the style of border found in it, and in its next ally, Ptiidnc. There is 

 no other American species with a border like that of the female 

 Narfoi'dii. Further, Interior of both sexes has a large deep roseate 

 discal spot in a heavy brown ring, and often a diluted reddish ring out- 

 side that, and it has no trace of submarginal spots. Its under side is 

 yellow; the males thinly dusted gray, the females rather densely. 

 Harfordii in both sexes has a white discal spot in slight brown pink 

 ring, submarginal spots from a nearly obsolete trace to a bold series 

 over both wings; and either little or no dusting on either wing, or if of 

 the Barbara type, heavily dusted, and of a greenish hue. The sub- 

 marginal spots connect the species with Philodice, but the Harfordii 

 type of male is not P/iilodice, and the border of the female is in an 

 altogether different style from that species. Harfordii may stand be- 

 tween Philodice and hiterior, but not as linking the two species. It 

 should be as a sub-group, with a rank equal to either of the sub-groups 

 which contain these two species. 



Mr. W. G. Wright had several times taken the two forms Harfordii 

 and Barbara in copulation, in 1882 and 1883, and was fully satisfied 

 that the two made but one species, though he had not learned that Mr. 

 H. Edwards had come to that conclusion. Two pairs so taken were 

 sent to me, and now stand in my collection. One of these males is 

 canary-yellow, not black at base, the under side much dusted, the sub- 

 marginal series of spots complete and conspicuous. The other male is 

 pale yellow, with but a trace of the spots on hind wings; the under 

 side moderately dusted; base above black. These are between the two 

 forms. Both females are typical Barbara. 



Mr. Wright was greatly interested in the peculiarities of this species, 

 and kindly undertook to supply me with eggs. These he obtained by 

 tying females in bags over Astragalus crota/aria, which he had observ- 

 ed to be the food plant. Mr. Wright had before this obtained one egg 

 laid on Bur Clover, Medicago denticiilata, but this egg was not laid till 

 the 9 had been confined with the plant six days, and she laid no 

 more. That plant could not be a favorite. The females which laid the 

 eggs on Astragalus were sent me, and they were type Barbara. On 

 13th of July, 1883, came the first lot. Eight larvae hatched on the 

 road, and two eggs. Next day came thirty-one larvae. These had been 

 six days out. The young larvae looked like those of all other Coliads 

 with which I am acquainted. It is not easy to find distinctions be- 

 tween larvae of this genus at any stage, but such as there are consist 

 mostly in variations of the longitudinal bands, and of the black spots 

 under the band, or in some cases, on the body above. Comparing the 

 mature larvae with that of Philodice, Harfordii is more slender, lighter 

 green, the red stripe more continuous, and below it the band is yellow. 

 There is an absence of black sjiots, which are almost constantly found 

 in Philodice under the ]:)and. Ne\'ertheless, of the Harfordii larvae, 



