1496 



THE BUTTERFLIES OF NEW ENGLAND. 



and slightly downward, then downward and slightly forward, finally bent abruptly at 

 a right angle at the bottom, and continued backward to the inferior armature, which 

 is borne upon its upward curved, slender limb, on either side of, and behind, the tooth. 

 Left clasp ■ Main body increasing rapidly in breadth from the base to the commence- 

 ment of the lobe ; transversely it is curved a little, longitudinally it is almost straight. 

 Blade of nearly nniform width, elbowed just before the middle in an upward direc- 

 tion, and at the same time bent at an angle of about forty-flve degrees inward, the 

 outer surface becoming uppermost, carrying with it the upper half of the basal por- 

 tion of the blade ; the apical third of the outer surface, and particularly the border 

 and the broadly rounded, faintly uncinated tip, armed with minute spinules or raised 

 points. A minute tubercle shows the position of the basal process. The region of 

 the lobe is marked by a distinct furrow running far toward tlie base of the main body ; 

 the lobe is of medium size, bent a little inward, with a slight sinuosity, and is rudely 

 triangular; the basal portion of its ui)per border is a little swollen, its apical half 

 slightly arched and thickened. Ri(jht clasp : Main body similar to that of the left piece 

 but slenderer. Blade compressed and tuberculate at the base of the lower edge, like 

 that of the left clasp, but having the upper edge slightly thickened and bent inwards ; 

 it is broad at base, narrows slightly and regularly for three-fourths the distance to 

 the apex, excepting a central, broad, scarcely elevated denticle on the upper edge; is 

 there bent abruptly inwards and slightly upwards, then suddenly narrowed, and ter- 

 minates in a bluntly rounded point; this narrowed portion is armed like the tip of the 

 opposite blatle ; basal process wanting. Lobe broad at the base, narrowing imme- 

 diately, suddenly and extremely, and then developed into a somewhat compressed 

 policiform process of nearly uniform size, parallel to the basal portion of the blade, 

 about as long as its terminal portion, ending in a thickened, bluntly rounded tip. 



Described from 173,39. 



Accessory sexual peculiarities. The costal fold of the fore wing of the male en- 

 closes a mass of clustered pediforra bristles (47: 8c) about .75 mm. long; apple-seed 

 androconia (8 a) closely packed on the costal vein ; stout, straight, simple bristles (8 d) 

 perhaps occasionally expanding and two-pronged at tip ; and cover-scales (8 b) more 

 than usually elongate. 



Egg (66 : 16). Shaped much as in the other species, but perhaps with the sides not 

 so strongly curved, the ribs, eighteen or nineteen in number, being more than usually 

 numerous, about 12 mm. apart, all nearly reaching the edge of the central summit de- 

 pression but only ten actually doing so ; this depression (69 : 9) is .16 mm. in diameter, 

 the innermost circle of eight micropylic canals, .01 mm. in diameter, which is about the 

 length of the surrounding kite-shaped, micropyle cells, eight or nine in number, fol- 

 lowed by hexagonal elongated cells which become larger and shorter as they recede 

 f I'om the centre ; the space between the ribs crossed by scarcely perceptible raised 

 lines, or distinct only next the vertical ribs, breaking the surface into cells about five 

 times broader than long, the cross lines being about .23 mm. apart; surface of cells 

 with regularly distributed, tolerably frequent, circular punctures, .002 mm. in diameter. 



Caterpillar. Last stage (77 : 13). Head dark brownish fuscous, each side with an upper 

 and lower dull, yellowish, oval spot. Body pale pea green ; (the figure is rather dubious 

 but) apparently the dorsal surface is darker green than most of the body with some 

 obscure longitudinal dashes of white in it; it is followed by rather high lateral bands 

 of pale greenish yellow ; there is also a similar stigmatal band, the space between being 

 again greenish, delicately blotched with white; last segment yellowish; legs brownish 



