NO. 150(1. REVISION OF MOTH GENUS AROYRESTHIA—BUSCK: 19 



An identical cotype, received from Chambers, is in the Museum of 

 Comparative Zoology. 



The species is very near conjiKjelhi Zeller, but differs by the dorsal 

 dark' spot not reaching' the costal dark part of the wing. 



ARGYRESTHIA MONTELLA Chambers. 



Anjip-esthla montdla Chamber.^, Bull U. S. (leol. Snrv., Ill, 1877, p. l.iO; IV, 

 1878, p. 130.— Dyak, Bull 52, U. S. Nat. Mus., 1903, No. 6464. 



Face and ]>al])i yellowish; tuft and thorax white; antenuic fuscous, annulated 

 with white; forewings fuscous, the apical portion indistinctly dusted with white, and 

 with indistinct short white streak.s before the apex, each dark margined before; the 

 dorsal margin is white as far as the fold, and very faintly dusted; no dorsal fuscous 

 streak; there is a row of fuscous scales around the base of the cilia, which at the 

 apex have, to the naked eye, the appearance of a minute spot. Hindwings, cilia, 

 and upper surface of the abdomen pale grayish; undersurface of the wings grayish 

 fuscous and tuft whitish; legs whitish, the tarsi stained with yellowish. 



Ed'jxinxe of vungs. — 7 lines [about 15 mm.]. Among scrub-oaks at 

 Edgerton [Colorado] in July. 



The above is Chambers description ; the species is known to me only 

 from the unique type [No. 1111] in Museum of Comparative Zoology 

 on which I made the following note in 1902: 



Near heldngerdla, but larger, and without the dark dorsal sjiot in the white part of 

 the wing; with an extreme apical black line as in pedmonfr/la, from which it also 

 differs by the absence of the dorsal streak. 



ARGYRESTHIA PLICIPUNCTELLA Walsingham. 



Plate V, lig. 4. 



Argi/reKtJiia pUcipam-Uila Walsinouam, Insect Life, III, bS90, p. 119; IV, 1891, p. 

 386.— Dyak, Bull. 52, U. S. Nat. Mus., 1903, No. 6465. 



Labial palpi, face, and head white, antennge annulated with brown. 

 Thorax white, patagina light fuscous. Forewings white, suffused, and 

 sprinkled with grayish brown, especiall}' in costal and apical parts, 

 while the dorsal part below the fold is nearly pure white. Arotuid 

 the apical edge is a not very prominent darker line and on the fold is 

 a rather indistinct, somewhat darker brownish spot, not touching the 

 dorsal edge. Hindwing light ocherous fuscous. Legs white, tarsal 

 joints slightly tipped with brown. Forewing with v'eins 7 and 8 stalked. 



Alar expanse. — 10 mm. 



Hahitat. — California and Oregon. 



I examined the types of this species at Merton Hall, England, and 

 obtained through the liljerality of my hosts one of the cotypes from 

 Mendocino County, California, from which the present description and 

 figure is made. It is an obscure, poorly marked species, which, how- 

 ever, can not well ])e mistaken for anv of the other described forms. 



