291 



Legs, brown, spurs and tarsal joints wliitisli, tibiae also streaked with wbite. 



Exp. aL, 10>nn\ 



Hahitat, North Carolina. Two specimens from the late H. K. Morrison. 



Type, $ , A£us. Wlsm. 

 This species evidently ai)proache8 very closely to quadrilineella Chamb., having the 

 same characteristic four lines on the basal portion of the wing ; it has, however, 

 four metallic spots, not three, and a conspicuous white streak on the costa not 

 mentioned by Chambers ; moreover, its size is considerably greater than Cham- 

 bers's species, and it is observable that all the species of this genus are extremely 

 uniform In the expanse of the fore-wings. 



Cosmopteryx unicolorella sp. n. 



Palpi, brown, with shining white lines along their upper and under sides. 



Antennw, brown, with the basal joint enlarged outwardly, a slender silvery-white 

 line on their upper sides along the basal half, very coarsely scaled beyond the 

 middle ; the four apical joints white, preceded by a broad, brown band, which is 

 preceded by one, and after short intervals by three more white joints. 



Head and thorax, brown, with three silvery-white lines ; one from the top of the head 

 runs along the middle of the thorax, two from the bases of the antennae along the 

 upper edges of the tegulse. 



Face, shining silvery. 



Fore-wings, rich brown; a slender bluish-silvery line from the base along the costa; 

 its outer half turning slightly downwards reaches one-fourth of the wing length ; 

 an equally slender silvery-white line reaches somewhat farther along the dorsal 

 margin, and between the ends of these are two short detached silvery streaks ; 

 across the middle of the wing is a beautiful purplish, steel-colored, metallic fas- 

 cia, not quite reaching the extreme costal or dorsal margin ; beyond it (without 

 any orange or yellow band, as is usual in this genus) are two large spots of the 

 same color, the first dorsal, the second beyond this costal, from which a conspic- 

 uous white dash passes iipwards through the costal cilia ; the extreme apex is 

 fuscous, with another conspicuous white dash in the cilia below it, preceded by a 

 marginal streak of metallic scales ; cilia, brownish-fuscous. 



Hind icings and cilia, brownish-fuscous. 



Abdomen, brown, with two rather silvery bars before the pinkish-white anal tuft. 



Legs, brown ; the tibiae streaked and the hind tarsi spotted at the joints with silvery- 

 white on their outer sides; spurs whitish with conspicuous silvery- white bands 

 around the legs at their bases. 



Exp. al., 14"^n\ 



Hahitat, Siskiyou Co., Cal. A. single ^ taken in the beginning of June, 1872. 



Type, ^, Mus. Wlsm. 



GENERAL NOTES. 



BLEACHING WINGS OF LEPIDOPTERA. 



By the Dimmock process the wings are first acted upon by a saturated 

 solution of the chloride of lime, chlorine beiug\of course, the bleaching 

 agent. Afterward they are washed in water to which hydrochloric acid 

 has been added, to get rid of the slight deposit of lime. The process is a 

 slow one for thickly- scaled, dark-colored insects, and it occurred to me to 

 try a mixture of the chloride and acid, liberating the chlorine gas. The 

 method was absolutely successful, the wings decolorizing immediately 

 18578— Xo. 9 -3 



