ELACHISTA. 255 
Zell.? Alis anticis (¢) griseis, fascia fere recta albida obsoleta ante 
medium, maculis duabus ante apicem oppositis, quarum apices postice 
spectant in fasciam conjunctis, apice rolundato, ciliis griseis, circa api- 
cem externe albidis (@ alis anticis ad basim saturate griseis, postice 
nigris, fascia maculisque albis distinctis, macula costali non pone ma- 
culam dorsalem); capite griseo, fronte argenteo-grisea, palpis dilute 
griseis. Exp. al. 4 lin. 
Head grey. Face silvery-grey. Palpi pale grey. Antenne fuscous. 
Anterior wings (of the ¢) grey, with an indistinct nearly straight 
whitish fascia before the middle, and an angulated fascia (composed of 
two whitish opposite spots, with their apices sloping posteriorly) to- 
wards the apex; a somewhat rounded dark hinder marginal line runs 
through the grey cilia, which at the apex are whitish. (In the 2 the 
anterior wings are dark grey at the base, and beyond the first fascia 
black; the first fascia is whiter and more distinct, and the opposite 
spots towards the apex are much whiter and more distinct ; the costal 
spot is scarcely posterior to the dorsal spot.) Posterior wings grey, 
with paler cilia. 
Not uncommon in May and August, generally occurring near 
hedges. ‘The larva feeds in the upper part of a slight-growing 
grass (perhaps Poa trivialis) in April and July. 
16. subnigrella, Dougl. Ent. Trans. ii. n. s. 210. pl. xviii. f. 1 
(1854). Alis anticis (4) griseis, fascia obligua albida obsoleta ante 
medium, fascia angulata albida obsoleta ante apicem, quasi e maculis 
duabus composita, ciliis apicis truncati griseis (9 alis postice satura- 
tioribus, fascia maculisque latioribus, albidioribus, macula costali dis- 
tincte post maculam dorsalem); capite griseo, fronte argentea, palpis 
griseis. Exp. al. 34 lin. : 
Head grey. Face rather silvery. Palpi pale grey. Antenne fus- 
cous. Anterior wings (of the 3) dingy grey, with an indistinct rather 
oblique whitish fascia a little before the middle, being nearest the base 
on the costa; towards the apex is a whitish angulated fascia, composed, 
as it were, of two indistinet opposite spots; cilia at the rather truncate 
apex grey. (In the ? the anterior wings are darker, especially poste- 
riorly, and the fascia and spots are whiter and broader; ¢he costal spot 
is decidedly posterior to the dorsal spot.) Posterior wings grey, with 
paler cilia. : 
Common at the beginning of June and in August, on the old 
tram-road beyond Croydon. The larva feeds in April, May, and 
July, in the leaves of Bromus erectus, not descending the stems ; 
the mined places assume a purplish tinge; the pupa may fre- 
quently be found on the upper side of the leaf, close to where it 
quits the stem. 
17. occultella, Dougl. Ent. Trans. i. n. s. Proc. 7 (1850); Sta. 
Alis anticis griseo-fuscis, fascia angulata albida valde obsoleta ante me- 
