1852 BUTTERFLIES BEYOND NEW ENGLAND. 



series of spots that are fouud upon the fore wings are liere repeated; the extra-mesial 

 series as a narrow and nearly equal belt interrupted only by black nervures, bent be- 

 yond the cell, running from the costal margin, its interior limit at the middle of the 

 margin, in a direction straight toward the anal angle, a direction which is bent beyond 

 the cell so as to run to the inner margin, its outer limit removed from the anal angle 

 by the width of an interspace; this belt is externally sharply defined, but interiorly is 

 powdery; the outer limit is again lunulate and the spots in general are longer than 

 broad, especially in the middle of the wing, and from the character of the interspace 

 more or less cuneiform; the outer point of the cell is marked by a slight powdery 

 patch of yellow scales; the outer series of yellow spots consists of widely separated, 

 distinctly lunulate, clearly defined spots, their outer limits removed from the margin 

 by the width of half an interspace; they are yellow, but occasionally show a slight 

 tendency, especially in that in the costo-subcostal interspace, to be suffused with 

 orange ; that in the lowest median interspace becomes altered to a transverse, long oval 

 stripe; at the anal angle is a large ocellus, composed of a large, central, black spot, 

 seated on the margin surrounded by a broad annulus, yellow below and orange above; 

 between these two rows of spots the interspaces are more or less heavily flecked with 

 bright blue scales which, above the ocellus at the anal angle, form a distinct semi-annu- 

 late lunule; the fringe black brown interrupted in the interspaces opposite the spots 

 with yellow. 



Beneath : with the same colors as in polyxenes, and the markings of the upper sur- 

 face mainly repeated, the males and females again not differing; all the yellow spots, 

 however, especially upon the hind wings, but with the exception generally of the other 

 spots of the fore wings, more or less heavily bathed in orange, especially mesially, the 

 orange being frequently surrounded to a greater or less extent with yellow, which is 

 here less l)rilliant than above. Between the two rows of spots of the hind wings tlie 

 black ground is sprinkled sparsely and with tolerable uniformity with pale greenish 

 yellow scales which are supplanted Ijy lunules or sagittate spots of bright blue 

 scales, more densely clustered a little beyond the outer margins of the extra-mesial 

 spots and enclosing between them and the spots the black ground in the shape of 

 slender equal bars of a deeper black than most of the ground ; ocellus much as above. 

 Expanse of wings, (J, 74 mm. ; $ , 80-88 mm. 



This interesting butterfly differs from P. polyxenes, to which it is most closely allied, 

 in that both sexes are alike, corresponding to the colors and pattern of the male of 

 polyxenes ; but in addition the spots of the mesial band on the fore wings are more or 

 less orange, aud on the hind wings below are orange, broadly capped and margined 

 with yellow ; while the tails of the hind wings are only about one-third as long as in 

 polyxenes, and the outer margin of the fore wings is distinctly convex. 



The following descriptions of the early stages are those of Mr. Edwards, slightly 

 modified in form : 



Egg. Spherical, flattened at base ; pale yellow. 



Caterpillar. First stage. Head black, pilose. Body cylindrical, the anterior seg- 

 ments thickest, and a little arched; color pale black; a white patch on dorsum, on 

 fourth and part of third abdominal segment ; the spines are in six rows, one sulxlorsal 

 and two on either side ; these are black and rise from pale yellow tubercles ; each send- 

 ing out a few black hairs. Length, 2.5 mm. 



Second stay e. Head black, shining; with a white spot in front and one on either 

 side. Body black-brown, the patch white and extending well down either side; the 

 spines as before, their bases pale yellow. Length, 6.4 mm. 



TTiird stage. Head as at previous stage. Body black, the patch as before ; white 

 marks over the feet; the bases of the spines chrome-yellow. Length, 10 mm. 



Fourth stage. Head as before. Body black, with narrow, white stripes at the 

 junctions of the segments; white also on the sides of third and fourth abdominal 

 segments, but not on dorsum; white points on the last segment and over feet; the 

 yellow at bases of spines is brighter. Length, 20.3 mm. 



Last stage. Head oljovate, either yellow green or pale green, marked in front by two 



