200 HETEROCERA. 
head, thorax, and abdomen above the same colour as the primaries, on the underside very much paler in 
colour; antenne pale yellowish-brown ; legs pink. Female much greyer in colour than the male, and 
darker brown from the whitish central line to the outer margins of both wings; the underside is also 
much more shaded and mottled with brown. Expanse, ¢, 34 inches; 2, 43 inches. 
Hab. Guatemata (Boucard, in mus. D.). 
Apparently a rare species. 
3. Lonomia concordia, sp.n. (Tab. XXI. fig. 6, 3.) 
Male. Primaries and secondaries uniform dark yellow, shaded with reddish-brown ; primaries with a faint dark- 
coloured line crossing near the base, two white spots at.the end of the cell, and a narrow blackish line (placed 
nearest the anal angle) crossing from the apex to the inner margin, the blackish line is bordered on the 
inner edge with pale yellow and between it and the outer margin are several dusky markings ; secondaries 
crossed about the middle by a blackish line, between which and the outer margin is an irregular series of 
blackish markings; underside pale yellow, with a slightly pinkish shade near the apex of the primaries 
and about the middle of the secondaries, the outer margins of both wings irrorated with minute black 
scales, two reddish-brown spots at the end of the cells of both wings and a dark brown spot on the costal 
margin nearest the apex of the secondaries: head, thorax, and abdomen the same colour as the primaries, 
anus slightly paler ; antenne pale yellowish-brown ; legs reddish-brown. Expanse 33 inches. 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion; ibbe, in mus. 
Staudinger). 
This species is very closely allied to Z. electra, from which it differs chiefly in colour 
and in the rather different position of the dark line crossing the wings. I think it quite 
likely that this insect may be only a southern form of L. electra, though the differ- 
ences seem to be constant in the four male examples before me; but, without knowing 
the female, I could not include it with that species, and have therefore ventured to 
describe it. 
4. Lonomia cluacina, sp.n. (Tab. XXI. fig. 5, ¢.) 
Male. Primaries and secondaries dark yellow, thickly irrorated with black scales; primaries crossed by two 
black lines, the first close to the base, the second beyond the middle crossing from the apex to the middle 
of the inner margin, between the second line and the outer margin are a number of indistinct pale yellow 
markings with dusky scales on the inner side, two whitish spots (connected by an indistinct black line) 
at the end of the cell; secondaries crossed by two black lines, the first near the base, the second about 
the middle, from the second black line to the outer margin the surface is very thickly speckled with black 
dots and a number of indistinct pale yellow markings ; underside pale greyish-y ellow, shaded with greenish- 
brown, with an interrupted pale yellow submarginal band: head, thorax, and abdomen yellow; antenne 
pale brown. Expanse 23 inches. 
Hab. Panama, Bugaba 800 to 1500 feet (Champion). 
Only a single male specimen of this species was sent. L. cluacina is most nearly 
allied to an undescribed species from South-east Brazil contained in my own collection. 
METANASTRIA. 
Metanastria, Hiibner, Verz. bek. Schmett. p. 186. 
Hiibner placed three species in this genus; these are:—M. hyrtaca, Cram., from 
Surinam (placed doubtfully in Lasiocampa by Walker); J. aconyta, Cram., from 
