[153] BIOGRAPHY OF HEMILEUCA MAIA. 21 



I embrace the present opportunity to record the additional fact, 

 that, at Center on Sept. 19, 1870, I saw four specimens of H. Maia in 

 flight at midday ; arid, at a distance not permitting of positive identifi 

 cation, what I believed to be three others. Its occurrence was in a 

 portion of the Center locality which I visited on this occasion only, 

 and am therefore without knowledge of its appearance at this place at 

 other seasons or of its abundance. The flight was rapid, in a direct 

 line, and disclosed the same phenomenon of sudden disappearance as 

 noticed by Mr. Calverly, so that I was unable to effect a capture. Its 

 midday flight is undoubtedly voluntary, for in most of the above 

 instances the moth was first observed so remote from me as to exclude 

 the idea of its being disturbed at my approach. 



Of the larvae referred to in the foot note of page 150, a small number 

 were successfully carried through their several transformations to their 

 perfect state. On the 30th of September, a moth presenting a remark 

 able and beautiful variety was disclosed, which will be found faithfully 

 represented on Plate 8, fig. 1. 



The anterior wings above are wholly black, with the exception of some 

 orange scales on the discal cross-vein and submedian nervules. Beneath 

 is a faint whitish band, one-half line in diameter, consisting of rather 

 long and delicate hairs implanted among the black scales ; if the sur 

 face of the wing be brought in plane with the eye and observed from 

 its outer margin, the white hairs then appear as a distinct white 

 band. In normal specimens of the species, this band on the lower 

 surface is usually about double the width of that of the upper. 



On the posterior wings, the band is quite narrow and only extends 

 to the subcostal nervure, instead of reaching the costal margin as ordi 

 narily. The black of the basal region unites with the discal spot, and 

 the white band is not elbowed behind the cell. Beneath, the band 

 corresponds in outline with that of the upper surface, and at a point on 

 the costa, which it would reach if extended, are a few white hairs. 

 Expanse of wings, 2.6 inches. 

 [Assem. No. 133.] 20 



