1488 



THE BUTTERFLIES OF NEW ENGLAND. 



running from near its middle a .short distance forward to the side of the main body. 

 Hooks very small, asymmetrical, tlie right being much the larger, pointed, scarcely 

 curving downward at tip, approximate at base, divergent; tooth small, sessile, spatu- 

 late or obpyriform, appressed. Ai-ms asymmetrical, very slender, nearly uniform, 

 curving, having first a general direction downward and slightly forward, afterwards 

 backward, upward and inward, the curve quite regular, expanding slightly at tip and 

 bearing between the exti'cmities the inferior armature — a rather small, rounded field 

 of minute, raised points. Left clasp : Main body broad and rather short, slightly gib- 

 bous, the upper edge full at base, the lower nearly straight. Blade moderately long, 

 the upper three-fourths bent over inward so as to be horizontal, or on the basal half 

 slightly deflected, nearly equal in width, but a little constricted near the middle, the 

 apical fourth tapering to a bluntly rounded apex, which is curved slightly downward; 

 viewed laterally, the blade tapers regularly and slightly and is straiglit and horizontal; 

 viewed from above, it curves a very little inward; basal process developed as a slen- 

 der, scarcely compressed dactyl, bent over backward from its origin, so as to be 

 nearly horizontal on a lateral view, scarcely curving inward, nearly one-third as long as 

 the blade, a little enlarged beyond the middle, and armed with a few very minute 

 spinules around the edge of the enlarged portion. The lobe consists of an upward 

 prolongation of the upper hind angle of the main body into a bluntly pointed triangu- 

 lar expansion, curving inward, leaving the apical border of the main body straight, 

 and at right angles with the lower margin. Bight clasp : Main body much as on the oppo- 

 site side, but the upper portion of the base not so full, and beyond the middle the 

 upper border is slightly elevated. Blade broad, not very long, directed slightly up- 

 ward, especially at the tip, slightly excised along the middle, larger at the apex than 

 at the base, gibbous at the base, beyond flat, twisted so that the outer surface becomes 

 nearly horizontal, curved slightly inward, the apex, especially the upper angle, still 

 more so, the tip docked almost squarely and a little diagonally, so that the apical edge 

 is directed almost straigfit backward, very broadly rounded, the edge slightly thick- 

 ened, the angles not sharp; basal process consisting of a small, backward directed, 

 triangular tooth, bluntly pointed and as long as the smallest breadth of the blade. 

 Lobe consisting of an upward, posterior projection of the upper hind angles of the 

 main body, forming a subtriangular, broadly rounded, gibbous pad, curving inward 

 and a little backward, separated from the basal process of the blade by a very broad, 

 deep and regularly curved excision. 



Described from 31 3,4?. 



Accessory sexual peculiarities. The costal fold of the foi'e wing of the male 

 encloses a dense clustered mass of pediform bristles (47 : lOe) rather more than 1 mm. 

 long; and androconia (10 a, b) and cover scales (10 c, d) diil'erentin no essential feature 

 from those of T. juvenalis. 



Caterpillar. Last stage. Head black, minutely pubescent, depressed at the vertex 

 (subcordate), with a subdentate angle on each side, the upper part of the face and 

 each cheek sulfused with dull yellow. Body fusiform, yellowish green, minutely pa- 

 pillose with pale points, with a dark dorsal and a subdorsal bright yellow line, both 

 commencing on the first abdominal segment, and an obscure pale line on the abdominal 

 fold ; first thoracic segment yellow, with no band. Length, 19 mm. ; breadth, 5.3 mm. 



This and the following description by Dr. A. W. Chapman of Florida presumably 

 belong to this species, as the short description and sketch of the imago perfectly agree. 



Chrysalis. Glaucous green on the thorax and posterior segments, yellowish green 

 on the others; head case prominent, rounded; a prominent velvety black raised dot at 

 the origin of the round wing covers. Length, 19 mm. 



