942 
ARHACIA. By Dr. M. Draudt. 
suavis. arches of the submarginal line are much flatter. — f. suavis Barnes is the western form from Colorado; the 
ground-colour below the costal stripe behind the cell is much darker here, the cell-end spot much thicker, shorter 
and deep black; the collar is dark greyish-black, the $ hindwing white, only at the base of the fringe somewhat 
smoky, but like the type in the §; on account of its antennae being somewhat longer pectinated, the author 
considers it to be a distinct species. — Moreover, 3 well differentiated insects are before me from Mexico, partly 
in numbers, but as only the $$ are known to me for the present, it cannot be decided whether they are distinct 
jalapae. species, for which reason we range them here as forms of albifrons : — jalapae f. nov. (147 c) is a large, very light 
and delicately lilac grey form, not strewn darker, without any transverse markings except the fine double 
antemedian line which extends sharply distally below the median vein, then on the submedian fold 
more than 1 (4 mm inwards on to the inner margin; the costal-marginal stripe is very purely white below 
and bordered below by a deep and broad blackish-brown colour with a chestnut-red reflection, the dent 
behind the discal spot is short and broad triangular; the pointed arches of the submarginal line are trans¬ 
formed below the centre into fine black oblique streaks turned inwards above. Head and collar light 
difficilis. reddish-yellow, abdomen and hindwings light brownish-grey. Jalapa. — difficilis /. nov. (44745) differs from 
jalapae in the forewing being coarsely strewn with olive grey especially before and behind the lighter median 
area, the basal area is purely white, it contains the subbasal line forming tw r o high pointed arches; the 
antemedian line forms quite equably rounded arches, its interior portion is olive grey, only the distal portion 
being thick and black, red-brown near the cell, the postmedian line is likewise distinct and forms distinct 
blackish lunulae interrupted on the veins; the area below the costal-marginal stripe is only slightly shaded with 
yellowish-grey, the submarginal line does not form any pointed arches, but only very flat uniform dull brown 
lunulae interrupted by the veins. Fringe more undulate and speckled light and dark, more uniformly rounded 
zacualpana. and unicoloured lilac grey in jalapae. Jalapa. The types of these two forms are in the Coll. Drattdt. — zacual- 
pana /. nov. (147 d) is the largest and darkest form, dark slaty grey, without any markings like jalapae, of the 
antemedian line only one double arch is visible below the cell, the posterior line is partly indicated by shadow¬ 
like black strewing, a black streak above it in the cell-end, which is strewn with red-brown, before the deep red- 
brown discal spot in a reddish-yellow ring; the yellowish ochreous costal-marginal stripe is somewhat more 
whitish below and only extends to the cell-end, in all the other forms it enters the cell, it forms strong triangular 
dents downwards, all of which are close together, and it is spotted cinnamon brown before the apex in the 
cellular spaces, crossed by the silvery white veins; towards the ground of the base it is feebly bordered with 
red-brown, towards the costal margin it is intensely dusted lilac grey. Hindwing less brown than in the other 
forms; the submarginal line forms flat arches, thickened between the veins. Zacualpan. Type in the Coll. 
Drattdt. — The adult larva is orange brown or red with greyish-white dorsal and lateral bands which are finely 
longitudinally striped black, and a red protuberance on the 11th segment. It lives on oak and is gregarious 
in its youth. 
odontomys. S. odojitoniys Dyar (147 d) is also extraordinarily similar to the preceding forms, but surely a distinct 
species on account of the C J antennae being at least thrice as broadly pectinated. Colour purple grey as in 
zacualpana, all the transverse markings distinct as in albifrons, the antemedian area lighter whitish-grey, the 
costal margin narrow and sharply darkened; the narrow and long yellowish-white costal-marginal stripe extends 
in its entire width to the uppermost round arches of the double antemedian line, the dent behind the small 
dark cell-end streak surrounded by reddish is very small and short, the next dent only follows shortly before 
the angular arches of the submarginal line. Head and collar dark brown, hindwing dark greyish-brown. Mexico 
(Zacualpan). 
tlotzin. S. tlotzin Schs. (147 d) lacks the characteristical whitish-yellow costal-marginal stripe of the preceding- 
species; forewing light grey with rather straight black transverse lines, two through the centre and one behind 
it, the sub marginal line extends similarly as in the preceding species; between them, the wing is traversed by several 
notched shadowy stripes. Hindwing white, shaded with brown at the costal and distal margins. Described 
from Mexico. 
sigea. S. sigea Schs. Body and forewing as in tlotzin. Hindwing white at the base and inner margin, suffused 
with light brownish, with brown veins, dark brown at the distal margin from the centre of the costal margin, 
narrower analwards, fringe white. Expanse of wings: 36 mm. Coary (Amazons). 
corcova. S. corcova Jones. Forewing reddish ochreous brown, dusted with lilac, with double red-brown transverse 
lines, the interior part of the anterior line being very dark, enclosing a white spot at the inner margin, shaded with 
violettish-brown on both sides, the distal shadow extending at the inner margin as far as the anal angle, the 
posterior line strongly dentate, filled with a lighter colour; a dark V-shaped spot is at the cell-end, and red-brown 
submarginal spots surrounded by a lighter colour, those above veins 3, 6 and 7 being the largest. Hindwing 
yellowish reddish brown, darker at the costal and distal margins. Expanse of wings: 35 mm. Brazil (Bio de 
Janeiro). 
51. Genus: Arhaeia Herr.-Schdff. 
This genus which used to comprise part of the genus Lirimiris is now confined to 4 large species with 
tuftedly ciliated $ antennae, feeble, rather short palpi with a somewhat longer second joint. Forewing long 
