1282 THE BUTTERFLIES OF NEW ENGLAND. 



ovate, nearly twice as long as broad, armed within by an inferior, corneous rod, 

 strongly curved upward in the middle and furnished with a very lon^, thorn-like den- 

 ticle before the middle and at the tip two or three smaller ones. 



Egg. About a fourth broader than high, well rounded, the base very broadly trun- 

 cate, being more than three-quarters the greatest width, the summit with but the nar- 

 rowest depression; surface clean with a rather coarse, microscopic tracery, the floors 

 of the cells with gr.anulations. 



Caterpillar at birth. Head large, smooth, broader than high, of equal depth 

 throughout, but thinning above, well rounded, with a slight median depression. Basal 

 mammiform joint of antennae large but not high; third joint cylindrical, moderately 

 slender, more than twice as long as broad ; fourth minute, the bristle twice as long as 

 the third joint. 



Body largest at the second thoracic segment, behind which it tapers gradually and reg- 

 ularly; first segment transversely ridged with a pair of very large, lateral tubercles 

 directed outward and upward, and provided with six or eight scattered, hair-bearing 

 warts. The ot her appendages, consisting of slender, tapering bristles, enlarged at the tip 

 to an oval club, broader than the base of the bristle, seated on simple papillae or compound 

 tubercles, arranged as follows: a distant subdorsal series of minute papillae on the 

 anterior portion of the second thoracic to eighth abdominal segments, each bearing a 

 very short bristle not more than one-fourth the length of the segment; a lateral series 

 of conspicuous tubercles, largest on the second and third thoracic and seventh and 

 eighth abdominal segments, centrally placed and provided with three or four hairs, one 

 conspicuously longer than the rest, considerably exceeding the length of a segment, and 

 distinctly clubbed ; a suprastigmatal series of tubercles with a cluster of hairs, not more 

 than two or three in the middle segments ; and a similar inf rastigmatal series with 

 three or four hairs to a tubercle. 



The lower series are not shown, nor the middle tubercles of the lateral series, in the 

 figure (76 : 28) we have copied from Edwards, and the lateral series is represented too 

 high; in the last respect, Gruber's figure is equally faulty. 



Mature caterpillar. Head rather small, broadest at the upper limit of the ocellar 

 field, scarcely narrowing on the sides, which are slightly compressed, the summit 

 broadly arched and in the middle slightly depressed at the suture; considerably 

 broader than high, deepest at the middle of the ocellar field, becoming much shallower 

 above, the front appressed and even a little hollowed, the triangle being sunken, the 

 sutures slightly impressed; triangle small, scarcely so high as broad, the summit 

 rounded, reaching rather less than half way up the front, the lower outer corners 

 sunken. Head rugulose, with irregul.ar, tortuous, transverse, finely impressed lines, 

 and covered profusely with very short hairs less delicate nest the hinder edge. First 

 joint of antennae, large, mammiform; second, very short; third, about two and one- 

 half times longer tlian broad, tapering very slightly in the basal half, beyond equal; 

 fourth, minute. Ocelli six in number, of which four form a pretty strongly curving 

 row, its convexity forward and a little upward, at regularly increasing distances apart 

 from above downward, the lower two separated by about their own diameter, a fifth, 

 below these at the hinder base of the antennae, on a line with the lower two and dis- 

 tant from the lowest as far as the latter is from the next liut one above it ; the sixth 

 is behind the curved row, at about equal distances from its uppermost and lowermost 

 member and forming, with them, slightly more than aright angle; ocelli of about 

 equal size and somewhat prominent, those of the arcuate row the most so. Labrum not 

 very large, quite narrow, the front well rounded, its middle very sharply and angu- 

 larly excised, nearly to the base; mandibles moderately large, quite broad and stout, 

 the edge straight and smooth, the inner maxillary palpus rather larger than the outer, 

 both very short, closely resembling each other, the ultimate joint very small, about as 

 long as broad, the penultimate rather longer than broad and slightly larger at tip than 

 at base. Spinneret rather large, moderately long, tapering. 



Body tumid on the anterior half, including the thoracic and first two abdominal 

 segments, the arch being about equally curved at either extremity ; behind this 



