PSYCHOPHASMA; EXEMASIA; HEMIHYALEA. By Dr. A. Seitz. 
415 
H. maasseni Rothsch. (49 a) greatly resembles the preceding, with narrower wings, of a duller tinge, 
the thorax and abdomen ochreous. Forewing with a nebulous undulate stripe before the lighter border, which 
exhibits a dull brownish not light yellow layer, and with a dark cell-end. Peru. 
H. tolimensis Rothsch. (49 b) already looks entirely like a Hemihyalea. It has diaphanous forewings 
very scantily scaled brown, the only marking on them consisting of a hyaline white, scarcely prominent, sub- 
marginal undulate line and of a feebly dark cell-end mark. The species is easily recognizable by the entirely 
white head contrasting brightly with the brown thoracic dorsum. Abdomen again covered with lighter hair. 
Colombia; the figured specimen taken by A. H. Fassl on Mt. Tolima at an altitute of 3200 m. 
H. conspicua Maass. (47 f). Body dirty brown, wings dull hyaline, in the disc diaphanous, the margins 
smoky dark and ochreous. Entirely like a Hemihyalea. Peru. 
H. vitreata Hmps. (49 b). Body dark brown, shoulders marked black, abdominal dorsum tinged 
yellowish-red except the black apex. $ wings quite hyaline, only the costal margin of the forewing faintly 
yellowish. The $ has the margins of the forewing tinged yellowish-red, the distal part being faintly strewn 
dark, the hindwings pale reddish ochreous. Peru. 
H. leda Drc. (49 b). One of the largest species. Body and wings brownish ochreous, in the disc the 
wings are diaphanous. Through the distal part of the forewing extend 2 transverse rows of small, indistinct, 
dark dots. Blackish dots are also on the patagia, one at the shoulder, one at the apex. From Dominica. 
88. Genus: Psycliophasma Btlr. 
One medium-sized species with hyaline wings, described as Halisidota, was placed into this genus and 
is at once discernible by the different contours of the apical part of the forewing, where the border is gnawed 
out below the apex, which process is repeated, though in a less degree, above the middle of the border. This 
is the case in both sexes and is accompanied by a somewhat deviating course of the subcostal veins. The species 
is widely distributed and nearly everywhere common. 
Ps. erosa H.-Schdff. (= albidator Wlcr., vitripennis Wlcr.) (49 b). Wings hyaline, only the margins 
and veins in the forewing ochreous-yellow, marked blackish-brown; particularly conspicuous is a blackish- 
brown costal spot above the middle of the cell. Numerous small dots between it and the base of the wing, 2 black 
parallel streaks above the distal half of the proximal margin and brown bordering of the distal-marginal part 
below the apex, particularly at the excised place. From Mexico through Central America and Brazil to Peru, 
nearly everywhere common. 
89. Genus: Exemasia Dyar. 
This genus was established for one quite unicolorously pale yellow butterfly from Mexico, exhibiting 
the size and habitus of a Halisidota, but with very densely and long-pinnated antennae reminding us of an 
Antarctia or Palustra. It seems to be allied to those (resp. the Euchaetias) and Apantesis by the tufted head 
and the fleece-like hairing of the thorax. 
E. ochropasa Dyar (48 c). Quite pale yellowish-white. Body, wings, antennae and legs quite uni- 
colorous. Recognizable by very long hairy fringes on the femora and tibiae of the <$. I do not know the $; 
the figured specimen from Mexico. 
I 
90. Genus: Hemihyalea Hmps. 
This genus contains 36 forms and is allied both to the Halisidota and the Amastus. The wings show 
throughout a very scanty scaling, sometimes even none whatever, and the species are therefore very difficult 
to discern; nothing is known of their habits; nearly all the specimens known are presumably taken at the lantern 
to which the insects come flying rather clumsily and on which they run about awkwardly with their long legs 
and heavy posterior body. Proboscis strong, palpi below haired like a brush, the third joint not stunted. Antennae 
long like those of nearly all the Phegopterini , in the J also with rather long double pinnae. Abdominal dorsum 
almost invariably glaring red or orange, in the £ often with distinctly projecting clenched appendages. In the 
forewing the two first subcostal veins rise before the cell-end, the footstalk of the 3rd to 5th is long; the two 
lower radials come from one dot of the lower cell-angle; in the hindwing they have a short footstalk. Only 
3 species reach the southern part of the United States, the others inhabit Tropical America to the south of 
Mexico. 
maassen i. 
tolhnensis. 
conspicua. 
vitreata. 
leda. 
erosa. 
ochropasa. 
