NO. loOG. REVISION OF MOTH GENUS ARGYRESTHIA—BUSCK. 21 



ARGYRESTHIA PEDMONTELLA Chambers. 



Plate V, fig. 7. 



Argi/restliia pcdmontella Chambers, Bull. U. S. Geol. Surv., Ill, 1877, p. 131; IV, 

 1878, p. 130.— Dyar, Bull. 52, U. S. Nat. Mus., 1903, No. 6466. 



Labial palpi, face and head white; antennas annulated with brown. 

 Thorax white, patagina brown. Forewings white, strongly suffused 

 with dark brown on the costal and apical parts; dorsal part l)elow the 

 fold only slightl}" sprinkled with tlark scales; on the costal edge from 

 basal third to apex is an irregular series of darker brown spots inter- 

 vened by pure white dashes; around apex and along base of dorsal 

 cilia is a thin blackish-brown line, and on the middle of the dorsal 

 edge is a large, oblique, dark brown spot shaped like a parallelogram 

 reaching across the light dorsal area to the more densely dusted costal 

 part. Cilia light fuscous. Hindwings light fuscous. Legs shaded 

 with dark brown. Forewings with veins 7 and 8 separate. 



Ala?' expanse. — 13 ami. 



IJahitat. — Colorado (Chambers). 



This is nearest to helangerella and rReieUa^ differing from both in 

 the lighter costal part of the forewing and in the form of tlie dorsal 

 spot. 



ARGYRESTHIA BOLLIELLA, new species. 

 Plate V, fig. 8. 



Labial palpi and face golden white; head white; antennae with dark- 

 brown annulations. Thorax and ])atagina white. Forewings white, 

 with dark-brown markings as follows: A broad, inwardly oblique, 

 dark-brown fascia from beyond the middle of the costal edge, some- 

 times narrower, and diffused on the middle of the wing, but reaching 

 and widening out on the dorsal edge; a large, ill-defined dorso-apical 

 spot, covering apical fourth except along costal edge, which is white; 

 a series of small, irregular brown streaks along the costal edge and a 

 sparse sprinkling of brown scales on the entire wing; sometimes a 

 larger dot on dorsal edge before the fascia. Hindwings dark fuscous. 

 Legs golden white; tarsal joints shaded with brown. Forewings w^th 

 veins T and 8 separate. 



Alar e,rpanm. — 10-11 mm. 



Hahitat. — Texas (Boll). 



Type.~C^i. No. 9949, U.S.N.M. 



Named in honor of the collector, the late Jacob Boll, whose beauti- 

 fully preserved specimens, collected more than a quarter of a century 

 ago, are still among the most valuable material in the few important 

 collections of American Microlepidoptera. 



The species is nearest to undaJateUa Chambers, but somewhat 

 larger, without the l)astal costal dark streak and with the fascia 

 reaching across the wing to the dorsal edge. 



