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Genus Dyschorista, Led . 
synonyms of 0. cynica ) of which they are in fact slight 
varieties ; 0. infirma , however, is a Brazilian species, and 
must be expunged from the North-American fauna, the form 
described by M. Guende as var. A being, as he supposed, a 
distinct species. 
In typical 0 . infirma the secondaries of the male are creamy 
white — “Ailes infer, d’un blanc-jaunatre ” — whereas in the 
northern form they are of the same glossy brownish grey as 
in the female. In the Brazilian insect the inner line of the 
central area of primaries is more oblique and much more 
irregular and the outer line more distinctly sinuated between 
the nervures ; both of these lines and the edges of the dis- 
coidal spots which they enclose are much less prominent than 
in the northern form ; but, as M. Guenee says, the subter- 
minal line is clearer, at any rate it is so in the female ; the 
marginal spots are very indistinct, and are thus overlooked in 
the original description of the Brazilian form ; but in that of 
var. A the pale zigzag line which shows them up in the 
northern form is noted : — u Un feston terminal clair tres- 
marque.” I propose to give the North-American species the 
new designation of Dyschorista crenulata. 
Four closely allied Brazilian species are in the collection, 
all differing more or less in the clothing of the under surface 
of the primaries, the tufting of the anal extremity in the 
males, or the palpi ; one of these is typical 0 . infirma , a 
second may be 0 . rubor , but the discoidal spots are bor- 
dered by a pale line, whereas in Guenee’s type (a female) 
they were not ; a third I am unable to recognize from any of 
the descriptions ; it is a male with closed anal claspers, 
giving it the aspect of a female ; the costa of the primaries is 
distinctly arched towards the base ; the under surface of these 
wings almost wholly covered with dense rough hair, which 
extends also to the basicostal area of secondaries ; the colora- 
tion and general pattern is that of Dyschorista crenulata , but 
the u orbicular” spot is rhomboidal, the two outlines of the 
central area are indistinct and much more parallel, and the 
pale crenulated submarginal line is wanting ; the pectus and 
femora are also much more hairy. I propose to call this 
Dyschorista lanaris. The fourth species of the same group is 
O . curvirena — a most remarkable insect, in which the palpi 
are curved upwards like those of a Deltoid and the anal tufts, 
when fully expanded, are seen to be enormously developed. 
The genus seems to abound in extraordinary ornamentation ; 
in D . melanogaster M. Guenee says, u Abdomen noiratre en 
dessus, garni lateralement de poils carnes, a Textremite d’une 
brosse jaunatre,” which calm description hardly prepares one 
for the large expanded rose-coloured brushes of the moth. 
Ann. & Mag . N. Hist. Ser. 6. Vol. vi. 7 
