441 '» 



within the distinct, black, discal dol ; the indistinct, regularly-scalloped, 

 extradiscal line is benl outward opposite the discal dot, and thence goes, 

 withoul much of a curve, to the inner edge ; the corresponding line on the hind 

 wings is regularly curved, though nol much so. and the scallops arc regular 

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

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

 within. Beneath, of the same hue as the under side of Tephrosia canadaria, 

 being pale ash, the lore wings mottled with smoky spots, and the hind wings 

 clear, and consequently lighter. The discal dots are distinct on both wings, 

 but there are no other markings, 



Length of body, 9, 0.60; of fore wing, 9, 0.80; expanse of wings, 

 1.60 inches. 



Colorado Territory, August A (Mead ) ; Clear Creek Canon, ( 'olo . August 

 (Uhler, Hayden's Survey). 



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

 of the United States Geological Survey of the Territories. 



HEMEROPHILA Stephens. Plate 5, fig. 6. 



Eemerophila Stepb., Cat. Br. Lep., 1-25, 1829. 

 Aeidalia Treits. (in part), Scbm. Enr., vi (ii), 5, 1838. 

 Boarmia Dun. (in part), Lep. France, vii (iv), 327, 1829. 

 Boisd. (in part), Gen. [ad., 196, 1840. 

 H.-Scb., Schm. Ear., iii, 76, L847. 

 Hemcrophila Lederer, Verh. Bot. Zool. Ges. Wien, 177, 1853. 

 Guen., I'baL, i. 216, 1857. 

 Walk., List Lep. Het. Br. Mas., xxi, 315, 18G0. 



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, subfalcate, 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: lint live subcostal 

 branches, the fust \qy\ long; no subcostal cell. Hind tibiae long; tarsi two- 

 thirds as long as the tibia 1 . Coloration dull reddish-ash, with very oblique 

 lines, with a broad blackish .-hade beyond the extradiscal line on both wings. 



The species of Hemerophila arc readily distinguished by the peculiar 

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

 antenna', and the large size of the species. 



