399 



Hibernia Dup. (in part), Lep. France, vii (iv), 301, 1829. 

 Anisopteryx Steph., Nomencl. Br Ins., 4:!, 1829; " Cat., ii, 116, 1829." 



Steph., 111. iii, 151, 1831. 



Boisd., Gen. Iuil., 193, 1840. 

 Anysopteryx Dnp., Cat., 235, 1844. 

 Ahophila Steph., Cat. Brit. Lep., 100, 1850. 

 Anisopteryx Lederer, Verb. Bot. Zopl. Ges. Wien, 177, 1853. 



Guen., l'hal., ii, 254, 1857. 



Walk., List Lep. Het. Br. Mus., sxiv, 1162, 1862. 

 PaUacrita Riley, Trans. Acad. Sc. St. Louis, iii, 273, 1875. 



Male. — Antennae subpectinate ; the short tooth-like pectinations ending 

 in long cilia?, varying in size and length in the different species. Palpi very 

 short, not reaching to the front. The head is rather full in front, much as 

 in Phigalia and Hybernia. Fore wings with the costa straight, the apex 

 usually less rounded than in Phigalia and Hybernia; I lie outer edge more 

 oblique than in Phigalia. Hind wings usually more produced toward the 

 apex than in Phigalia. Venation : the costal vein either free or anastomosing 

 with the subcostal (varying in different individuals) ; subcostal cell long 

 and narrow, much as in Hybernia, but rather wider, usually beginning at a 

 considerable distance within the origin of the sixth subcostal venule, rarely 

 beginning at the origin, as in the figure on plate 4. The chief difference 

 from Hybernia is in the origin of the median veins being situated much 

 beyond the middle of the wing. Hind legs as in Phigalia. 



Female. — Differs chiefly from Phigalia in the wings being almost 

 entirely aborted, the rings of the abdomen smooth (autumnata) or armed with 

 spines {vematd). The body is quite hairy in vernata, the scales being shorter 

 and closer in autumnata. 



Egg, larva, and pupa. — The eggs are either oval-cylindrical or subcorneal 

 and truncate. The larva is smooth, cylindrical ; the head smooth, rounded, 

 not notched, and as wide as the body. In A. autumnata, there is a pair 

 of rudimentary abdominal legs on the sixth abdominal segment. The cater- 

 pillar pupates a few inches under the earth. The pupa in the male (plate 13, 

 fig. Ga) is much slenderer than in the female. 



Both species of Anisopteryx differ from the European ascularia in the 

 fore wings being much less rounded at the apex, and in the hind wings being • 

 much more produced toward the apex. 



While Mr. Mann has shown, with much ability, from a consideration 

 of the imaginal characters, that we have two well-marked and perfectly 

 distinct species, Professor Wiley has carried the matter further, and judges, 



