22 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



ARGYRESTHIA UNDULATELLA Chambers. 



I'latc V, fi^. !'. 



Argyresthia nndulatella Chambers, Can. Ent., VI, 1874, p. 10; YII, 1S75, ji. 145. 



Chalciopeundulatella Chambers, Can. Ent., VI, 1874, p. 10. 



Polyxo undulateUa Chambers, Can. Ent., VI, 1874, p. 10. 



AllmnmundulateUa Chambers, Can. Ent., VI, 1874, p. 10. 



Argyref<tMa austerella Chambers (not TieWer), Can. Ent., IX, 1877, p. 72; Bull. 



"it. S. Geol. Surv., IV, 1878, p. 130.— Dyar, Bull. 52, U. S. Nat. Mns., 1903, 



No. 6457 (part). 



Labial palpi white, shaded externally with brown. Fai-e white be- 

 low, brownish above. Head white. Antennte annulated with black. 

 Thorax and patag-ina white. Forewings white, with base of costal edge 

 brownish and with costal and apical parts rather freely dusted w'ith 

 brown scales; from beyond the middle of costa runs a dark brown 

 fascia inwardly ol^lique, which does not quite reach the dorsal edge; 

 at apical third is a similar, but not so well defined, oblique dark brown 

 streak, which is connected with and diffused into the nearly ])rown 

 apical part of the wing in which are two or three white costal dashes 

 and a thin black line along the apical edge. Hindwings light fuscous. 

 Legs white, tarsi aniutlated with Itrown. Forewings with veins 7 and 

 8 stalked. 



Alec/' expauM. — 9 mm. 



Habitat. — Kentucky (Chambers). 



This species was made a synonym of Zeller's austerella by Chambers 

 himself, though he noted the differences of his species from Zeller's 

 very striking figure of austerella, and it has since been regarded as 

 such; but Chambers's description and a comparison of his and Zeller's 

 tj^pe in the Museum of Comparative Zoology and in the U. S. National 

 Museum clearly proves that the two species are distinct, and Cham- 

 bers's old name must be revived. 



The most striking ditl'erence from austerella is the total al)sence of 

 the tirst costal dark streak at basal third, found in Zeller's species. 



ARGYRESTHIA AUSTERELLA Zeller. 

 Plate V, fig. 10. 



Argyresthia austerella Zeller, Verb. zool. bot. Gesell. Wien, XXIII, 1873, p. 305. — 

 * Chambers, Bull. U. S. Geol. Surv., IV, 1878, p. 130.— Dvar, Bull. 52, U. S. 

 Nat. Mus., 1903, No. 6457. 



Labial palpi white, shaded with fuscous. Face lead colored. Head 

 white. Antenme white, with black annulations. Thorax white. Fore- 

 wings Avhite, with striking dark-brown marking; entire costal edge 

 and apical part of the wing mottled with dark brown, in which the 

 ground color appears as small dots and dashes, especiallj' in the apical 

 part. 



