TRACHEA. By Dr. M. Draudt. 
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be denominated: alberta Sm. (31 g). •— illustra Sm. is another form or perhaps also a species from Alberta, alberta. 
extremely similar to alberta, but much darker, almost black, the transverse markings more or less extinct. — iiinsfra. 
enigra Sm. (31 h) is another closely allied form or species, coloured like typical alberta, but somewhat smaller, enigra. 
with mostly somewhat more distinct markings; it is probably a synonym of alberta. 
T. geminimacula Dyar (31 h) is a large brownish-grey species strewn with black, with rather geminima- 
indistinct transverse lines being on the averted sides bordered with grey, behind the distal line with a double 
row of black and white vein-dots, the maculae surrounded with blackish, the reniform macula below outside 
with 2 white dots; instead of the undulate line there are small white sagittae proximally bordered with blackish. 
Hindwing light brownish, veins and margin darker. Colorado, New Mexico. 
T. impulsa Gn. (31 h) is similar, but deeper purple blackish, with a black basal ray and black transverse impulsa. 
lines without grey scales; the reniform macula shows outside a small white lunar streak with white dots above 
and below it. Hinclwing light brown. Canada to Texas. 
T. mixta Grt. differs from impulsa in its more brownish ground-colour with a purple tint, more mixta. 
w r hite at the reniform macula, the small sagittae before the undulate line forming more a coherent proximal 
border. From California. 
T. nigrescens Schs. (31 h) is closely allied to impulsa ; forewing dark brownish-grey, postmedianly nigrcsccns. 
tinted brownish, with rather indistinct double black transverse lines, the anterior line below the cell being 
threefold; the large maculae are surrounded by black, the reniform macula is whitish, strewn with yellow, 
before it a grey and a dark line; behind the somewhat lighter undulate line dark internerval streaks extend 
to the margin. Hindwing in the basal half opalescent white, thinly scaled, at the margin broadly darkened 
with greyish-brown. Mexico, Costa Rica. 
T. altivolans Schs. Forewing light brown, in the basal half irrorated with lilac-grey; ring-macula aliivolans . 
with a long tooth towards the base, the reniform macula in a light reddish-brown ring with a bent dark median 
streak; a fine black basal ray bends round in the centre of the wing, is angular on the submedian and then turns 
again distally towards the hindmargin; the posterior transverse line is dentate, with dark vein-streaks behind 
it. Hindwing light reddish-brown. Costa Rica. 
T. espumosa Dogn. (31 h) is a large red-brown species being more grey in the marginal area, with espumosa. 
double interruptedly dentate transverse lines which are submedianly connected by black; the ring-macula is 
a small yellowish spot, the indistinct reniform macula outside shows a small yellowish luna with dots below 
and above it; instead of the undulate line there are small blackish sagittae. Hindwing reddish-brown. Described 
from Ecuador. 
T. polychroa Hmps. (31 i) is much smaller, but otherwise in the marking not dissimilar, the red- polychroa. 
brown colour mixed with sap-coloured green, the coniform macula is a green spot with another spot behind 
it; both the oblong maculae are light, surrounded by blackish; behind the undulate line the marginal area is 
darkened. Hindwing brown with green fringes. Chile. 
T. xylophila Wkr. (= infelix Drc .) (31 i) is very wide-spread and common in the tropics, recognisable xylophila. 
by the blackish-brown basal half against the light reddish-brown or whitish-brown distal half with a subapical 
dark costal-marginal spot; transverse lines double, dentate, behind the distal line with vein-streaks, behind 
the undulate line with dark vein-streaks joined in the direction from the margin by small internerval streaks. 
Hindwing in the light, in the $ dark brown. Mexico to Venezuela. 
T. lacruma Schs. (31 i) is allied to xylophila and at once discernible by a large dark central luna lacruma. 
of the hindwing; ground-colour somewhat greyer, the distal border of the dark basal part runs less oblicprely 
by extending at the hindmargin farther towards the distal margin. Brazil. Argentina. 
T. roseae Schs. Forewing light reddish-brown, strewn with black, with slate-coloured veins, in the roseac. 
basal area with 2 oval dark brown spots bordered with black, the anterior half of the central area is slate-coloured, 
edged by black undulate transverse lines; ring-macula horseshoe-shaped, reniform macula narrow, below behind 
it small heaps of white scales; the posterior transverse line is double; before the white undulate line in the 
centre darkened black in the shape of a band. Hindwing light brownish. Galapagos Islands. 
T. mancilia Schs. which is doubtfully listed in this genus, has the blackish-brown ground-colour mantilla. 
divided into large spots finely bordered with white; basal area narrowly white, parted by black; behind it 
follows a greenish-white band parted above and below and faded below the cell; the ring-macula is a black 
dot, the large reniform macula is blackish-brown; behind the vertical postmedian line which expands behind 
the cell and contains a triangular spot, there are two large spots. Hindwing dark brown. Guatemala (City). 
