PjVPILIONINAE : IIERACLIDES CRESPHONTES. 



1337 



veins of this part of tlie winss marked in l)liick; tlie oval yellow palcli of the tail as 

 above, i)ut .sometimes enlarged. 



-ibdomeii above rather narrowly black; below and on sides, and encroaching some- 

 wliat above, uniform yellow, of the tint of the under surface, the apical segment 

 •wliolly yellow ; valves of male (35 : 21-23) testaceous and smooth externally, with well 

 rounded surfaces, geutly tumid, the upper apical portion curved gently inward, the 

 lower border gently, the upper more strongly arcuate, the apex broadly and very regu- 

 larly rounded; armature consisting of an arcuate lamina, subparallel to the lower and 

 outer margin, reaching nearly to the tip, and there connected by a corneous, thread- 

 like lamina to the upper base, the edge of the first-named portion beiug pretty well but 

 irregularly crowded with very small, moderately stout, recurved teeth; the lamina 

 highest uext tip of valve. 



Tails of the hind wings $ , 13.5-15 mm., ? , 15-16.5 mm. 

 Described from 53,3 9 . half uf them from New York and Massachusetts. 



Egg (66: 3). Surface -without apparent markings, but with a texture like bluish 

 ground glass overlaid completely by a thin and uniform gummy secretion which gives 

 it a scabrous appearance, with numerous, irregularly distributed, short, microscopic 

 filaments, the whole of a dirty brownish yellow. Hubbard describes it as "smooth and 

 pearly in lustre, with a dull red or reddish yellow tinge." The micropyle (68 : 19) con- 

 sists of four or five rounded cells with coarse walls, in a cluster about .025 mm. in 

 diameter. Height of egg, 1.1 mm. ; breadth 1.3 mm. ; at base, 1 mm. 



Caterpillar. First stage (73: 1). Head (79 : 62) black becoming brownish yellow 

 posteriorly, the space between the true and false frontal triangle whitish. Hairs dark 

 ferruginous, as long as the width of the triangle, sparsely distributed, and pretty uni- 

 formly, excepting at the extreme summit. Body blackish brown mottled rather ob- 

 scurely with umber, the first thoracic segment dull lemon yellow, and the second, 

 third, seventh and eighth abdominal segments of the same color, as also to a certain 

 extent the dorsal parts of the llrst abdominal segments; the mammiform prominences 

 are pale but dull umber, the large ones of the first thoracic segment dull lemon yellow; 

 hairs dark ferruginous, sometimes luteo-ferruginous. Length, 3.5 mm. ; breadth of 

 head, .8 mm. ; of Last abdominal segment, G mm. 



Second stage. Head (79 : 63) yellowish brown, more or less infuscated, darkest in 

 the upper half of the triangle, the ocellar field and a large frontal spot on either side 

 above. Body brown of a variable intensity and more or less mottled with darker and 

 lighter or wanner shades, saddled with a white oblique blotch on either side, meeting 

 above, mostly upon the third, but above also on the fourth and below also on the 

 second abdominal segments ; a similarly colored roundish blotch on the summit and upper 

 half of the sides of the eighth abdominal segment, most conspicuous on the sides, 

 encroaching also on the adjoining segments but especially on the seventh. The promi- 

 nences a^i in the first stage but somewhat less pronounced. So, too, the shape of the body 

 is much the same but with a tendency toward an inflation of the thoracic segments. 

 Length, 8 mm. ; breadth of head, 1.2 mm. Described from specimens preserved in 

 glycerine. 



Third »tage. Head (79 : 64) uniform glistening smoky brown, the mouth parts paler. 

 Body dark brown with the same markings as in the preceding stage and with the same 

 prominences, but these very much reduced in height, and more nearly uniform, bluntly 

 rounded, those of the first thoracic segment, however, still the largest and the only 

 ones higher than broad. There is also a slender and at first rather vague, oblique, white 



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