1626 THE BUTTERFLIES OF NEW EMGLAND. 



joint slender, elonsate, conical, bluntly pointed at tip, straight and at the base about 

 oue-eightli as broad as the middle joint and one-fourth as broad as long. 



rrotlioracic lobes not very large, appressed, laminate: viewed from the front tri- 

 angular, each side a little convex, the upper outer side longest, inner side shortest, its 

 extreme length nearly half as great again as its breadth and about three-fourths the 

 shorter diameter of the eye. Patagia much slenderer than in the preceding genera, 

 scarcely broader at base than the length of the protlioracic lobes, the posterior lobe 

 less than half as broad as the base, more than lialf as long again, nearly four times as 

 long as broad, straight, equal on the basal half, the apical half tapering a little to a 

 rounded tip, the whole nearly as long as the breadth of the unusually broad head. 



Fore wing (42 : G) twice as long as broad ; the lower outer angle falling directly be- 

 neath the middle of the wing; costal margin scarcely convex at base, beyond nearly 

 straight ; outer margin well and regularly rounded with slight indication of an excision 

 at the first median nervule. Costal nervure terminating in the middle of the wing; 

 subcostal nervure approximated to the costal margin, its nervules originating at longer 

 distances apart than usual ; the second arising before the middle of the wing ; cell two- 

 thirds the length of the wing, exceedingly slender, subequal in the distal two-thirds; 

 the first median nervule arising midway between the base and the second, the second 

 in the middle of the wing; internal nervure straight, sliort. 



Hind wing of equal length and breadth ; the costal margin beyond the strong basal 

 lobe straight ; outer margin between the costal and lowest median nervule strongly 

 and regularly rounded; between the lower median and the internal as strongly rounded, 

 forming a distinct lobe, its highest point below the tip of the submedian. Subcostal 

 nervure forking much before the median ; the median at a little beyond the basal third. 



Discal stigma of male consisting of an oblique straight streak of dead black, closely 

 compacted, erect scales crossing the base of the median interspaces, closely overhung in 

 front by arching fulvous scales, except at extreme base, and followed below by a 

 narrow area of erect, loosely compacted, changeable scales. The scales consist of 

 jointed threads in the heart of the stigma, the joints unusually short, accompanied by 

 subspatulate rod-like scales. 



Legs 2, 3, 1 ; femora and tibiae clothed as in Atrytone, the superior tibial spines a 

 little more conspicuous. Femora 2, 1, 3; tibiae 2, 3 1 ; tarsi 2, 3, 1. Fore and hind fe- 

 mora two-thirds the length of the middle femora. Fore tibiae more than two-thirds the 

 length of the fore femora, which are a little shorter than the hind tibiae, these scarcely 

 shorter than the middle pair. Leaf-like appendage of fore tibiae lanceolate, a little 

 curved, more than four times as long as broad, pointed, but tapering only toward the tip, 

 originating in the middle of the outer four-fifths of the joint and not surpassing its tip ; 

 other tibiae furnished .at the apex with a pair of very long .and slender, tapering, unequal 

 spurs and the hind pair with a similar shorter p.air in the middle of the .apical two- 

 thirds of the tibia; the middle and hind tibiae .are also furnished along the outer edge 

 of the under surface, on which the spurs are shorter, with a row of infrequent very 

 long and slender spines. Tarsal joints, 1, 2, 3, 4, 5, the penultimate possibly shorter 

 than the terminal on the fore legs ; fore tarsi more than two-thirds as long as the 

 others, of the same length as the middle femora, all with a triple series of pretty long 

 and slender spines beue.ath, the apical ones of each joint considerably longer than the 

 others, excepting on the fore legs; basal joint as long as the second, third and fourth 

 together, the second fully half as long as the first. Claws pretty small, slender, 

 tapering, pretty strongly and regularly arcuate, finely pointed. Pad pretty large, 

 cordiform ; p.aronychia broad, ensiform, twice as long as broad, reaching nearly to the 

 tip of the claws, compressed, laminate. 



Abdominal appendages: Upper organ, large, broad, depressed, lamiuiite, broadly 

 arched; centrum and hook nearly similar and equal, the latter tapering, simijle, blunt, 

 extending beyond the clasps. Clasps rather small, triangul.ar, broad at base, taper- 

 ing, the tip bifid above. 



Although consisting of but a single species, this genus is widely spread, 

 extending from Virginia to Buenos Ayres. As will be seen below, it prop- 



