LITHOMOEA; FOTA; FOTOPSLS. By Dr. M. Draudt. 
249 
line is only occasionally indicated by brown internerval streaks in the marginal area. Hindwing yellowish 
grey. Washington, a very rare species. 
A. lichena B. <£■ McD. (36 e) of a not quite certain generic position rather resembles one of the pale- lichena. 
arctic species of Antitype, or a Scotogramma. The dark grey forewing is coarsely strewn with black, ochre- 
yellow, and white, thus creating the impression of an olive-greenish colour; transverse lines indistinct, faded and 
bordered with whitish, the posterior line particularly towards the hind-margin being the most distinct and 
composed of white dots bordered with black; maculae filled up with olive, above and below open; in the darkened 
marginal area is the rather indistinct lighter undulate line. Hindwing dark smoky-grey. California. 
49. Genus: Lithomo^a Him. 
Structure almost the same as in the preceding genus, but the thorax of a somewhat quadrangular shape, 
covered with hair and hair-like scales, likewise with loose tufts on the pro- and metathorax. The abdomen 
shows a distinct row of tufts, those on the 3rd and 4th rings being very large. The genus contains in America 
3 very closely allied species exhibiting great resemblance also to the palearctic rectilinea (cf. Vol. Ill, p. 203, 
pi. 42 cl). 
L. xylinoides Gn. ( = contraria Wkr., ancocisconensis Morr.) (36 f) is a well-known species of the same xytinoides. 
scheme of markings as in the palearctic rectilinea, but of a much darker brown colour, whereas the median 
area remains bluish-whitish at the costal margin and hind-margin; the hindmarginal part of the postmedian 
line is remarkable by being bordered with a purer white. From Canada to New York. -— The yellowish-brown, 
laterally darker brown larva with a broad light lateral stripe lives on various low plants. 
L. brunneicrista Sm. (36 f) is the darkest species, very similar to xylinoides , but with somewhat brunnei- 
longer teeth on the male antennae, and with a distinctly red-brown dorsal tuft. On the forewing the post median crista. 
line is very near to the distal margin, very indistinct and particularly in the upper part not double, filled up 
with whitish, but single grey. Hindwing on an average somewhat darker. Only from Alberta (Canada), a rare 
species. 
L. indistincta Sm. is at once separable from the very closely allied two preceding species by the indistincta. 
almost absent anterior transverse line of which only a long tooth is left in the submedian region, its point 
extending to the postmedian line. Canada and Oregon. 
50. Genus: Fota Grt. 
Smaller species with narrow wings, a developed proboscis, short porrect palpi, and a large conical frontal 
projection with sharp upturned edges, in the centre of which there is a long central point which, however, is 
covered by long hairs; below it there is a horny plate. The thorax is only covered with scales and exhibits in 
front and behind loose tufts. The abdomen is tuftless. Anterior tibiae with a short bent spine on the inside. 
Only 2 species 
F. minorata Grt. (= aperta Drc. part.) (36 e). Forewdng purple grey, particularly at the costal margin minorata. 
somewhat irrorated with brown, with quite indistinct transverse lines, the anterior line being double, filled 
up with a somewhat lighter colour, and with lighter grey, somewhat brown-centred maculae finely surrounded 
with black, the reniform macula with a darker median streak; in the marginal area there are fine darker inter- 
nerval streaks. Hindwing of a pure white. Arizona to Mexico. Much less variable than the similar following 
species. 
F. arniata Grt. (36 e) is somewhat larger, the transverse lines are more distinct, the posterior line armata. 
dentate, both connected by a black submedian streak; there is also a light undulate line, subapically traversed 
by fine black rays; before and between the whitish maculae darkened by deep black. Hindwing white, on the 
veins and margin hued with yellowish. Arizona. — The form medioalba B. cb Benj. (36 f) has the basal area medioalba. 
and median area below the cell whitish. — brunneogrisea B. <b Benj. (36 f) has the basal area brown as well brunneo- 
as a stripe from the reniform macula to the margin towards the apex; below the cell there is a long black streak. grisea. 
51. Genus: Fotopsls Dyar. 
Y r ery closely allied to the preceding genus from which it chiefly differs in the absence of the accessory 
cell; on the forewing the four lowest subcostal branches are united on a common fork. The frons exhibits a 
rounded conical projection; the abdomen is tuftless as in the preceding genus, the palpi are obliquely turned 
up; the apex of the forewing is more pointed than in Fota. But one species. 
