116 



Jyp^Sj $ 9> Mus. TTlsin. 



Far. B. — Another variety has brownish-gray fore-wings, the whitish-ocherous stripe 

 being entirely, or almost entirely, obliterated, a number of scattered dull whitish- 

 ocherous scales giving a mottled appearance to the almost unicolorous fore-wings. 

 Some specimens of this variety are very small, their expanse reaching only 9'"°i_ 

 Habitat, Shasta County and Siskiyou County, Cal. 

 Ti/pes, $ 9 , Mils. Wlsm. 



Described from nine males and five females taketi in July and August, 1871. 



I should certainly have regarded these three forms as specifically distinct had it not 

 been for a careful examination of the genital appendages, which appear to be pre- 

 cisely similar. Moreover, my specimens of all the forms were taken at approximately 

 the same time and place. 



Butalis albilineata sp. u. 



Aniennw, brownish-fuscous. 



Palpi, white, dusted with brownish-fuscous, especially on the outer side. 



Head, brownish-fuscous, with some whitish scales on the face and abont the eyes. 



Thorax, brownish-fuscous, touched with white on the jiatagia. 



jpbre-?fi»</s, brownish-fuscous, with a strong white line of even width running from 

 the middle of the base to the apical margin below the apex: the extreme costa 

 very narrowly whitish beyond the middle ; cilia brownish-fuscous with a few 

 white scales along the costa and beneath the apex. 



Hind- wings and cilia, $ dark purplish-fuscous ; $ brownish-fuscous. 



Abdomen, brownish-fuscous above, white beneath. 



Legs, brownish-fuscous, with a good deal of white about the tarsi and on the under- 

 side. 



Exp. al, 10™™. 



Habitat, Arizona. 



Tti2)es, $ ^,Mus. JVlsm. 

 One male and two females received from the late H. K. Morrison. 

 This species approaches very closely the European B. schlcichiella Z. 



Arotrura, gen. n. 



["aporpor = plow, oupa^ = tail.] 



Type Arotrura eburnea Whm. J 9« 



I 



Fig. 22. — Arotkuka ebuknea Wlsm. Nenration and uncus, a, Anterior wing; &, posterior wing- 

 enlarged (original). 



Antenna-, simple throughout; basal Joint liattened, elongate. 



Labial palpi, ])orvoct, sliglitly recnrved ; basal joint clothed with closely appressed. 

 scales; apical joint two-thirds as long as the second, tapering, but somewhat stout. 



