ANNETTE F. BRAUN 
177 
become deeper toward the apex which is predomiiiaTitly purple. At two-thirds 
of the wing length is a shining silvery fascia. Cilia tipped with white around 
the aj^cx. Hind wings gray, with faint purple reflections. Legs and abdomen 
shining brown. 
Expanse . — 4 mm. 
Localities.- — Peniusylvania (Clemens); Fairfield County, Ohio; 
Powell County, Kentucky; Jackson County, North Carolina; 
Field, British Columbia. 
The description is ba.sed on a specimen bred from mines col- 
lected on Betula glanclulosa and B. fontinalis at Field, British 
Columbia, August 22, 1915. The mine (Fig. 20a) is a rather 
broad serpentine track, gradually increasing in breadth to the 
end, where it measures about 2 mm. across, with a line of frass 
through the middle. The length of the mine varies with the 
species of birch; on the thin-leaved Betula lenta (Fig. 20b) it is 
sometimes twice as long as it is on thick-leaved species, and at- 
tains the maximum breadth of 2 mm. several centimeters before 
the end; often the frass is scattered across the mine for part of its 
length. Similar mines occur also on Betula lutea, but I have 
never seen this mine on Ostrya, where Clemens found it, whence 
the name ostryaefoUella given to the larva. The cocoon is red- 
dish ])i’own. There are two generations in the south, one in the 
north. 
The moth is very similar to the preceding species, but has a 
more distinct fascia and pale collar. 
20. Nepticula paludicola new species 
Tuft clay-colored or fuscous on the face, shading to buff or ochraceous on the 
head; eye-caps and collar shining cream-colored. Thorax and base of fore 
wings shining deep golden with purple reflections; the purple reflections be- 
come more pronounced outwardly, so that the apical area of the wing beyond 
the fascia is deep purple, with the golden color showing only at the bases of the 
scales. A silvery or golden fascia at nearly two-thirds the wing length. Cilia 
concolorous with the wing; their tips silvery around the apex. Hind wings 
gray. Legs shining brown outwardly, silvery beneath, with the posterior 
tarsal segments paler, sometimes the last two or three ochraceous. 
Expanse. — 3.5 to 4.5 mm. 
Localities. — New Jersey, at Retreat, Pemberton, New Lisbon 
and White’s Bog (H. B. Scammell). 
Type material. — Holotype (L'. S. N. M.); three paratvpes (U. 
S. N. M.) 
TRANS. AM. ENT. SOC., XLIII. 
