196 
GRAPTOLITHA. By Dr. M. Drattdt. 
itata. 
nigrescens. 
merceda. 
tepida. 
atincta. 
torrida. 
laceyi. 
pexata. 
washingto- 
nia. 
dilatoculn. 
nasar. 
atara. 
lepida. 
thaxteri. 
G. itata Sm. (28 g). Forewing quite light greyish-white with entirely extinct markings, a median 
shadow between the maculae, the ring-macula oblong-elliptical; the undulate line is only marked by short 
triangular shadows at the costal margin and anal angle. Hindwing brownish-grey with darker veins. Colorado. 
G. nigrescens Engel is one of the finest species, on the forewing light olive-grey, intensely marked 
deep black, particularly in the basal area, between the maculae, which are exactly shaped as in tepida (28 g), 
and in the whole area below the cell as far as the undulate line, only interrupted by a red-brown basal spot at 
the hind-margin, and the very narrow red-brown coniform macula. Pennsylvania. 
G. merceda Sm. (28 f). Forewing purple grey with brown irroration, in the costal area more whitish 
with a black basal ray and dentate transverse lines, the whitish ring-macula connected with a similar spot 
below it, the reniform macula proximally produced; before the whitish undulate line small black sagittae. 
Hindwing light brownish. Canada. 
G. tepida Grt. (28 g). Forewing on the greyish-white ground irrorated with brownish-grey, in the 
basal area of a purer whitish-grey, the basal ray above bordered with ferruginous brownish; anterior transverse 
line double, posterior line crenulate and single, and between them a faded median shadow; the maculae are 
whitish and surrounded with black, in the reniform macula below somewhat rusty-red; before the whitish- 
spotted undulate line there are small black sagittae. Hindwing greyish-brown. Northern and Eastern United 
States (Massachusetts, New York, Albany). — The form atincta Sm. (28 h), from Canada, is darker brownish-grey. 
G. torrida Sm. (28 i) is similar to the form atincta, darker violettish or bluish grey, very similarly 
marked, but below the ring-macula with a distinct second ring, more intensely mixed with dark ferruginous 
scales, the undulate line more coherently whitish-grey. Hindwing brown with white fringes. From Canada to 
Colorado and California. — The green, narrowly white-striped larva on the wild cherry. 
G. laceyi B. <b McD. (28 k) is so similar to puella Sm. that they may be the same species. Forewing 
grey with a lighter grey spot at the base of the costal margin, with a black basal ray and distinctly marked, 
crenulate, double transverse lines; the ring-macula with a ring below it 8-shaped, the reniform macula on the 
median proximally produced, before the grey undulate line with distinct small sagittae. Hindwing smoky-grey, 
towards the base somewhat lighter. Described from Texas. 
G. pexata Grt. (28 h). Forewing blackish-brown, strewn with grey, the basal ray above bordered 
with yellowish-white, purple reddish scales at the base of the hind-margin and in the lower end of the reniform 
macula; transverse lines double, submedianly connected by black; the light reddish undulate line is proximally 
bordered with brown, analwards with a whitish spot. Hindwing brown with reddish fringes. Canada, North- 
Eastern and Central States. —- The form washingtonia Grt., from Washington, is darker, more blackish. 
G. dilatocula Sm. (28 h) is much larger and of more contrasting colours, more blackish-brown, in the 
central, postmedian and marginal areas irrorated with purple grey, the maculae are very large, purple grey, 
the ring-macula is round, in a ferruginous ring, the reniform macula distally ferruginous; the grey undulate 
line is proximally bordered with brown. Hindwing of a reddish brown, with a dark central luna. a bent 
transverse line behind it, and a faded marginal band. Washington, California. 
G. nasar Sm. Allied to lepida (28 g) and thaxteri (28 h). Forewing of a bright pure bluish grey with 
distinct markings and red-brown irroration in the reniform macula; the black basal ray is above and below 
bordered with whitish, the black transverse lines are edged with grey, connected by 2 long teeth opposing each 
other on the submedian fold; the sharply dentate undulate line exhibits in the lower half a W almost as far 
as the distal margin, with black sagittary rays before it. Hindwing greyish-brown, with a coppery reflection. 
Expanse of wings: 36 to 38 mm. Arizona. 
G. atara Sm. is very similar to nasar, larger, without any brown or reddish tints, of more subdried 
colours and with a faded, not so distinct marking; before the W of the undulate line the black rays of nasar 
are absent. Hindwing more whitish, also with a slight coppery reflection. Expanse of wings: 38 to 40 mm. 
Arizona. 
G. lepida Lintn. (28 g) has violettish-grey forewings irrorated with brownish, the black transverse 
lines are on the averted sides bordered with grey, the reniform macula is strangulated, on the median proximally 
produced, the ring-macula is obliquely elliptical. The undulate line consists of small blackish lunae. Hindwing 
reddish-brown. Canada, Maine, New York. 
G. thaxteri Grt. (28 h) is the American representative of the palearctic lamda F. (cf. Vol. Ill, p. 125. 
pi. 30 i) and very much like it; forewing of a clear violettish grey, in some places shaded with a brownish grey, 
distinctly marked, with a thick black, upwards faded streak connecting the transverse lines, and reddish-brown 
irroration in the lower end of the reniform macula, which is open towards the median shadow obliquely entering 
it; undulate line with black teeth above the centre and subanally before it. Hindwing coppery brownish with 
white fringes. Canada, United States to New York. 
