1292 THE BUTTERFLIES OF NEW ENGLAND. 



Caterpillar. First stage (76 : 28). Head shining piceous, moutli parts black. Body 

 velvety blaclv, first tlioracic segment very pale purplish, its tubercles pale, third thora- 

 cic segment with a tr.ansverse, arcuate, dull whitish dorsal band; dorsum of the third, 

 fourth and eighth abdominal segments pale greenish white. Legs and prolegs black. 

 Length, 3.5 ram. ; greatest breadth, .76 mm. ; breadth at extremity of body, .6 mm. ; of 

 head, 1 mm. 



Second stage (80: 7). Head as in the previous stage, the mouth parts dark luteous. 

 Body swollen on the anterior half, the third thoracic segment being largest; dark red- 

 dish brown, a little mottled with obscure yellowish and blackish; first thoracic 

 segment yellowish brown, the sides and dorsum of the third abdominal, the dorsum of 

 the fourth, a triangular anterior dorsal patch on the fifth, and the dorsum of the 

 seventh abdominal segments, as well as the tip of the terminal segment, milky white; 

 tubercles of the first thoracic segment similar to, but no more conspicuous than those 

 of the first stage ; a lateral row of conical warts, developing into tubercles on the 

 eighth abdominal segment, bearing very short hairs ; a pair of small laterodorsal 

 shining warts on the third thoracic segment; below the lateral tubercles of the same 

 segment a narrow, longitudinal, velvety black streak; and just above the lateral 

 tubercles of this segment and of the first and fifth to seventh abdominal segments, 

 a minute, circular, bluish white spot. A little fold can be thrust out of the dorsum 

 of the first thoracic segment, the first indication of the osmateria. Legs black ; prolegs 

 dark bluish white, milky white at tip. Length, 6.75 mm. ; greatest breadth, 1.75 mm. ; 

 breadth at eighth abdominal segment, 1.2 mm.; breadth of head, 1.3 mm. 



Third stage. Head (80:8) blackish castaneous, black above and behind; front of 

 first thoracic segment dull purple; rest of body glistening, dark, olive green, blotched 

 irregularly with pale olive green; the posterior half of the third, the whole of the 

 fourth and a narrow, dorsal part of the fifth abdominal segments, with a common, 

 cream-colored, dorsal patch, extending down nearly to the spiracles. The dorsum of 

 eighth abdominal segment pale green ; a very pale, stigmatal line, inconspicuous except 

 on the thoracic segments; beneath it the body is bluish green. The larger tubercles 

 of the front part of body blackish luteous, those of the hinder extremity pale or 

 whitish. Osmateria reddish brown. Spiracles black. Prolegs pale bluish green. 

 Length, 9 ram. ; greatest breadth, 2.5 ram. ; breadth of head, 2.2 mm. 



Fourth stage. Head (80:9) pale reddish; antennae pale, ocelli black; mouth parts 

 paler than the general tint of the head. Body : the tlioracic and first two abdom- 

 inal segments dark olivaceous, the first two abdominal segments tinted with brownish, 

 the next two pale yellowish, the third marked in the middle anteriorly with dark 

 olivaceous, the fourth similarly marked on the sides posteriorly ; the fifth to seventh 

 abdominal segments dark brownish olivaceous, the fiftli with a small, anterior, dorsal, 

 yellowish spot; the eighth and ninth yellowish above, olivaceous on the sides, a large 

 olivaceous spot occupying the middle of the two segments jointly ; the edges of the 

 segments are bluish green, excepting the division between the first and second abdom- 

 inal segments, which is ferruginous. Whole body beneath the spiracles pale bluish 

 green; above them dotted with indistinct, shining spots; the third thoracic segment 

 with a transverse row of slightly raised ferruginous warts placed in the centre of the 

 segment, together with small, roseate spots, also placed centrally in the lateral and 

 supralateral line, edged faintly with black and with a short, longitudinal, black line 

 between them ; first abdominal segment with a pair of subdorsal, slightly elevated 

 warts, placed anteriorly, and a transverse row of four faint, roseate spots, like those 

 of the previous segment, placed posteriorly ; the fifth to seventh abdominal segraents 

 with similar subdorsal spots; the eighth and ninth segments with subdorsal, elevated, 

 hairy, yellow warts, that of the eighth minute, that of the ninth much elongated, situ- 

 ated on a transverse fold ; lips of the osraaterial orifice on the first thoracic segment 

 yellowish. Spiracles pale luteous, edged very narrowly with pale testaceous. Legs 

 pale, the tip of the claws infuscated. Prolegs pale bluish green. Length, 21.5 mm. ; 

 greatest breadth, 4 mm. ; breadth posteriorly, 2.5 mm. ; breadth of head, 3 mm. 



During the progress of this stage a considerable change takes place, the body, and 



