DICENTRIA. By Dr. M. Draudt. 
957 
D. hidalgonis Schs. is likewise very closely allied to drucei, but with broader wings and darker at the hidalgonis. 
costal margin, the basal half of the forewing dusted with light brown, the subcostal area shaded with lilac grey, 
the two lower radial branches striped brown. Expanse of wings: 44 mm. Mexico (Hidalgo). 
D. fera Dogn. is also very similar to drucei, the wings are somewhat less long, the abdomen shorter, the /era. 
uppermost radial branch of the hindwing on a much longer stalk with the subcostal branch. The forewing is 
coloured as in drucei, the basal part of the costal margin, the cell and below it the area at the base of its lower 
branches dusted with lilac, the space between the median vein, the lower median branch and the inner margin 
shaded with olive, the inner-marginal vein lilac; two white small spots above each other at the anal angle, and 
two more in the upper half of the wing above a long brown stripe along vein 5; subapical white dusting, an 
olive grey spot behind the black cross-vein streak. Hindwing as in drucei. Expanse of wings: 43 mm. South 
Eastern Peru. 
D. violascens Herr.-S chaff. (= laciniosa Edw., brunnipennis Raye, phraortes Drc.) (149 c) is a smaller violascens. 
light edition of drucei, still smaller and with narrower wings than the likewise very similar minotelis ; the costal 
margin of the light yellowish-brown forewing is darker red-brown than in drucei, the inner-marginal part not 
darkened, all the transverse markings lighter and finer, the area between the basal ray and the median vein 
darkened olive grey, the stripe behind the cross-vein below vein 5 more distinct, olive grey, narrower towards 
the margin. The $ is also somewhat like that of drucei, it is more unicoloured red-brown, not lighter yellowish- 
brown at the inner margin and subterminally, hindwing somewhat lighter. Mexico. 
D. simplex Dogn. is allied to violascens, but the shape of the wings is somewhat broader, the inner angle simplex. 
less obtuse, the distal margin scarcely dentate, the short abdomen hardly projects beyond the hindwing. The 
costal margin is blackish, not red-brown, a blackish shading is below and behind the cell, a light longitudinal 
stripe is between the veins 5 and 6, 2 small black spots at the anal angle. Hindwing as in the preceding species. 
Expanse of wings: 29 mm. Paraguay. 
D. rustica Schs. (149 c) is considerably darker than the preceding species, the forewing is brown, strewn rustica. 
with blackish at the base, at the inner margin and a part above the anal angle and at the cell-end, with dark 
post-median internerval streaks and black vein-dots; the anterior transverse line is very indistinct; dark sub¬ 
terminal internerval spots, the spot above the anal angle being bordered with reddish-yellow. Hindwing white, 
strewn with blackish-brown at the margin, with a dark inner-marginal streak and anal-angular spot. The $ 
is much darker with quite obsolete markings and dark hindwings. Costa Rica. 
D. tacita Schs. is much smaller, the brown forewing is strewm with brownish-black at the base, below tacita. 
the cell and vein 2, and at the margin between veins 2 and 4, without any other marking but some subapical 
black marginal spots. Hindwing white with dark inner-marginal shading. Expanse of wings: 34 mm. Costa Rica. 
D. lignicolor Wkr. (= virgata Pack., lignigera Wkr.) (149 c) has light ash-grey forewings longitudinally lignicolor. 
striped brownish between the veins, with 2 more distinct subapical strigiform spots between which whitish 
stripes extend, tinted ochreous below the median vein; a browm discal dot in the lower cell-end, a brown longi¬ 
tudinal streak behind it extends to the margin; a dark basal ray is submedian, the inner margin is strewn with 
darker grey, the transverse lines are absent. Hindwing white. — Thq, larva is green with single small brown 
dorsal spots and a large brown saddle-spot on the middle segments, obliquely continued downwards as far as the 
claspers; a twopointed cone bent forward is on the 4th segment, and a pointed elevation on the last segment. 
It lives on oaks, beeches and birches. The range extends over the whole Atlantic States. — f. delicta Dyar delicta. 
is a somewhat smaller form, of a more delicate ash-grey colour, not striped brownish between the veins, but 
the yellow tinge below the median vein more distinct. Florida. 
D. coloradensis Edw. (149 d) is smaller and much lighter than lignicolor: greyish-white, silvery white colora¬ 
nt the costal margin, with a slight brownish tinge along the inner margin, and the same markings as lignicolor, densis. 
dusted darker behind the cross-vein; hindwing white, a dark spot at the anal angle. Larva unknown. From 
Colorado and New Mexico. 
D. pallida Stkr. is a still lighter species, but larger and with broader wings than coloradensis, monotonously pallida. 
yellowish-white, not lighter at the costal margin, but brownish at the inner margin; the brown discal dot in the 
lower cell-end is thicker and above it in the upper angle there is another one; the dark longitudinal streak to 
the margin is absent, a black basal ray is very conspicuous; anterior transverse line absent, instead of the 
posterior line there are traces of dark vein-dots; instead of the undulate line there is darker shading. Hindwing 
brownish-grey. Texas. 
D. semirufescens Wkr. (= eximia Grt.) (149 d) is externally very similar to Schizura concinna but much semi- 
larger; forewing brownish ash-grey, browner at the inner margin, with a long basal ray and discal dot in the rufesccns. 
lower cell-angle, behind which a dark longitudinal stripe extends to the margin; at the costal margin, especially 
in the apical half, very oblique double streaks, transverse lines absent altogether. Hindwing white with a large 
