140 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



L. hamadryadella Clem. (Proc, Acad. ISTat. Sci. Phila., 1859). — Very 

 common east of Kansas, and not uncommon mining scrub-oaks in Colo- 

 rado, I did not breed it, but the mine is easily recognized. I did not 

 . meet with it at a higher altitude than 6,000 feet. 



X. cincinnatiella Cham. (Can. Eut., vol. iii, p. 149). — The remarks above 

 made as to L. liamadryadella apply also to this species. The two, so far 

 as my observation goes, are nearly always found together ; frequently in 

 the same leaf. They are, however, very distinct, and so are their mines. 



LWwcollefis, next to GelecMa, is usually a genus of numerous species ; 

 but it is less so in Colorado than I have found it elsewhere. 



Lyonetia alniella Cham. (Cin. Quar. Jour. Sci., vol. ii, p. 303). — This spe- 

 cies up to 10,000 feet is more numerous in individuals than any other. 



Phyllocnistis populiella Cham. (Cin. Quar. Jour., vol. ii, i3. 106). — Com- 

 mon mining poplar-leaves in the Mississippi Yalley at an altitude of 400 

 feet, and in Colorado mining aspen-leaves up to about 11,000 feet. 



P. ampelopsiella Cham. (Can. Ent., vol. iii, p. 207). — Common in Ken- 

 tucky, altitude 400 feet, and in Colorado, altitude 6,000 feet. 



Eurynome. — In the Cincinnati Journal of Science, I have described a 

 species from Colorado, allied to Bucculatrix and to Phillonome, as E. 

 luteella. The neuration of that species was not examined. " In other re- 

 spects, this species appears to be congeneric with it. The tongue and 

 maxillary palpi are absent, while the labial palpi are moderately devel- 

 oped, with the second joint longest, and thus they differ from Buccula- 

 trix. In repose, the antennee are carried forward, diverging so as to form 

 a wide letter V. They are a little more than half as long as the fore 

 wings, with the stalk simjile, and the basal joint, which is a little en- 

 larged, covered with a small eye-cap and partly concealed by the long, 

 loose scales of the roughened vertex, which extend down between the 

 eyes, but do not cover the face. Fore wings lanceolate ; hind wings nar- 

 rowly lanceolate. The neuration of the fore wings in the species de- 

 scribed below resembles that of Bucculatrix cratwgij as figured in Ins. 

 Brit., vol. iii, p. 8. The subcostal vein gives off two branches to the cos- 

 tal margin before the end of the cell, another just behind it, and is fur- 

 cate before the tip, one branch going to each margin. The median 

 divides into three nearly equidistant branches; the fold is well indicated, 

 and the submedian distinct; the cell is closed; and the costal vein at- 

 tains the margin before the middle. In the hind wings, the cell is closed, 

 (or nearly so); the subcostal furcate before the apex, one of the branches 

 going to each margin ; the median subdivides into three nearly equidis- 

 tant branches, and the submedian is indicated. 



U. alhella n. sp. — Snowy white ; the hind wings with a silvery tinge, 

 and three faint, pale, ocherous, minute spots on the fore wings, two of 

 which are on the fold (one of them near the hind margin of the wing), 

 and the third is at the end of the cell. (Sometimes these spots are in- 



