232 THE BUTTERFLIES OF NEW ENGLAND. 



as broad as high, a little iiarro-\ver than tlie eyes ; upper edge hollowed in front of tlie 

 antennae, the middle protuberance thus formed well rounded; lower edge broadly 

 rounded. Vei'tex transverse, tumid, Avell rounded behind, hollowed in front behind 

 the antennae, extending forward between them and angulated; connected with the 

 front by a very narrow and very deep channel between the antennae, the sides of which 

 are very high and diverge, partially surrounding the antennae. Eyes pretty large, full, 

 naked. Antennae inserted in the middle of the summit, in very deep, nearly connected 

 pits, their interior bases scarcely separated, their exterior close upon the margin of 

 the eyes; nearly twice as long as the abdomen, composed of forty-six joints, the 

 terminal fourteen of which expand very gradually into a cylindrical club, constantly 

 augmenting in size, a little flattened beneath and furnished with an indistinct carina ; 

 the last four or five joints, where the club diminishes in size, have a peculiar construc- 

 tion, being much broader on the interior than on the exterior side, tlius causing them 

 to face more and more outward, without much aftecting the shape of the antenna 

 itself, tlie tip of which is bluntly rounded, a little angulated at the outer terminal 

 angle, where the tip lies ; the club is from three to four times broader than the stalk and 

 fully four times as long as broad. Palpi moderately stout, scarcely half as long again 

 as the eye, the terminal joint very small, scarcely more than an eighth the length 

 of the middle joint, the lower portion of the basal joint and the outer half of the 

 upper surface of the middle joint furnished with pretty long projecting hairs and 

 scales. 



Prothoracic lobes large, tumid, well rounded, diminishing a little exteriorly, about 

 three times broader than long and apparently longer than high. Patagia very little 

 convex, broad and well rounded at the base, tapering rapidly in the basal lialf , ))eyoud 

 nearly equal, curving slightly downward, the tip sharply rounded, the whole fully 

 three times as long as broad. 



Fore wings (38 : 11) nearly twice as long as broad, the costal margin slightly and 

 pretty regularly convex, a little more curved near the apex, the outer angle rather 

 abrupt, the outer margin strongly sinuous, particularly in the male, the upper third — 

 above the middle of lower subcostal interspace — considerably produced, its margin 

 nearly straight and at right angles with the apical portion of the costal margin ; behind 

 this, receding with a well rounded curve, the lower third being slightly convex, the lower 

 outer angle well rounded ; inner margin straight. First superior subcostal nervule 

 arising at a short distance before the extremity of the upper border of the cell ; the 

 second originating at an equal distance beyond the same ; the third starting at a little 

 less than half way from the second to the fourth ; the fourth at about two-thirds the 

 distance from the origin of the first to the outer margin ; cell open. 



Hind wings with the costal margin strongly expanded at the base and roundly bent 

 at a short distance from it, beyond which it is scarcely convex, the outer angle well 

 rounded ; outer margin more or less sinuous, the whole subcostal region and the lower 

 foui-thof the margin being roundly and broadly prominent, — in our species considera- 

 bly so, the latter projection almost forming a broad tail ( <? ) , or considerably and pretty 

 regularly rounded, slightly fuller from the middle subcostal to the middle median 

 nervule ($),in both a little crenulate ; inner margin strongly expanded at the base, 

 beyond slightly convex, the apical fourth a little and roundly emarginate, the outer 

 angle rounded ofl". Precostal vein arising a very little beyond the divarication of the 

 subcostal from the costal, curved strongly outward; cell closed. 



Fore legs small, cylindrical, in the male clothed, especially on the inner side, with 

 some long hairs which do not project greatly from the leg, the tibiae less than half 

 the length of the hind tibiae; tarsi either fully as long as the tibia, composed of but 

 one tapering joint, armed at tip with a minute apical thorn ((J); or but little more 

 than half as long as the tibia, distinctly divided, as seen without denudation, into five 

 joints of nearly et^ual diameter, the basal joint nearly twice as long as all the rest together 

 the others nearly ecpial, all fui'iiished beneath with a pair of small, short, rather slender 

 apical spines ($). Middle and hind tibiae of equal length, furnished on either side 

 beneath with a row of short and slender, scarcely diverging, not very frequent spines, 



