324 



Victoria, Vancouver [sland, July (Crotch, Mus. Comp. Zool.) ; California 

 i Edwards). 



The long palpi, the square, angled hind wings, the silken brown-gray 

 wings, and the peculiar markings on the under side, the colors reminding one 

 el' the under side of a Glaucopteryx, and the very ^lender abdomen, charac- 

 terize this peculiar species, which is named in honor ot M. (lueuee. 



ASTHENA Hubner. Plate 4, fig. 2. 



dethena lliilm., Vera ., :U0, 1818. 



Acidalia Treits. (in part), Schm. Ear., vi (i), :!, 1827. 



Dap., Lep. Franco, vii (iv), 224, 1829. 

 "Cymatida Sndi.ll'., Hull. 8. I. Mosc, 18, 1837." 

 Addalia Boisd. (in part), Gen. Iixl., 227, 1840. 



H.-Scb. (in part), Sclun. Eur., iii, 12, 1847. 



Steph., Cat. Lep., 221, 1850. 

 Cidaria Lederer (in part), Verb. Hot. Zool. Ges. Wien, 253, 1853. 

 Asthena Guen., Phal., i, 434, 1857. 



Walk., List Lep. Het. Br. Mus.,xxii, 673, 1861. 



Head narrow in front; sides of front parallel; eyes large, globose. Palpi 

 very slender, not reaching the front. Male antenna' simple, as in Acidalia. 

 Wings much as in Acidalia, but shorter, not subfalcate; apex much rounded; 

 costal region rather wide. Hind wings much rounded, sometimes with a very 

 slight angle. Venation much as in Acidalia; a single subcostal cell; the 

 diil'crences from Acidalia are mainly due to the differences in the shape of 

 the wings. Hind legs well developed; tibiae long and slender, the spurs 

 unusually long; tarsi not much more than half as long as the tibia?. Abdo- 

 men of male very Ions? and slender. Coloration : white or ochreous, with 

 four to six transverse, sinuous, darker lines. 



This genus differs very slightly from Acidalia, and mainly in the more 

 arched costa of the fore wings, the broad costal region, and the rounded apex. 

 On these accounts, I originally mistook our albogilvaria for a Corycia. 



Larva. — "Caterpillars short, moniliform, swollen in the middle, very 

 attenuated on the anterior segments; flattened beneath and carinated on the 

 sides during locomotion; head very small and globular; living exposed on 

 trees. Chrysalides contained in leaves or in moss." — Guenwe. 



