OF WASHINGTON, VOLUME XVIII, 1916 153 



Habitat: Evaro, Mont. 



Type: Cat. No. 20340, U. S. N. M. 



Bred by Mr. Brunner from Larix occidentalis. 



Argyresthia eugeniella, new species. 



Labial palpi and face golden. Head white. Antennae dusky without 

 darker annulation. Thorax white; patagia dark golden brown. Fore- 

 wing dark golden brown with a violet sheen and with darker grown trans- 

 verse reticulation; the dorsal part below the fold is white, slightly mottled 

 with dark brown and with a large illdefined brown spot on the edge just 

 beyond the middle; cilia dark brown at apex; whitish outside the white 

 dorsal area. Hindwings light silvery fuscous with ochreous fuscous cilia. 

 Abdomen dark fuscous with white underside. Legs golden with indistinct 

 dark brown annulations at the joints. Venation typical: Veins 7 and 8 

 in the forewings stalked. Alar expanse: 7-8 mm. 



Habitat: Key West, Fla. 



Foodplant: Eugenia buxifolia. 



Type: Cat. No. 20209, U. S. N. M. 



Collected and bred by Mr. E. A. Schwarz in March 1912. The 

 smallest described American species of the genus, very close to 

 A. deletella Zeller, but smaller and darker in color. The white 

 cocoon is double with an open network outer layer and a tough 

 closely woven inner cocoon. 



Argyresthia arceuthobiella, new species. 



Labial palpi golden. Face silvery white. Antennae golden with sharp 

 black annulations. Tuft on head and thorax white; patagia golden yellow. 

 Forewings golden yellow with a narrow leadcolored costal edge; a narrow 

 longitudinal central white streak and a narrow white dorsal edge; apical 

 third of wing overlaid with leadcolored scales; cilia golden with silvery 

 costal and dorsal tufts; extreme apex black, edged on both sides with 

 white scales. Hindwinps light silvery fuscous. Abdomen white. Legs 

 white with dusky, faintly annulated tarsi. Alar expanse: 7 mm. 



Habitat: Mistletoe, Oregon. 



Foodplant: Libocedrus decurrens. 



Type: Cat. No. 20208, U. S. N. M. 



A very striking little species, reminding of the larger Zelleria 

 haimbachi Busck in color and pattern. Venation typical: Fore- 

 wings with veins 7 and 8 stalked. 



Argyresthia libocedrella, new species. 



Labial palpi, face and head light lemon yellow. Antennae silvery white 

 with blackish brown annulations and with basal joint golden. Thorax 

 and forewings dark golden yellow with two conspicuous dark brown dorsal 

 spots, one on the middle of the dorsal edge and one at the basal fourth; 



