190 MR. M. jacoby on new [Feb. 17, 



3, Descriptions of the Phytophagous Coleoptera of Japan, 

 obtained by Mr. George Lewis during his Second 

 Journey, from February 1880 to September 1881. — 

 Part I. By Maktin Jacoby. 



[Eeceived February 2, 1885.] 

 (Plate XI.) 



Oiir knowledge of the Coleopterous fauna of Japan has during; 

 late years greatly increased, on account of many entomologists having 

 visited this country, and the collections which tliey obtained having 

 been well worked out by specialists. We have valuable monographs 

 and descriptions by Mr. Bates, v. Harold, v. Kiesenwetter, Kraatz, 

 Baly, and others ; yet, in spite of the considerable material already 

 obtained, each new collection sent home from Japan seems to prove 

 that many years must yet elapse before we can hope to be thoroughly 

 acquainted with its Coleopterous fauna, since so many new species 

 are continually discovered. 



Mr. Bates, in his paper on the Geodephagous Coleoptera obtained 

 by Mr. Lewis during his second journey, has added no less than 

 118 new species as well as many others not previously known from 

 Japan. To his remarks in regard to this journey as well as to the 

 map accompanying his descriptions, and giving particulars as to 

 Mr. Lewis's route (Trans. Ent. Soc. 1883, iii.), I must here refer. 



The Phytophagous Coleoptera of this collection contain, besides 

 those already obtained during Mr. Lewis's first visit to Japan, and 

 described by Mr. Baly, many new forms or species as well as a 

 genus (Hamonia) not formerly recorded from Japan. Here, as in 

 other groups, the relations of Japan to other countries seems to 

 move in the same proportions ; that is, we find identical genera 

 and species which are known either from Siberia, India, and China 

 or the Malayan regions, while a certain amount remains proper 

 to Japan. 



The occurrence in the latter country of such genera as Chlamys 

 and Lamprosoma, which are almost exclusively confined to South 

 America (of Chlamys only 3 species have been described, from India 

 and Malaya, of Lamprosoma a single one from Formosa), is certainly 

 interesting ; amongst the Phytophaga, however, the greater pre- 

 ponderance seems to be given to Siberian forms as far as we are able 

 to judge at present. 



The present paper deals with those genera included to the end 

 of the Chrvsomelidae, while the Halticinae and Galerucinse will form 

 the subject of a second communication. 



Genus H^monia, Latr, 



HjEmonia japana, n. sp. (Plate XI. fig. I.) 



Below black ; above testaceous ; head, antennae, anterior margin, 

 and three longitudinal lines on the thorax black ; elytra witli five 



