NOVITATES ZOOLOGICAE Vol. XXXV. SEPTEMBER 1930. No. 4. ON THE JAPANESE GEOMETRIDAE OF THE AIGNEE COLLECTION. By LOUIS B. TROUT. T^HE Geometridae of the extremely rich M. Aigner collection of Japanese Lepidoptera, recently acquired by the Trhig Museum, have been placed in my hands for working out, and include so much of interest that it has been found desirable to catalogue them very completely, and to publish this catalogue together with some notes on variation, taxonomy and synonymy. As there is not, so far as I know, very much phenological information yet published regarding the Japanese Geometridae, I have gives the dates of capture in considerable detail and have frequently commented upon the modifications in the later broods. It might, however, be made a generalisation that the second (and third ?) generations differ chiefly from the first emergences in their smaller size. It is to be added that the collecting on Takao-San was not con-tinuous, and several of the species may really show a succession of emergences throughout the summer months, including August, when the locality was not visited. Takao-San, which is about 60 km. west of Tokyo, must be extremely rich in species. Of the 295 species of Geometridae sent by Mr. Aigner, at least 226 occur in that locality ; with the addition of the winter species and others that were missed, and a probable further addition of many Ewpiihecia which are rarely seen except through breeding, it may be safely said that the number would surpass the total for the British Isles. Subfam. OENOCHROMINAE. l. Alsophila tenuis (Butl.) (1879). Tokyo and vicinity, April 1925, 16 So ; 30 March 1926, 1 J. The series, mostly not in very fresh condition, shows some variation in size and in the degree of separation of the lines, but it cannot be called striking. The corrected synonymy of this species and its nearest ally, ■punctigera Prout (1915), is given on p. 414 of vol. iv of Seitz. 2. Naxa (Psilonaxa) seriaria (Motsch.) (1866). Asamayama, July 1926, 1 J ; Takao-San, 7 July 1926, 1 £. 20 289
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