1744 



THE BUTTERFLIES OF NEW ENGLAND. 



(37 : 35) much broader than in metacomet, with the ceutrum gently arched in its hori- 

 zontal portion, the liook scarcely more than twice as long as broad, the triangular 

 depressed tips separated from each other by a V-shaped excision extending less than 

 one-third the length of the hook, the extremities blunt. Lateral arms connate only at 

 their base, beyond equal, lying beneath and widely separated from the hooks, as long 

 as they and parallel to them. Clasps about two and one-half times longer than broad, 

 nearly equal but a little broader at the apex than at base, the apex produced pos- 

 teriorly as a very large, well rounded lobe as broad as the clasp and sujjeriorly as a 

 broad, triangular, pointed expansion, a little incurved at the tip, overlaid by the long 

 and narrow, equal, bluntly pointed, upward and a little backward but not inward 

 directed expansion two or three times as long as broad. 



Described from 7 S ,S i . 



The unusually large size of the spot in the lower median Interspace of the fore 

 wing readily separates the female of this species, not only from its congener but from 

 several other species which it otherwise much resembles. 



Accessory sexual peculiarities. The discal stigma of the male has been de- 

 scribed under the wing ; the scales contained in it consist of jointed threads (50 ; f) 

 in the heart of the stigma; of stout, two-pronged rods of considerable breadth (G a) 

 at the extreme base of the stigma ; and at its extreme tip a great variety of androcouia 

 with rounded tips sometimes wavy and of very varying widths, often largest at the 

 apex and narrowing gradually toward the base, and at other times equal throughout 

 the greater portion of their extent ; these varieties are shown in figures 6 c, g, h, i, k, 1 ; 

 the cover scales (6 e) are twice as long as broad, enlarged gradually from base to 

 apex and have a wavy, slightly convex outer margin. In the vitreous spot in the 

 lower median interspace of the male are found very finely striate scales (6 b) , nearly 

 quadrate but rounded on all sides and nearly equal throughout ; while similar scales 

 (6 d) in the same spot of the female are vaguely tridentate at the tip aud more 

 rounded at the base, but otherwise they do not differ. 



Egg (66:35). As represented in the drawing by Mrs. Peart, the egg is very pale 

 green, almost white, very regularly and uniformly domed, not very much more than 

 half as high as broad; but the sketch is such that it probably gives, even in outline, 

 an apparently less height than it really has. 



Caterpillar. Last stage (77:25,26). Head (80 : 65) dull castaneous, edged be- 

 hind with black, the minute points with which it is covered a little darker and the 

 hairs pale brown ; labrum very dark green, jaws blackish, antennae pale castaneous, 

 ocelli black. 



Body yellowish or wood brown with a russet tinge along the upper half, flecked 

 rather uniformly and profusely with minute, dark brown spots, and covered by pale 

 brown, short hairs, arising from black dots; a slender, medio-dorsal stripe of blue 

 black, deepest at the front of each segment, similar slender, dusky, supralateral and 

 infralateral stripes, fading away at either extremity beyond the third thoracic aud 

 seventh abdominal segments, and a similar but fainter, scarcely perceptible, suprastig- 

 matal stripe ; lower pai't of the body more pallid than above with a slight greenish 

 tinge, wholly lacking the warm tints of the dorsum ; first thoracic segment pallid, the 

 shield corneous, black in a very narrow stripe or line, broken in the middle above. 

 Legs pale at the base, luteous beyond, the claw dusk}'; prolegs concolorous with body. 

 Spiracles luteo-castaneous centrally, with a dark castaneous rim. Length when con- 

 tracted, 21.5 mm. ; breadth of body, 5 mm. ; of head, 3 mm. 



