144 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



This collection also contains the following species heretofore described: 

 ColeopJwra artemisicotella Cham., from Kelso's Cabin, Gray's Peak ; La- 

 rerna grandisella Cham., Georgetown; Laverna albocapitella f Cham., 

 Georgetown. 



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

 The head and palpi 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 wiugs. 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 cruci/erarum auct. 



Anesychia discostrigella Cham., Manitou. 



Aetote bella 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 1rijida) 7 which pre- 

 sented greater differences than many of those that are recognized as 

 distinct species in this country and in Europe. 



Blepharocera gen. nov. — This genus is allied structurally to Dasycera 

 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 Dasycera), recurved, overarching the vertex; tongueof moderate length 

 and scaled; antenna? 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 Dasycera 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 rained 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 Dasycera. Costal vein long, near the mar- 

 gin; subcostal attenuated toward the base and reaching the margin 



