WILLOW LEAF-MINERS. 581 
with roseate in the white markings, I can perceive no tendency in the 
eight specimens of this imago, that Mr. Walsh has so liberally sent me, 
to merge into the ornamentation of salicifungiella. Certainly the char- 
acter of the markings is the same in each, and it is possible that we have 
here but a single species. The imago occurs August 3-13. Bred by 
Mr. B. D. Walsh." 
Moth. — Fore wings red, irregularly marked with whitish. Near the base is a 
whitish band, powdered with dark fuscous, which curves across the fold, including 
the inner margin, and reaches the middle of the wing ; the part beneath the fold is 
tinged with reddish and sometimes with pale brownish. Adjoining this band exteri- 
orily is a dark brownish-red, curved band, which does not cross the fold. On the 
costa are three small white spots, one near the tip, one about the middle and one ex- 
terior to the brownish-red band. The margin of the wing is powdered with dark 
fuscous cilia red. Hind wiugs dark gray ; cilia grayish-fuscous. 
Head reddish. Antennae black, annulated with white. Labial palpi pale red ; 
second joint with two blackish rings ; terminal joint with three black rings and a 
black dot at the base, extreme tip black. (Clemens.) 
58. Gelechia, undescribed species (Chambers). 
Imago unknown. The larva sews together willow leaves at great 
elevations in the Kocky Mountains. 
59. Marmara salictella Clem.* 
The following account of this moth is copied from Clemens's posthu- 
mous work on the Tineina: 
The larva mines the young branches of the yellow willow tree. I 
* It leaves its mine at maturity to weave a white semi-transparent cocoon within 
some crevice of the bark of the tree on which it feeds or upon the ground. The ex- 
terior of the cocoon is covered with little froth-like globules, which resemble minute 
pearls. 
The imago rests with the front part of the body elevated, and, I believe, the -fore- 
feet applied to the breast, like the members of the genus Tischeria. The antennas 
are held extended at the side of the head, and have a constant trembling motion. 
Larva. — The larva is much flattened, and the segments separated by deep incis- 
ions, particularly on the sides. The head is extremely thin, circular, with a peculiar 
appendage in front of the mandibles similar to that found in the larva of Lithocolletis 
of the second group, which it likewise resembles in form. Like these it has three 
feet and three abdominal prolegs and one terminal pair, all very short. 
Moth.— Hind wings setiform. The subcostal vein is faint, attenuated, and simple. 
The discal vein free, central and two-branched. The median vein simple. Fore- 
wings narrowly lanceolate. The disk long, narrow, and closed. The subcostal vein 
is well defined from the base to the first marginal branch, which appears to be a con- 
tinuation of it. But from the origin of the first marginal branch the vein is greatly 
attenuated, and is deflected towards the middle of the wing and subdivides into two 
branches opposite the point at which the first marginal branch attains the costa. 
The two branches into which the subcostal divides are delivered one to the costa 
just behind the tip and the other midway between this and the costal end of the first 
marginal branch. The median vein is two-branched, and is well defined from the 
base to its branches, all of which are attenuated. The posterior branch is'short, 
