252 THE BUTTERFLIES OF NEW ENGLAND. 



long as all the others together, while they are nearly equal among themselves, and all 

 are armed beneath with four rows of spines similar to those of the tibiae, the terminal 

 ones of the outer row on each joint slightly longer and a very little curved. Claws 

 rather delicate, very strongly curved, a very little compressed, finely pointed. Parony- 

 chia very slender, equal, slightly curved, nearly as long as the claws. Pulvillus sub- 

 globose, the extremity much broader than high. 



Male abdominal appendages: upper organ; body pretty broad and stout, gently 

 arched above both longitudinally and transversely; hook as long as the body, curved 

 a little downward, broad at the base, rapidly narrowing and depressed on the basal 

 half, slightly compressed on the apical half, pointed and more strongly compressed 

 at the tip. Clasps pretty stout, broad and nearly equal on the basal half, beyond nar- 

 rowing pretty rapidly, nearly three times as long as broad; the interior finger free 

 only in its upper half and extending beyond the upper edge of the clasp, although this 

 is more or less prominent at the same point, as is the lower edge at the base of the 

 finger; the apex of the clasp not pointed, but armed with a few teeth. 



Egg. Nearly spherical, but a little broader than high, broadly flattened at base, the 

 apex slightly depressed. Surface broken up into pretty large, hexagonal cells, having 

 very high and very thin walls, which are furnished at every angle Avith a long and 

 slender, tapering, outward projecting, delicate spine or stiff filament. Micropyle 

 small, formed of minute, roundish, angular cells of irregular shape, bounded by heavy 

 rounded walls. 



Caterpillar at birth. Head uniform, unprovided with prominences, uniformly 

 rounded, a little and narrowly excised in the middle of the summit, rather squarely 

 docked below, rather broader than high, broadest a little above the ocelli, above rap- 

 idly narrowing in a broad curve, furnished with a very few, very short, bristly hairs, 

 thickened at the tip and seated on minute warts, mostly occurring around the outer 

 hinder edge ; triangle higher than broad, reaching very nearly half-way up the front. 

 The four ocelli of the front row arranged in a pretty convex series at equal distances 

 apart. Labrum but little excised in front. Body uniform in size, quadrato-cylindrical 

 or a little flattened above and on sides, the second thoracic segment slightly the 

 largest, all studded with numerous little papillae, the subdorsal ones of the second 

 thoracic and seventh abdominal segments barely larger than the rest, but not elevated 

 at base as in the mature larva ; the papillae are stellate and disposed in both transverse 

 and longitudinal series, the transverse series corresponding to the following subdivi- 

 sions of the segments ; each segment is deeply cut by a transverse incision in the 

 middle aud another less deep in the middle of the hinder half ; each of these hinder 

 subsegmeuts bears a transverse series of simple papillae, while the front half has 

 series of larger papillae which become conical mammae in the laterodorsal region, and 

 especially on the second and third thoracic and seventh abdominal segments. 



Mature caterpillar. Head moderately large, each hemisphere well rounded, at 

 maturity separated from the other at the suture by a broad and rather deep channel ; 

 and produced at the summit into a rather high arch, flattened behind, deepest beneath, 

 the sides scarcely rounded, broadest over the whole lower half, tapering upward, 

 taller than broad ; the triangle very small, taller than broad, reaching about one-third up 

 the head, suture of division starting from the middle of the front, its two arms diverg- 

 ing at once at nearly right angles until they are very nearly as widely separated as the 

 base of the triangle, toward which they then turn in a slightly sinuous course. The 

 whole head is profusely and distinctly punctured and covered with frequent, large, 

 conical tubercles, plump but higher than broad and curving a little downward on 

 the front, forward on the sides and summit ; at maturity those of the posterior edge 

 of the head are larger and slenderer than the others, and the uppermost ones support 

 little ones on their sides, but none are so great as one on the anterior summit of 

 each hemisphere, where it grows larger more rapidly than the others, and Anally 

 becomes a very large, heavy, compound, warty, club-shaped tubercle; all of these 

 tubercles emit a very short, delicate hair. Antennae having the first joint broad and 

 mammiform, the second stout but as long as broad, the third much smaller, cylindrical, 



