PAPILIONIDAE : ANTIIOCIIARIDI. 1845 



the costal margin, heavil}- flecked with black brown scales, which are more profuse 

 next the interior limit of the p.atch at the costal and outer margins, and least heavy in 

 a roundish patch, larger and clearer in the female than in the male, situated on the cos- 

 tal margin just without the darker interior edge; in addition the nervules in this por- 

 tion of the wing are generally more heavily fliecked with brown, and there is sometimes 

 a slender white line down the middle of the interspaces ; the costal margin as far as 

 the tip of the cell irrorate with blackish brown, and the extreme base of the wing, 

 especially beneath, heavily flecked with inky black scales. Hind loinrjs with almost no 

 markings except such as are due to their diaphanous nature ; tliere are, however, tliree 

 small black spots at the tips of the costal and two upper subcostal nervules, the first 

 mentioned the largest, sometimes obsolete, and perhaps more distinct in the female 

 than in the male. 



Beneath : of the same white as above. Fore toinys with the outer limit of the cell 

 marked with a few blackish brown scales forming a dusky bar; midway between it and 

 the apex of the cell a narrow, blackish brown bar descends to the main suljcostal nerv- 

 ure, pretty heavily flecked, especially below, with greenish yellow scales; the costal 

 margin above the cell is irrorate with black as above, but more distinctly, and there is 

 found a faint wash of greenish yellow scales at the extremity of the last median 

 nervnle, following the nervule back for the width of an interspace. Hind loings ex- 

 quisitely marked with greenish yellow, mingled with blackish fuliginous scales in very 

 irregular, rather narrow, vermiculate stripes, in which the dark scales are usually not 

 found at the extreme margins, which thus appear to be washed at their edges with yel- 

 low, the eftect of the whole being a light greenish gray ; these markings may be said 

 to consist mainly of four separate parts : a narrow, transverse basal stripe, more regu- 

 lar than the rest, nearly equal throughout, running from the costal margin midway 

 between the base and tip of the costal nervure in a straight course to the cell, trans- 

 verse to the nervure, and then curving around toward the base of the wing ; a second 

 mucli more irregular stripe crossing the middle of the wing, starting from the costal 

 margin at the tip of the costal nervure, and running in a nearly direct course, curved 

 inward a little at the extremity, to the middle of the inner margin, crossing the ex- 

 tremity of the cell; it generally encloses a small, partly open white spot on the inte- 

 rior side in the first subcostal and on the outer side in the second subcostal interspace, 

 and another one on the outer side at the extremity of the cell ; it also sends a shoot at 

 right angles to its course toward, but only half way to, the base of the inner margin 

 at the median nervure ; this shoot is as broad as the belt itself, and terminates abruptly 

 ■with a little horn thrust toward the inner margin; the third is a large, semi-lunate, 

 strongly arcuate spot, resting by its two horns and a large depending middle tooth 

 upon the outer border at the two lowest subcostal and the last median nervules, and 

 connected with the preceding by a gently sinuous stripe which follows the outer limit 

 of the median nervure; near the tip of tlie costal margin, midway between this outer 

 patch and the mesial belt, is the last portion of the marking, a rather narrow, slender 

 bar depending fi'om the margin, running as far as the middle subcostal nervule, where 

 it nearly meets a slender horn projecting from the middle stripe; the entire under sur- 

 face of the liind wings, and especially of the basal half, is very sparsely clothed with 

 tolerably long, erect, white hairs. Expanse of wings, <? , 40 mm. ; ? , 43 mm. 



This buttei-fly is found in the states tributary to the ^Mississippi — Texas, 

 Missouri, Kansas and Nebraska on the west, Indiana and Illinois (Bureau 

 Co.) on the east, as well as West Virginia on the Kanawha River. It has 

 only been taken at distant intervals, but doubtless extends over a wide ex- 

 tent of country between the Alleghanies and the Great Plains, south of 

 about 40° X. Lat. 



Like the allied species of Anthocharis, it flies early in the spring, appear- 

 ino- in West Virginia in April, but of its early stages or further history we 



