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IV. Descriptions of South American Micro-Lepidoptera 
By HE. Meyrick, B.A., F.R.S. 
[Read December 4th, 1912.] 
Tue following genera and species are described from 
examples in my own collection. Five genera and sixty- 
one species are described as new. 
PTEROPHORIDAE. 
Pterophorus salticola, n. sp. 
¢. 22-23mm. Head brown, with a white fillet between antennae. 
Palpi 14, slender, white. Thorax brown, anterior half white. 
Abdomen whitish, infuscated towards base and in middle, sides 
with a brownish line towards base and tinged with pale yellow 
posteriorly. Forewings cleft to %, segments rather narrow, sub- 
equal, apex acutely pointed, termen of second segment very oblique ; 
rather dark brown; a shining white streak along costa from its 
base to middle of first segment, interrupted by a dark brown bar 
opposite base of cleft; a short indistinct longitudinal streak of 
whitish suffusion in middle of disc; a shining white spot on base of 
cleft, extended into upper part of basal third of second segment : 
cilia whitish-ochreous, with brownish patches at apex and tornus, 
and on base of cleft. Hindwings grey; cilia ochreous-grey-whitish. 
Prru, Chanchamayo; two specimens. 
TORTRICIDAE. 
MNESIPYRGA, N. g. 
Head with tolerably appressed scales. Palpi moderate, curved, 
ascending, with appressed scales, terminal joint rather short. 
Thorax with large double posterior crest. Forewings with 3 from 
angle, 7 and 8 out of 9, 7 to termen. Hindwings without basal 
pecten; 3 and 4 stalked, 5 absent, 6 and 7 connate, 8 so closely 
approximated to cell on basal half as to appear coincident. 
An interesting form, undoubtedly allied to Pyrgotis, 
yet very distinct. 
TRANS. ENT. SOC, LOND. 1913.—PaRTI. (JUNE) 
