291 



Legs, brown, spurs and tarsal joints whitish, libite also streaked with white. 



Exp. al., 10>»™. 



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



I'ype, (?, Mus, TVlsm. 

 This species evidentlj' approaches very closely to quadrilineeUa Chamb., having the 

 same ciiaracteristic four Hues on the basal portion of the witig; it has, however, 

 four nietallic 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 

 uuiforni in the expause of the fore-wings. 



Cosmopteryx unicolorella sp. n. 



rail)!, brown, with shining white lines along their upper and under sides. 



AiileiuKi', brown, with the basal jjint enlarged outwardly, a slender silvery-white 

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

 mi<ldle ; 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 antenna; along the 

 upper edges of the tegulie. 



Face, shining silvery. 



Fore-xci»gs, 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, aud 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 while dash passes upwards 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 xcings 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""". 



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



'J'ypC} (?) Mus. WIsm. 



GENERAL NOTES. 

 BLEACHING WINGS OF LEPIDOPTERA. 



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

 solution of tbe chloride of lime, chlorine being, of course, the bleaching 

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

 has been added, to get rid of tbe slight deposit of liine. Tbe 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, tbe wings decolorizing immediately 

 18578 -]^o. 9 3 



