NVMIMIAMXAK: THE GENUS P()LV(;()NIA. 311 



joiiiL >li,i^iiUy lonuer lliau the olliors. Claws viM-y siiuill and delicate, tapering to a 

 delicate point, not strongly curved ; paronychia ijilid. one Ijlade needle like, scarcely 

 curved, fully as long as the claw, very delicate and tapering; the other not half so 

 long, coarser but tapering and curving toward the other; pulvillns wanting. 



Abdomen compressed, fusiform, compact, the upper f)rgan of tlie male appendages 

 very inconsi)icuous ; hook small, simple, no longer tlian the 1)ody, tapering and l)nt 

 little arclied. Clasps small, al)out twice as l)road as long, sub(|ua<lrate, the upper 

 outer angle more or less produced as an incurving lobe, tiie basal process of the upper 

 edge long and slender, depressed, tapering, bent over so that those of the opposite 

 sides often cross and at the same time are directed l)ackward so as to sinnilate the 

 hook of the upper organ ; interior finger long and slender, directed upward travers- 

 ing the middle of the clasp, smooth, hugging the clasp and seldom surpassing it. 



Egg. of much the general shape of that of Envanessa; taller than broad, broadest 

 near the base, tapering \ipward with a slightly sw^elling curve, the summit broad and 

 nearly flat; furnislied with a few regular, straight, e(|uidistant, compressed, prominent, 

 longitudinal ril)s, which inci'ease in height as they approach the summit, being most 

 clewited as they cross its border; they extend a little way over the summit, terminat- 

 ing rather al)ruptly ; surface between the ribs sniootii, broken up into cells l)y delicate 

 cross lines. 



Caterpillar at birth. Head smooth, not spined, with a few long curving hairs. 

 Body uniform, the first thoracic segment with a transverse corneous plate, the others 

 with transverse ridges on the anterior portion , on which are seated minute warts, each 

 giving rise to a long hair; these Avarts are arranged on either side in a sxibdorsal row 

 (becoming laterodorsal on the thoracic segments) placed a little in advance of the 

 middle, a supralatei'al row placed posteriorly, a laterostigmatal row beneath the sub- 

 dorsal, and a stigmatal row posteriorly, one to a segment in each row; and also a pair 

 of infrastigmatal bristles just in advance of the middle of each segment. 



Mature caterpillar. Head rather small, subijuadrate on a front view, the sides 

 scarcely tumid, the summit slightly depressed in the middle, a little full in the ocellar 

 region, scarcely deeper below than above, rather broader than high; the triangle 

 half as high again as broad, reaching more than half way toward the summit; head a 

 little swollen at the upper outer portion of each hemisphere and produced, bearing a 

 stout long spine, directed upward, a little outward and slightly forward, encircled in 

 the middle by a stellate arrangement of five spreading, upturned, elongated, stout, 

 smooth, tapering spinules, bluntly rounded at tip like the main spine, and unlike it, 

 bearing at the extremity a pretty long fine hair. The liead is also beset with numerous 

 elongated, cylindric but slightly tapering, smooth tubercles, l)luntly rounded at tip and 

 emitting a pretty long delicate hair ; those near the hinder edge are longer than tlie 

 others, and a similar one is found just in front of and a little Avithin the summit spine, 

 and a still larger one in the middle of each hemisphere. Antennae having the basal 

 joint not very large, hemispherical, second and third cylindrical, of equal diameter, 

 the second half as long as broad, the third nearly three times as long as broad, emit- 

 ting a delicate hair several times longer than itself and bearing on the inner side a 

 minute foni'tli joint scarcely visible. Ocelli six in number, five arranged in a broad 

 curve whose convexity is foi-ward, the second, thii-d and fourth counting from above 

 closely croAvded, Avith scarcely any space betAveen them ; the first is separated from 

 the second by its oavu diameter and the fifth from the fourth by neai'ly tAvice as 

 much; the sixth is nearly in, but a little in advance of, the centre of the circle upon the 

 circumfei'ence of AA'hich the others are seated ; the first and sixth are inconspicuous, 

 slightly elevated; the others are A-ery prominent, higher than their OAvn diameter, the 

 summits hemispherical, the sides straight; the diameter of all is about equal. Labrum 

 small, deeply and abruptly cleft in the middle so as almost to appear to be made of 

 tAvo halves, Avhich are longer than broad and have their outer sides Avell rounded. 

 Manilibles very small, as broad as long, the edge square and smooth. Maxillary palpi 

 four-jointed, the first and second joints of equal diameter, the first very short, tlie 

 second nearly as long as broad, the third not half its diameter but nearly half as long 



