the lower distinctly longer than the upper 

 half in the male, equal in the female; the costal margin is straight beyond the strong 

 basal lolie; the outer margin well rounded and full, with the sexual differences noted; 

 anal angle well rounded ; cell excessively short. The flrst median nervule originating 

 at but a slight distance before the second and at about an equal distance further from 

 the base than the subcostal fork. 



Discal stigma of male closely resembling that of Liraochores ; the scales contained in 

 the stigma consist of stiff joiuted threads, two-pronged and single-pronged rods of 

 varying thicknesses at the base of the stigma, and long and slender androconia of 

 various forms, toward the apex of the stigma, generally larger at the apex than at the 

 base, and always toleraljly well rounded at this point, but sometimes equal throughout. 



Legs 2, 3, 1. Femora clothed beneath with a rather thick fringe of hairs, on all but the 

 fore legs decreasing greatly in length from the base toward the tip ; hind tibiae furnished 

 above with a very thin fringe of long hairs. Femora 2, 1,3; tibiae 2, 3, 1; tarsi 3,2, 1. 

 Fore and hind femora fully two-thirds the length of the middle femora ; fore tibiae 

 two-thirds the length of the fore femora, half the length of the middle and hind femora. 

 Leaf -like appendage of the fore tibiae long and slender, tapering on the outer half to 

 a point and at the same time curved ; attached to the middle of the outer four-fifths of 

 the joint, it surpasses its tip and is fully five times as long as broad ; other tibiae armed 

 at tip with a pair of very long and slender unequal spurs, the hind tibiae with a sec- 

 ondary exactly similar pair in the middle of the outer two-thirds of the joint; both 

 middle and hind tiljiae with lateral rows of distant, rather long spines. Tarsal joints 

 1, 2, 3, 4, except on fore legs wliere they are 1, 2, 3, 5, 4, the terminal scarcely longer 

 than the antepenultimate joint; fore tarsi as long as the middle femora, two-thirds as 

 long as the hind tarsi which are scarcely longer than the middle tarsi ; all furnished 

 with a triple row of very delicate spines, the apical ones of each joint but little longer 

 than the others; basal joint as long as the others combined, excepting in the middle 

 and hind legs of E. verna, where it is equal only to the second, third and fourth com- 

 bined ; second about half as long as the basal joint. Claws small, compressed, taper- 

 ing, strongly arcuate, especially near the middle; pad pretty large; paronychia bifid, 

 the upper lobe compressed, laminate, slightly falcate, reaching the tip of the claw and 

 considerably longer than broad ; the lower slender, thread-like, half as long as the 

 claw. 



Abdominal appendages: Upper organ not very large, very slender, abruptly arched, 

 the hook connate at base, the extremities widely separated and therefore as a whole 

 not tapering, upcurved a little at the tip ; lateral amis forming an inferior, straight 

 and liorizontal lamina, sometimes bifid, well separated from the hook. Clasps very 

 large and broad, pretty strongly convex, as long as the upper organ, the apical portion 

 with an extensive posterior extension as well as an upper triangular lamina. 



Mature caterpillar. Head smaller than any of the body segments excepting the 



