PAPILIONINAE : JASONIADES GLAUCUS. 



1291 



dered witli pale greenish scales; the black edging of the cell is .sometimes enlivened by 

 a median line of bluish scales; fringe as on the upper surface. 



Abdomen above blue black; sides yellow to the tip, with an inferior, lateral, black 

 stripe, broadening in the middle and tapering toward base and tip, reaching as far as 

 the terminal segment; beneath yellow, with two subventral, narrow, black stripes; 

 edges of the valves of the male (35: 31-34) blackish, their sides yellow; the valves 

 stout, but little tumid, broadly but irregularly rounded, nearly twice as long as broad, 

 a little ridged along the middle, the tip slightly protuberant ; the lower border is 

 slightly sinuate, the upper a little full; the arniiiture consists of .a slender rod nearly 

 straight in its basal half, just before the end of which it emits an inward curving and 

 backward directed, slender, t.apering spur, half as long as itself; the apical half of the 

 rod is arcuate, bent strongly upward and a little forward, becoming expanded apically 

 into a vertical, appressed, prominent lamina, bearing three strong, unequal denticula- 

 tions directed downward, the lowest the largest and a little twisted. Ju,st beneath the 

 hook of the centrum is a large, fleshy, nearly colorless mass supporting a compressed, 

 broad lamina extending to the tip of the hook; and beneath this is a corneous, slender, 

 cylindrical, elongated member (scaphium of Gosse) curved a little downward, nearly 

 equal, but expanding and flexible at tip, reaching in repose the inner surface of the 

 valves at about the middle of the lower surface. 



Length of tails of hind wings, 11.5 mm. 



Variations and aberrations. In one female from the White Mountains (July 7) 

 the yellow of the upper surface, particularly of the lower half of the fore wings, is 

 slightly tinged with an orange flush. 



Specimens from Alaska agree in coloration and markings with New England speci- 

 mens in every particular, although they are slightly smaller than White Mountain spec- 

 imens, and these are generally smaller than the average specimens from other parts of 

 New England, and are apt to be duskier. The fore wing of one male from the White 

 Mountains measures but 44.5 mm. and that of one female but 42 mm., while in the 

 largest female I have from Alaska, it reaches but 46.5 mm. ; one female from 

 Alaska measures only 36 mm. in the length of the fore wing. Gosse says that New- 

 foundland specimens are not only smaller than continental specimens but paler. 

 Couper speaks of those from Anticosti as darker than normal, like the Alaskan and, 

 indeed, all others from the high north. 



Many years ago T saw in some collection, but failed to note where, an hermaphro- 

 ditic specimen from the south, in which the wings of the left side and the left half of 

 the body were female, and that J. glaucus glaucus, while the right half was male and 

 normally yellow ; the valves were developed only on the right side. It was perhaps 

 the same individual which is figured by Edwards, and first described by him in the 

 Transactions of the American entomological society (ii: 207). 



Egg (66: 1). Minutely rugulose, when seen under a strong lens; color, when laid, of 

 the green of the upper surface of birch leaves; afterward it becomes uniformly 

 flecked with reddish brown, giving it a brownish yellow appearance. Micropyle 

 rosette .237 mm. in diameter, composed in general of a multitude of very minute, 

 usually roundish, sometimes oval, angular cells, nearly uniform in size, not increasing 

 in magnitude outwardly, and averaging .014 mm., excepting at the centre (68:18), 

 where, in a space .05 mm. in diameter, the cells, though otherwise very similar, are not 

 half that size. Height, 1.1 mm.; breadth in the middle, 1.4 mm.; breadth at base, 

 1.16 mm. 



