no.". BOMB YCINE MOTHS OF NORTH AMERICA— PACKARD. 117 



All the segments from No. 2 bear each six tubercular processes crowned with a pencil of black 

 spines. The under side is honey-yellow; the feet and abdominal legs red at the base, the other 

 joints black. Length 60 mm.] 



HEMILEOCA MAIA (Drury). 



Plate XXI, figs. 2, 3; XXII; LII, figs. 1, 2; LX, figs, 12, 13; LXVIII, fig. 11. 



[Attacus maia Drury, 111. Ex. Ent., II (1773), pi. 24, fig. 3.] 

 [Bombyx proserpina Fabricius, Syst. Ent. (1775), p. 561.] ' 



Imago. — Fifteen $ , four $ (and many others observed). Head, body, and antennae of 

 a rich velvety deep brown-black, collar white, tips of femora reddish. 



The fore wings vary a little in the obliquity of the outer edge, it being usually quite oblique 

 and the apex turned up. The fore wings are black-brown, with a median white band which 

 is either wide and inclosing the discal spot, or narrow and only partially surrounding it. The 

 line begins at the inner angle of the wing or within the angle on the inner edge, and ends before 

 quite reaching the costal edge. 



In some examples (one from Colorado) the white band is so wide as to leave only the base 

 and outer edge of the wing black, thus approaching vars. nevadensis and artemis. Discal spot 

 black, often subhyaline, and inclosing a curved or bent linear white spot varying somewhat in 

 width and shape. 



Hind wings as in those of anterior pair; where the wlute band is very wide on the fore 

 wings it is so on the hinder pair. In one extreme the band is very narrow, interrupted by the 

 ocellus and irregular in width, in others it is wider than the width of the [band of] fore wing. 

 In one <? [ab. lintneri] captured at Albany, N. Y. (fig. 11, PI. LXVII), photographed by the late 

 Dr. Lintner, there is no wlute band on the fore wings; the ocellus is distinct, but on the hind 

 wing a white band incloses the ocellus. The ocellus of the hind wing is more variable than in 

 the fore wing; in one example it is very much reduced in size, and the linear white line within 

 it is minute. Beneath, the wings are marked as above. 



The smallest individual hi my collection is from Intervale, N. H. (Glover Allen). 



Habits. — In Providence one was flying October 15, on a warm sultry day. Also a male 

 flying on an exceptionally warm day, at Rehoboth, Mass., October 12, 1901. 



Prof. J. M. Aldrich writes me as follows regarding the habits of H. maia in Brookings, 

 S. Dak., under date of September 21, 1891: "I send you to-day a package containing two lots 

 of eggs of Hemileuca maia. I have hatched over a dozen of the moths in the last week. They 

 pair 'and lay very soon after emerging. The larvae feed on our commonest wild willow which 

 grows along the. streams (Salix longifolia) ." 



[The following data are from an article by Dr. J. A. Lintner: 



Metamorphic periods.— For convenience of reference and comparison, the periods required for the several changes 



embraced in the transformations of //. maw are herewith tabulated: 



Days. 



From hatching to first molt 8 



From first molt to second molt 7 



From second molt to third molt 9 



From third molt to fourth molt 8 



From fourth molt to fifth molt 13 



From fifth molt to maturity 6 



From maturity to pupa 5 



From pupa to imago 58 



Duration of larval state 56 



Duration of papul state 58 



From the egg to the imago 114 



Prolonged pupation. — Much the larger portion of the pupae of the above colony survived the winter. On the fol- 

 lowing June 4 another moth emerged, and thence toJuly 4 five additional ones appeared. An examination of the pupre 



'[Abbot and Smith, Nat. Hist. Lep. Ins. Georgia, vol. I (1797), p. 99, describe and figure this species as Phalxna proserpina. It is represented 

 as feeding on Qucrcus rubra var. ambigua Solander MS., a plant which is not the true Q. rubra, but has the leaf form of Q. marilandica. Sudworth 

 has referred it to Q. digitata, but it does not appear to belong there.] 



