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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.) 



