446 



witliin the distinct, l)lack, discal dot; tiii- iudistincl, regularly-scalloped, 

 cxtradiscal line is bent outward opposite the discal dot, and thence goes, 

 without niucli ola curve, to the inner edge; the corresponding line on the hind 

 wini'S is regularly curved, tiiough not much so, and the scallops are regular 

 and well rounded ; where the scallops touch the venules, there is a fine, while 

 dot. Beyond this line, the margins of both jiairs of wings are paler than 

 within. Beneath, of the same hue as the under side of Tcphrosia caniidnria, 

 being pale ash, the t()re wings mottled with smoky spots, and the hind wings 

 clear, and conse(pienlly lighter. The discal dots are distinct on l)oth wings, 

 but there are no other markings, 



Length of body, 9, O.GO ; of fore wing, 9, 0.80; expanse of wings, 



l.GO inches. 



Colorado Territory, August 6 (Mead) ; Clear Creek Canon, Colo , August 



(Uhler, Hayden's Snrvey). 



This species is respectfully dedicated to Prof F. V. Ilayden, in charge 

 of th(^. United States Geological Survey of the Territories. 



HEMEROPHILA Stephens. Plate 5, fig. 6. 



Eenm-ophila Stepb., Cat. Br. Le.p., 125, 1829. 

 AcldnUa Treits. (iu part), Scbui. Eiir., vi (ii), 5, ISi'iS. 

 Botirmia Dnp. (in part), Lep. France, vii (iv), 327, 1829. 

 Boisd. (lu ]iait). Gen. lad., 196, 1840. 

 H.-Scb., ,Scbm. Eur., iii, 76, 1847. 

 BemcropWii Lederer, Verb. Bot. Zool. Ges. W^ieu, 177, 1853. 

 Gneu., Plial., i. 216, 1857. 

 Walk., List Lep. Het. Br. Mns., xxi, 315, 1860. 



Head square in front, not being very broad. Palpi large and stout, thick 

 at the end, ascending somewhat, and extending well in front of the head. 

 Male antennae heavily pectinated almost to the tip. Fore wings broad, rather 

 long; costa straight or a little convex; outer edge either very oblique, bent 

 in the middle, scalloped, with the apex acute, siibfalcate, or the wing is short 

 and broad, with no bend in the outer edge Hind wings large, deeply scal- 

 loped ; outer edge either moderately or very full. Venation : l)ut five subcostal 

 branches, the first very long; no snl)eostal cell. Hind til)ia^ long; tarsi two- 

 thirds as long as the til)ii;e. Coloration dull reddish-ash, with very oblicjue 

 lines, with a broad blackish shade beyond the extradif-cal line on both wings. 



The species of Heineropliila are readily distinguished by the peculiar 

 markings, the dark, deeply-scalloped wings, the very broadly-pectinated 

 antennae, and the large size of the species. 



