170 IV, Descriptions of South American Micro-Lepidoptera By E. Meyrick, B.A., F.R.S. [Read December 4th, 1912.] The 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. (J. 22-23 mm. Head brown, with a white fillet between antennae. Palpi 1^, 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. Hind wings grey; cilia ochreous-grey-whitish. Peru, 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 pccten; 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. — PART I. (JUNE)
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