( 413 ) XX. First Report on the Khynchota collected in Japan by Mr. George Lewis. By W. L. Distant. [Read November 7th, 1883.] Plates XIX, XX. Of the extensive and interesting collection of Rhynchota made by Mr. Lewis, the present paper deals with the families Pentatomiclce, Coreidce, Lygcsidce, and Pyrrho-coridce, with a few supplementary descriptions of species belonging to the Reduviidce. The first four families alone are, however, now enumerated, the identification of the remaining Heteroptera and the small collection of Homoptera being reserved for a second paper. The present enumeration comprises 109 species, of which 33 are described as new ; and three new genera are also proposed. The supplementary or anticipatory descrip-tions of Reduviidce refer to four species, thus making a total of 37 presumed novelties. The present material supports the conclusion that the Japanese subregion of the great Palsearctic region possesses but few European or Siberian species, and, what was much less expected, that those from the Amur are also, as a rule, distinct. Thus I formerly received a species of the genus Tropicoris from Japan, which seemed so to agree with the description of the Amurian T. metallifer, Motsch., that I had little doubt as to its identity. On subsequently receiving the true species from the Amur, I found that the Japanese speci-mens were alike in colour and size, but strikingly distinct in the structural character of the pronotal angles. Mr. Scott, who dealt with the former collection made by Mr. Lewis, also enumerated the common European species Gastrodes * ferrugineus, but in the same year the late Dr. Stal — who was no specific splitter — described the Japanese insect as a distinct species. The European species which I have found in these families are — * The generic name Platygaster, as used by both Scott and Stal, is preoccupied in Hymenoptera ; I have therefore followed Dr. Puton in substituting that of Gastrodes of Westwood. TRANS. ENT. SOC. 1883. PART IV. (NOV.)
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