958 TIIK BUTTERFLIES OF NEW ENGLAND. 



Fore tibiae a little more than live-eights the length of the hind tibiae, the tarsi 

 either scarcely (<J) or nearl.v one-third (?) longer than the tibiae, but tibiae and 

 tarsi combined about equal in the two sexes ; apical appendages of the last tarsal 

 joint eitlier like those of the other legs ( ? ) ; or the claws connate, forming a single, 

 conical, appressed hook, broad at base, scarcely curving, longer than normal, and the 

 paronychia and pnlvillns wanting (^); in other respects the fore legs do not difler 

 m.atcrially in structure from the other legs, but they are shorter, not quite so crowded 

 with spines, those of the tibiae being very few and scattered, and the tibial spurs, 

 although not small, are naked. Middle tibiae scarcely four-lifths the length of the 

 hind tibiae and armed beneath with a double row of short, very distant, delicate 

 spines, and at the tip with a pair of not very long, scaly spurs. First joint of tarsi 

 nearly equalling all the rest combined, the second, third and fourth diminishing regu- 

 larly, the Hfth scarcely so long as the second, all furnished beneath with a mass of 

 long and slender, crowded, tapering spines, mostly confined to two rows beyond the 

 basal joiut, the apical ones of each joint longer, spur-like; claws small, moderately 

 slender, rather strongly, but not regularly, curved, being bent before the middle and 

 slightly hooked at the tip, tapering, finely pointed, and having at the base a large, 

 rounded, slightly produced, compressed lobe; paronycliia double, the superior lobe 

 nearly as long as the claw, tapering, slender, but little curved, the inferior nearly as 

 long and slender, nearly equal, bluntly pointed, curving a little inward and strongly 

 forward ; pulvillus wanting. 



Male abtlomiual appemlages with the lateral alations extended backward as parallel, 

 tapering spines, slightly buUate at base, the lateral arms excessively slender, long 

 and delicate, beut about the middle. Clasps of unusual breadth .and uniformity, termi- 

 nating in a very blunt angle and a double point. 



Egg. Twice as broad as high, flattened, turban-shaped, the upper surface almost per- 

 fectly flat and extending far toward the strongly convex sides; lower surface scarcely 

 arched; sides covered with a tracery of subtriangular or triangular cells with com- 

 pressed, equal walls, considerably thickened but scarcely elevated at the points of 

 convergence of the lines of the triangles. Above, the cells are smaller and more 

 rounded (subcircnlar or oval), the walls thicker and lower and entirely uniform in 

 heiglit, with no such enlargements at tlie junction of lines. The raicropyle rosette is 

 a suulcen basin of entirely similar cells, but ou a diminutive scale and forming only a 

 delicate tracery. 



Caterpillar at birtli. Head generally wholly exserted, deeply cleft posteriorly 

 between the hemispheres, a little augulate at its widest part; frontal triangle very 

 large, considerably more than half as high as the head and much higher than broad. 

 Body triangularly subcylindrical, the dorsal region narrowly depressed, the first 

 thoracic segment more arched, the last abdominal segment greatly flattened, with a 

 transversely oval, sunken, central, chitinons area. Legs rather long and slender with 

 slender, curving, pointed claws. Whole surface of the body scabrous M'ith minute stel- 

 late papillae. The' following is the arrangement of papillae and auuuli in which all the 

 serial hairs are blunt tipped : first tlioracio segment with a strongly arcuate series of 

 eight or nine papillae, bearing forward-curving, spiculiferous hairs ; on either side an 

 oblique row of three similar papillae, aud, enclosed posteriorly in the arcuate embrace of 

 the first mentioned, a number of larger and smaller chitinous anuuli in three short, trans- 

 verse rows, the hindmost contaiuiug also a pair of laterodorsal, hair-emitting papillae. 

 Second thoracic segment with a pair of laterodorsal papillae, anteriorly placed and 

 bearing forward-curving, long hairs, a similar lateral pair, and a single anterior infra- 

 lateral circlet besides tlie appendages to be mentioned. The eighth abdominal seg 

 ment has a conspicuous, strongly arcuate series of numerous papillae, the concavity 

 forwards, the papillae irregularly ranged and eich bearing a backward sweeping hair. 

 Common to nianj' segments are the following: a laterodorsal series of closely anterior,- 

 small annnli from the third thoracic to the seventh abdominal segments inclusive, high, 

 central, laterodorsal papillae, with a very long, backward sweeping and curving hair 

 on the second thoracic to the eighth abdominal segments, those ou the thoracic seg- 



