150 



and sericeata are based on 9 specimens and both show a straighter 

 t. p. line with very little bend in the submedian fold as com- 

 pared with correllata, based on a 5 specimen ; this difference 

 we believe to be sexual and not specific and not even entirely constant 

 in either sex, as a long series before us from Vineyard, Utah, shows 

 considerable variation in the course of this t. p. line in both sexes; 

 we believe we are correct in referring both sericeata and correllata 

 as synonyms of colata Grt. 



We figure a pair of specimens from Utah which agree with the 

 types of correllata and colata respectively, and also a pair from Mon- 

 achee Meadows, Tulare Co., Calif., which shows a still greater curve 

 in the t. p. line and probably represents the form of the High Sierras. 



Itame simpliciata sp. nov. (PI. XXI, Fig. 15). 



Front whitish, thorax and primaries whitish to pale mouse gray, evenly 

 sprinkled with brown atoms; t. a. line obscure, strongly angled outwardly be- 

 low costa, then slightly incurved to inner margin ; t. p. line prominent, almost 

 upright, with a small outward tooth on vein 5 and an outward bend above inner 

 margin, accentuated by a dark spot above vein 5 and more heavily marked 

 in the submedian fold, followed except at costa by a dark shade; s. t. line only 

 marked for a short distance below costa by a dark shade-line ; fringes pale 

 outwardly, darker at base. Secondaries smoky, whitish along inner margin 

 with smoky speckles, fringes white outwardly. Beneath primaries smoky brown 

 with the apex broadly light gray; secondaries light gray sprinkled with brown 

 and with an obscure curved brown postmedian line. Expanse 24 mm. 



Habitat: Paradise, Arizona (Mch. Apr.) 2 $. Types, Coll. Barnes. 



The species is allied to pallipennata B. & McD. but is more even 

 in color with a straighter t. p. line and no postmedian line on upper 

 side of secondaries. 



Plataea trilinearia astrigaria var. nov. (PI. XX, Fig. 1). 



Median area of wing pale olivaceous bordered by white bands as in the 

 type form; remainder of wing very pale olivaceous, scarcely darker than 

 the white bands in consequence of which these latter are very improminent; 

 s. t. line faint, white, just perceptible on the slightly darker ground ; an oblique 

 white discal streak ; fringes white with very prominent blackish streaks opposite 

 the veins. Secondaries white, slightly peppered with dusky atoms. Expanse 5 

 36 mm., 9 33 mm. 



Habitat: Olancha, Inyo Co., Calif. 1 $, \ 9. Types, Coll. Barnes. 



A very striking race easily recognizable by its pale coloration and 

 entire lack of white marks on the veins ; it may prove to be a good 

 species but for the present we treat it as a desert race of trilinearia. 



