144 BULLETIN UNITED STATES GEOLOGICAL SUEVEY. 



This collection also contains the following species heretofore described : 

 ColeopJwra artemisicolella Cham., from Kelso's Cabin, Gray's Peak ,• La- 

 verna grandisella Cham., Georgetown; Laverna albocapitella ? Cham., 

 Georgetown. 



I am not absolutely certain of the correctness of this identification. 

 The head and jialpi in these two specimens are rather pale-gray than 

 white, and there are other minute differences. One of the two speci- 

 mens is badly rubbed, and the other is so mounted as to nearly destroy 

 the thorax and prevent any satisfactory view of the wings. But I be- 

 lieve it to be albocapitella. That species has heretofore been described 

 only from Texas. Thus another species is added to those common to 

 Texas and Colorado, and this one is found at a considerable elevation 

 in the mountains and north of "the Divide". 



Laverna miscecolorella Cham., heretofore described from Texas only, 

 now from Central Colorado. 



Plutella cruciferarum auct. 



AnesycMa discostrigella Cham., Manitou. 



Aetote hella Cham., heretofore known only from Texas. This speci- 

 men is labeled "Denver". 



Butalis immaculatella Cham. — Originally described from Texas. 

 While the differences between the species of Butalis which have been 

 described in this country by Dr. Clemens and by me are as great as 

 those which separate the recognized European species, I doubt very 

 greatly whether they are all, or perhaps even half of them, really distinct. 

 The differences which separate them are chiefly in ornamentation, and 

 are not great. I have bred specimens of B. matulella Clem, (the larva 

 of which mines leaves of the " hogweed" [Ambrosia irijida), which pre- 

 sented greater differences than many of those that are recognized as 

 distinct species in this country and in Europe. 



BlepJiarocera gen. no v. — This genus is allied structurally to Basycera 

 perhaps as closely as to any other, but is altogether unlike it in colora- 

 tion. There are no maxillary palpi ; the labial are slender (more so than 

 in Basycera)^ recurved, overarching the vertex; tongue of moderate length 

 and scaled; antennjB not reaching the tips of the wings by about one- 

 third of the length of the latter, with the basal joint a little thicker than 

 the stalk, which is slender and rather densely clothed in the male with 

 long cilia (longer than in Basycera and more thickly) ; forehead rounded ; 

 face but little retreating ; head smooth. Cilia of both pairs of wings 

 rather long. Fore wings broadly lanceolate. (Having but a single 

 specimen, one fore wing of which was ruined in denuding it, and not 

 wishing to injure the other, I can give no satisfactory account of its neu- 

 ration.) Hind wing narrower than fore wing, lanceolate, more elongate 

 in proportion to width than in Basycera. Costal vein long, near the mar- 

 gin; subcostal attenuated toward the base and reaching the margin 



