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Show 1888.] LEPIDOPTERA OF JAPAN AND COREA. 581 describe as new to science, 20 are from Mr. Pryer's collection and the remaining 18 were discovered by myself during the summer of 1886. Considering that in a single season I succeeded in taking 80 per cent, of the species of the groups referred to in this paper as occurring in Japan, but that, although collecting for the greater part of the time in localities never before visited by an entomologist, I only succeeded in capturing 18 new species, we may conclude that the Lepidopterous fauna of Japan is fairly well known. It is satisfactory to note that of the 352 species included in this paper over 200 were described in this country, principally by Mr. Butler, Mr. Moore, and Mr. Walker; many, however, as will be seen from the synonymy, have been subsequently redescribed on the continent from specimens received from N.E. Asia, by entomologists unacquainted with tbe types in our National Collection. 1. CEPHONODES HYLAS. Sphinx hylas, Linn. Mant. i. p. 539. Sphinx picus, Cram. Pap. Exot. ii. p. 83, pi. 148. fig. B. Sesia hylas, Fabr. Ent. Syst. iii. 1, p. 379. 3; Walk. Cat. Lep. Het. viii. p. 84. Cephonodes hylas, Hiibn. Verz. Schmett. p. 131. 1402. Hemaris hylas, Saalm. Lep. Madag. i. p. 117, pi. 3. fig. 40. Several specimens from Satsuma in May and Nagasaki in May and June, and there were six examples in Pryer's collection. Satsuma and Nagasaki (Leech); Yokohama (Pryer) ; and generally distributed throughout the warmer portions of the Old World. 2. HEMARIS RADIANS. Sesia radians, Walk. Cat. Lep. Het. viii. p. 84 (1856). Hemaris radians, Butl. 111. Typ. Lep. Het. pt. ii. p. 1, pi. xxi. fig. 2(1878). Hemaris mandarina, Butl. Proc. Zool. Soc. 1875, p. 239. The fuscous band on the outer margin of the primaries is variable as regards width, and the radiations emanating therefrom towards centre of wing are often conspicuous, but in some examples these are entirely absent. These latter agree exactly with description and figure of H. mandarina, Butl., from Shanghai. Appears to be the Oriental representative of H. bombyliformis as H. alternata is of H.fuciformis. Yokohama (Jonas and Pryer) ; Oiwake (Pryer); Nagasaki, Fushiki, Gensan (Leech) ; Shanghai (Fortune) ; Kiukiang (Pratt) ; Corea (Herz). 3. HEMARIS ALTERNATA. Sesia alternata, Butl. Ann. & Mag. Nat. Hist. (4) xiv. p. 366 (1874). Hemaris alternata, Butl. 111. Typ. Lep. Het. pt. ii. p. 1, pi. xxi. fig. 2 (1878). Tbe inward radiation is sometimes so pronounced as to give an appearance of opacity to the disk of the wing. |