962 
PSILACRON. By Dr. M. Draudt. 
roberti. 
eugraphica. 
aphretesa. 
plagimargo. 
macarisma. 
maculosa. 
mono- 
stigma. 
hidalgoa. 
cincia. 
mechanica. 
postmedian line is only visible in the upper two thirds. Hindwing brownish. Pore wing of $ spotted white 
analwards. Expanse of wings: 41, $ 47 mm. Costa Rica. This may be only a form of the following roberti. 
P. roberti Schs. (149 f) has reddish olive green forewings, mixed with grey in the basal area and under 
the lower median branch, with a large blackish-brown subapical spot, red-brown shading at the cell-end; 
rather indistinct dentate double transverse lines. Hindwing brownish-grey with a lighter postmedian shadowy 
line. Colombia. 
P. eugraphica Dyar (149 g) is violettish-grey on the forewing, mixed with yellowish-green, the most 
distinctly so under the lower cell-end, and with darker shading in the cell; a round black spot in the basal area; 
transverse lines brown, the interior double one only distinct in the inner-marginal half, the distal one single; 
instead of the undulate line there is a dark brown dentate band in the costal-marginal third and a smaller spot 
above the anal angle; the margin before the speckled fringe is dusted with violet. Hindwing light grey, dark 
brown at the anal angle, the beginning of a dark postmedian line begins at the costal margin and is bordered 
with light on both sides. Mexico. 
P. aphietesa Dyar reminds us of a Disphr. atrax or dolorosa : fore wing light grey, whitish at the base 
and in the basal half of the costal margin, dusted with olive green apically, with double olive grey transverse 
lines, the interior one obsolete in the cell; one small olive lunulate spot each in the cell and at the cell-end; a 
series of olive grey spots behind the postmedian line; undulate line whitish. Hindwing grey, slightly scaled in 
the disc, whitish at the costal margin with grey double streaks. Expanse of wings: 50 mm. Mexico. 
P. plagimargo Dyar. Forewing brownish olive, shaded with purple brown at the inner margin and 
subterminally, the inner margin defined on the submedian fold upwards by a jet-black streak; of the transverse 
lines only the rectangularly curved median line is distinct, black, a black spot is above the anal angle, two white 
spots behind it and above it; fringe speckled black. Hindwing light purple brownish with a feeble whitish median 
shadow. Expanse of wings: 48 mm. Mexico. 
P. macarisma Dyar (149 g) is very similar, dark greenish-grey with a large white spot in the anal half 
of the margin, with rusty yellow spots subterminally and at the margin, black veins and a thick black basal 
submedian streak; of the transverse lines only the black dentate undulate line is somewhat more distinct, 
white vein-dots are behind it. Hindwing as in 'plagimargo. Mexico (Zacualpan). 
P. maculosa Dogn. Forewing greenish greyish-brown, with rusty yellow spots, instead of the transverse 
lines with lighter bands the posterior one of which is spot-like, a black streak in a light spot is at the cell-end; 
a dentate brown line is in the yellowish-white marginal area. Hindwing dirty white, grey at the margin. 
Expanse of wings: 46 mm. French Guiana. 
P. monostigma Dyar has the antennae pectinated almost to the tips. Forewing light greyish-green 
with small white spots at the base of the costal margin and on the submedian fold, parts of the inner margin 
are strewn with black; a darker shadowy spot is behind the black and brown cross-vein streak; the exterior 
dentate brown transverse line is irregularly marked; fringe speckled black. Hindwing dark greyish-brown. 
Expanse of wings: 40 mm. Mexico (Hidalgo). 
P. hidalgoa Dyar (149 g). Forewing grey, feebly dusted green and strewn black with a black cross-vein 
luna surrounded with brown, and a small white costal-marginal spot above it; the dark double dentate transverse 
lines are rather indistinct, a series of small subterminal dark internerval spots is more distinct. Hindwing 
whitish, grey at the costal and inner margins with the beginnings of a light postmedian band. Mexico (Hidalgo). 
P. cincia Drc. (149 h) has a scheme of markings similar to that of the following mechanica, but the 
colours of D. manethusa. Forewing whitish, scantily strewn with rusty yellowish olive — probably green in the 
fresh specimen —, strewn with blackish grey in the distal third of the cell and between the submedian fold and 
vein 4, olive green in the basal area from the base of the costal margin to the centre of the inner margin, 
distally defined by a very oblicpie darker olive line of a slightly undulate course, a parallel double antemedian 
line behind it, the interior portion olive, the exterior one blackish; a darker lunule at the cell-end, 3 undulate 
lines behind it are indistinctly marked by accumulated darker atoms; apex more densely dusted with rusty 
yellowish olive; the veins in the marginal area interrupted by blackish. Hindwing thinly scaled white, inner 
margin and apex smoky, 2 short olive lines before the apex. Colombia (Rio Negro), Bolivia; South-Eastern Peru. 
P. mechanica Dogn. (= ockendeni Drc.) (149 h). The whitish ground of the forewing is strewn with 
grey, darker and more or less dusted with rusty brown at the base and postmedianlv, with double dentate 
transverse lines and a black discal crescent above which there is a small white spot in black costal-marginal 
streaks; fringe speckled. Hindwing white. Ecuador and Colombia. 
