28 
MEROLONCHE. By Dr. M. Dratjdt. 
lithospila. 
ctrioch. 
othello. 
edolata. 
perdita. 
barnesi. 
obi I n i ta. 
lanceolaria. 
insol ita. 
lupini. 
spinea. 
A. lithospila Grt. (4 b) lias grey fore wings dusted and strewn with brown, the veins marked with 
black, particularly in the marginal area; the maculae are only traceable as black dots, between both a whitish 
streak on the discal fold. Both transverse lines are almost entirely absent except traces; the anal sagitta is 
distinct; between the veins in the marginal area also black streaks. Hind wing semi-diaphanous white with 
brownish veins and margin. From Canada to Florida and to the Pacific Coast. — The larva is green with a 
red-brown, yellow-edged dorsal band which is expanded on the rings 6 to 10, and with scanty fine, thin hairs. 
It lives on chestnut, oak, and other foliage-trees. 
A. arioch Streck. Forewing yellowish-white, strewn with brown, with 4 black dots in the cell and 
a row of sagittae instead of the posterior transverse line, besides with faint subterminal patches and a marginal 
row of round, black, small spots. Hindwing purely white. From oblinita (4 f) and lanceolaria (4f) easily discer¬ 
nible by the yellowish colour and much less prominent markings. From New Orleans. 
A. othello Sm. (4 e) looks like longa from which it chiefly differs by the discal area being blackened 
below and behind the cell; the basal area is more bluish-grey, the marginal area grey with black-striped veins; 
both transverse lines distinct, as well as the sagitta. Hindwing white, in the $ greyish-brown. Only from Cali¬ 
fornia. 
A. edolata Grt. (4 c) is a much larger and blacker species with long, narrow wings, and in contrast 
with the preceding, light marked veins; of the anterior transverse line there are only traces, the reniform macula 
is entirely absent, the posterior transverse line is very deeply dentate, proximally bordered with grey. Hindwing 
purely white, the veins and the apical marginal area faintly brownish. From Arizona, and in a very large dark 
form which was figured from Mexico (Zacualpan). 
A. perdita Grt. (4 c). The bluish-grey ground-colour appears very dark owing to the intense black 
strewing, especially in the inner-marginal part as far as the discal line; both transverse lines are distinct, behind 
the posterior one black dusted spots analwards and behind the cell. Hindwing like in edolata. From Canada 
and the United States. — The black larva with black hair-tufts lives on Alnus. 
A. barnesi Sm. (4 c) is similar, with broader wings, somewhat lighter, more greyish-white, thickly 
strewn with blackish-brown, recognizable by the black stripe in the proximal part from the base to the discal 
line, being continued behind the postmedian in the anal fold to the margin, both maculae entirely absent. Hind¬ 
wing somewhat more yellowish than in the preceding. Hitherto only known from Colorado; taken in June 
and July. 
A. oblinita Abb. <b Sm. ( = salicis Harr.) (4 f) for which Grote established the genus Eulonche, is 
a very common, greyish-white species very much strewn with black, easily recognizable by the long, pointed 
forewings with longitudinally striped markings, and purely white liindwings. All the transverse markings 
are more or less indistinct or extinct. From Canada to Florida. — Larva black with broad yellow lateral stripes 
and spotted subdorsal lines and red transverse bands, on red tubercles with short reddish-hair. On Alnus and 
low plants. 
A. lanceolaria Grt. (4 f) has comparatively still longer, narrower wings with almost entirely extinct 
transverse markings, only the posterior one being visible. The marginal dots which are very distinct in oblinita, 
are here absent altogether. Canada and Massachusetts. — Larva green, dusted blackish in the shape of dorsal 
and lateral bands, with black hair-tufts on large light tubercles; it lives on low plants. 
A. insolita Grt. (4 f) differs from the preceding by muchdarker, blackish-brown forewings hardly 
dusted with whitish, with rather indistinct transverse lines. Hindwing white, at the costal and distal margins 
dusted with brownish. Pennsylvania *). 
2. Genus: Merolonche Grt. 
Very similar to the preceding genus, distinguished by the stunted proboscis, porrect palpi, smaller eyes, 
in the bi-combed antennae with a serrate end, and on the hindwing the uppermost radial not being forked 
with the subcostal vein. But few species are known, which easily become greasy in the collection. 
M. lupini Grt. (4 f) has bluish-grey forewings strewn with black, and dusted with brown except the 
basal area, thereby becoming slightly yellowish in contrast with the other species. All the usual markings are 
rather distinctly present. The whitish liindwings are dusted with darker veins, traces of a discal spot, and a 
transverse line behind it. Only from California. 
M. spinea Grt. (4 g) has more violettish-grey wings being but little dusted with brown, with very 
indistinct maculae, a very prominent brown discal shade which is on the submedian fold accompanied by a 
*) A. gasta Streck. is probably to be considered as a dark specimen of the European megacephala F. which, somehow 
or other, was presumably imported and taken in New Orleans, but does not occur elsewhere in America. 
