Pull. 4. 111. 1925. 
AMASTUS. By Dr. A. Seitz. 
417 
H. ochracea Rothsch. (49 e) has likewise as te.stacea a dark ochreous tinge on the forewing exhibiting ochracea. 
dull light spots at the costal margin and in the disc. Mexico, Panama. 
H. mansueta Ediv. nec Drc. (49 g) has on the forewing distinct transverse bands formed of chains mansueta. 
of spots. Hindwing at the apex brown, a part of the proximal margin is tinted pink. Mexico and Costa Rica; 
the figured specimen is from the Volcano of Irazu. — ab. niger ah. nov. (49 f) is an entirely black form occurring nigcr. 
on the Volcano of Irazu beside genuine labecula and somewhat recalling melas, from which, however, it differs 
by the forewing being black in the and by the veins. 
H. battyi Rothsch. (49 g) is much larger than the preceding, the wings being but very slightly baltyi. 
transparent. Forewing red-brown with transverse chains of yellow spots and a broad ochreous-yellow antemedian 
band. From Colombia. —- In the form oligocycla form. nov. (49 g) from the Irazu in Costa Rica the antemedian oligocycla. 
band is absent, and the small spots of the other transverse bands of the forewing are so much reduced that they 
are no more contiguous. 
H. edwardsi Pack. (= translucida Wkr., cprercus Bsd.) (49 f) is the largest species. The wings are edioardsi. 
rather hyaline in the disc, but at the costal and proximal margins of the forewing we notice distinct spots of 
a yellowish-pink tint representing the beginnings and ends of transverse bands more or less distinctly running 
through the forewing. California and Oregon. 
H. labecula Grt. (49 f) is very similar to edwardsi, just a wee bit smaller, but the spots at the costal labecula. 
and proximal margins of the forewing are less distinct, the whole insect greyer, also the hindwing not of such a 
bright pink tinge as in edwardsi. Colorado and New Mexico. —- The form mansueta Drc. nec Edw. (49 f) is much mansueta. 
larger, as large as edwardsi, but almost without any trace of a pink tinge on the wings which are light whitish- 
yellow, intermixed with a greyish brown, with distinct dark spots at the costa and proximal margin. This 
form is known from Mexico. 
H. splendens Hmps. (49 g) was formerly regarded as a form of labecula which it resembles extra- splendens. 
ordinarily, in fact, except the thorax being more distinctly marked dark and the abdomen being posteriorly 
decorated with dark transverse bands. The spots on the forewing are also more distinct than in labecula, though 
not so distinct and dark as in mansueta Drc. — The 3 latter forms are probably not.in all cases distinctly separable, 
particularly not in the much flown specimens, just like rhoda, daraba, testacea, and annaria which are merging 
one into another. 
H. euornithia Dyar (49 h) from Guerrero in Mexico is much smaller, the forewing is dark brown, euomithia. 
intermixed with white bands and spots. 
H. nimbipicta Dyar (49 g), from the same district, has a much darker forewing through which but nimbipida. 
slightly lighter, not white transverse bands extend, with a faintly lighter basal part. The hindwing, however, 
is more intensely tinted pink, and the imago is larger, almost like splendens. 
H. xanthosticta Hmps. (49 h) is dark brown, thinly scaled though without any really hyaline places, xanthostic- 
Forewing with 2 transverse (antemedian and postmedian) chains of yellow spots, and a subterminal undulate 
shade; abdomen orange. Much smaller than nimbipicta. Ecuador and South Brazil. 
H. diminuta Wkr. (49 h) is quite similar, though of a lighter colour, the hindwing more diaphanous, diminuta. 
and the two chains of yellow spots on the forewing are more faded. South Brazil. 
H. utica Drc. (49 h) from Mexico, like the two preceding species, differs rather much from the total utica. 
character of the Hemihyalea, it is of a more slender structure, with narrower wings and an almost straight margin 
of the hindwing. Forewing densely striated and dotted black, traversed by dingy white, densely strewn bands, 
an angular one of which is situate near the base, a shortened one at the cell-end, and another one before the 
marginal third. 
H. melas Dgn. (49 h). Head, body, and forewing uni-coloured dark brown. Hindwing diaphanous, melas. 
in the white, in the $ brown. Colombia and Peru. — This species presumably hardly belongs to this genus, 
since it differs by its very clumsy structure and relatively shorter wings and antennae, as well as by the 
absence of a lower discocellular, provided the figure in Hampson’s Catalogue, which we copied, be correct. The 
species is not before me; the $ which Dognin described as Opharus melas, is in his collection, whilst the type 
of the d is in the National Museum at Washington. 
91. Genus: Amastus Wkr. 
This genus, exhibiting mostly large imagines of a clumsy body and with thinly scaled wings, numbers 
to-day about 70 forms all of which are confined to Tropical America, not a single-form reaching anymore to the 
United States. It approximates the Hemihyalea to such an extent that some species fluctuate between the 
two genera, and their difference of the upper median branch of the forewing rising in Amastus nearer at the 
lower cell-angle, in Hemihyalea more remote from it cannot be relied upon, since this distance varies a great 
deal in the single species of a genus and even in some species (ochraceator, aconia) individually. Like the 
VI 
53 
