270 
B. Front on the 
for tliose of that species. I forbear to name the form at 
present. Its captor, Mr. W. ]\I. Bayne, obtained eggs 
from it, but the larvae died before a food-plant could be 
discovered. 
From Maassen’s description and figure (Stiibel’s Reisen, 
Lep., 1G8, tab. ix, 15) I should not be at all surprised if 
Cidaria aneiuliferata, Maassen, from Bolivia, were another 
form of this species, in which case his name would have 
priority. 
The build of the abdomen, which in the San Rafael $ 
is, in death, somewhat upcurved anally, and the presence 
of an oblique apical dash on forewing, suggest that this 
species may have some affinity with the genera Di/sstroma, 
Eustroma, Lygris, etc., of the Palaearctic Region—the 
genus Cidaria (pro parte) of Guenee’s .system. It is 
hardly likely it will prove to bear any close larval re¬ 
lationship to the seed-feeding Perizoma (= Emmelesia) of 
Europe. 
110. Perizoma (?) iduna (Prout), nov. sp. 
$. 25 mm. Face slii'htly tufted, palpus rather long, antenna 
almost simple, pultescent ; frenulum apparently wanting or very 
weak ; discocellulars of hindwing rather weakly biangulate. Fore- 
wing with basal and median areas brown, strongly tinged with pink, 
traversed by very ill-defined, more fuscous brown waved lines; 
proximal edge of median band ill-defined, its limiting line can just 
be made out to be strongly curved ; postmedian line (distal margin 
of median band) from about two-thirds costa, dentate and slightly 
oblique outwards to below then inbent to Mq where it projects a 
sharp angle into median band, then dentate and nearly perpendicular 
to inner margin ; distal area pale violet grey, almost whitish, but with 
a large apical blotch (to below R") of varied pink, ferruginous and 
fuscous, and a small, ill-defined tornal mark. Hindwing uniform 
ferruginous brownish. Underside of forewing olivaceous-grey in cell 
and submedian area, delicate pink in apical portion and at extreme 
margins, the colours not shar])ly defined ; discal spot and postmedian 
line well marked in dark olivaceous brown. Underside of hindwing 
delicate pink, slightly shaded with olive-grey basally, a large dark 
discal dot, and distinct, curved, somewhat diffuse and wavy post¬ 
median line. 
S. Pablo, 1200 in., Villa Novoes (?), Tucuman, September 
3, 1901, type in coll. Br. Mus. 
