NORTH AMERICAN LEPIDOPTERA. 103 



from a figure should have uo standing anjAvay. I find that Maassen 

 also .■^ays that this is the Southern form of thysbe. 



H. ruficatKlis Kirby, Fu. Bor. Am. iv, 303, Sesia ; Wlk., C. B. M. Lep. Het. 

 viii, 82, Sesia = thysbe ; Clem. Journ. Ac. N. Sci. Ph. iv, 129 = thysbe : Morr., 

 Synopsis 1862, 149. Sesia ; G. & E., Pr. E. S. Ph. v, 149, 175, Hsemorrhagia ; 

 Tr. A. E. S. ii, 181 = thysbe; Grt., Buff. Bull, i, 1Q.'> = thysbe ; Couper, Can. 

 Eut. iv, 205, Sesia; Bil., Sp. Gen. Het. i, 371, Macroglossa ; But!., Tr. Zool. 

 Soc. Lond. ix, 521, Hemnris ; Strk., Lep. 109, pi. xiii, fig. 1 "J, ; id. 140 = uni- 

 formis; Hulst, Bull. B. E. Soc. ii, 40 = thysbe; Grt., Can. Ent. ix, 131 ; Beth., 

 Can. Eut. xi, 152, Sesia ; Maassen. Stett. Ent. Zeit. 1880, v, 41, p. 51 = thysbe. 



Kirby's descri])tion is as follows : " The body yellow olive, under- 

 neath pale yellow. Antenure black ; primaries reddish brown, hya- 

 line part half divided towards the base, with a costal bar, covered 

 with yellow olive hairs at the base ; underneath the costa, the poste- 

 rior margin and the nervures are dark ferruginous; there is also a 

 yellow stripe on the inner side of the base ; secondaries hyaline in 

 the disc ; base externally and costa yellow ; internally the base is 

 ferruginous ; underneath the dark part of the wing is ferruginous 

 and the base parts yellow ; two first segments of the body yellow 

 olive, two next black, the rest ferruginous with pale lateral spots. 

 This species appears to be the American representative of Sesia fiici- 

 fonni-% which it greatly resembles, but differs in the color of the tail 

 and tlie base of the secondaries." 



H. pyranms Bd., Sp. Gen. Sp. Gen. Lep. Het. i, 372, Macroglossa. 



The following is a translation of Boisduval's description : It is a 

 little larger than our bombyliformis, of which it has the habitus. The 

 four wings are transparent, cut with black on the nervures as in the 

 other species of the same group ; the primaries have the base black 

 with olivaceous hair ; the border is moderate, ferruginous brown ; it 

 has in addition, an oblique patch of the same color at the end of the 

 cell. 



The secondaries are largely ferruginous at the inner margin, the 

 outer border is straight and blackish brown. 



The thorax is olive green, as is the abdomen ; the latter is traversed 

 at the middle with two black segments, of which the latter is joined 

 })osteriorly by a dorsal spot of the same color ; the anal tuft is olive 

 green above, laterally bordered with black. 



Beneath, the contour of the wings is rust red, with the breast and 

 palpi white ; the belly is ferruginous and with very small fascicles of 

 yellow hair at the incisions. It lives in the Northern United States. 



