AMERICAN LKl'lDOPTKRA. 349 



light gray, scarcely with blackish scales basally, but these increasing towards 

 outer margin ; central cross-line very faint, most sharply defined by a black dot 

 on inner margin ; marginal lines l}lackisli; discal spot faint; beneath as above, 

 paler, markings faint. 



Coloriulo, from Mr. Bruce. Feinale only. 



40. I»TER»T.«A n. gen. 

 Type vnrUmi Hulst. 



Palpi moderate, porrect, rough scaled; tongue developed; front 

 broad, rounded, scaled; antennje bipectinate in both sexes, the pec- 

 tinations in 9 short; thorax r()u<;h scaled ; abdomen smooth ; hind 

 tibia' swollen ; fore wings 11 veins, 1 1 wanting; hind wings 5 unde- 

 veloped, 6 and 7 separate, 8 separate from cell ; fore wings even, 

 hind wings triangular, waved on outer margin. 



I have the 9 <>"'y ; the % almost certainly has fovea below on 

 fore wings, and probably has hair pencil on hind tibiiie. 

 Species. — P. cariosa Hulst, u. sp. 



I*. cari<>sa n. sp. — Expands 38 mm. Palpi, front and thorax blackish gray. 

 Abdomen with each segment dark fuscous, becoming black posteriorly, the ex- 

 treme posterior edge being light gray ; fore wings gray, pretty generally overlaid 

 with blackish, the gray showing more plainly on anterior middle field : basal line 

 fine, blackish, not very ])ronouuced, somewhat dentate, generally rounded, the 

 veins basally more blackish ; outer line fine, black, dentate, subparallel with 

 margin; a fine, evenly scalloped, whitish line in submarginal space; mai'gin 

 scalloped and with a distinct, even, black marginal line, the black at the points 

 extending out on the veins ; hind wings color of fore wings, with the outer line 

 of fore wings extended across; submarginal white line faint, broken; margin 

 scalloped, edged with a distijict black line; beneath light fuscous, with dark fus- 

 cous ]wi)perings. becoming entirely dark fuscous on a])ical portion of fore wings. 



Soda Si)rings, Cal., August, from Dr. Behrens. 



41. IXAL.A n. gen. 

 Type desperariu Hulst. 

 Palpi rather short, porrect, rough S(;aled l)elow ; tongue developed ; 

 front broad, rounded, short scaled ; antennse of % bipectinate, apex 

 simple, pectinations long, filiform ; thorax smooth, somewhat hairy 

 below ; abdomen .-imooth, slightly tufted at end ; legs long, slender, 

 all spurs long and slender; hind tibiae slender, without hair pencil, 

 with all spurs ; fore wings with fovea below in % , rather broad, 

 even, rounded, 12 vein.s, 10 on 9, 11 from cell ; hind wings with 

 subcostal fovea below at base, and with fold beneath on inner margin 

 with fringe of hairs within, 5 undevelo})ed, (i and 7 separate, <S .-sepa- 

 rate from cell. 



Species. — /. de><perarla JIulst. 



TRANS. AM. KNT. SOC. XXIII. SEPTEMBER. 189(5. 



