Coleoptera of Japan. 63 



unknown. The species is a true RJu/nchites, with the 

 prosternal epimera joined behind the coxse. 



Rhynckites plumbeus. 



RhyncJiites plamhens, Eoelofs, Ann. Soc. Ent. Belg., 

 xvii., p. 143. 



The British Museum collection includes a specimen of 

 this species from N. China. 



Found on a species of Bryonia. 



RJiynchites amahilis. 



RhyncJiites amahilis, Eoelofs, Ann. Soc. Ent. Belg., 

 xvii., p. 145. 



This was described from two individuals, and two 

 others have now been procured : the sexual differences 

 are very slight, but the male has a rather shorter and 

 thicker rostrum. The species is extremely close to 

 R. jmrallelinus, but the head is a little broader, and there 

 is a slight difference in the sculpture of the base of the 

 elytra ; in R. parallclinus the sutural stria is continued 

 quite straight to the base ; in R. amahilis it diverges a 

 little at the scutellum, and there is an additional large 

 puncture placed on the interstice just where it begins to 

 get broader. 



Faust has described a species, R. Jiirticollis, from 

 Amur-land, w^iich must be very close to R. amahilis. 



Rhynchites placidus, n. s. 

 Caeruleus, pube depressa, pallida vestitus ; elytris regulariter 

 seriatim punctatis, seriebus subtilibiis, ad apicem obsoletis, inter- 

 stitiis dense punctatis, interstitio primo ad basin punctis nuUis 

 (vel tan turn uno) adjectis ; prothorace dense sat fortiter punctato ; 

 capite lato oculis prominulis. Long, cum rostro, 5 mm. 



This is closely allied to R. amahilis, but is easily dis- 

 tinguished by the more fine sculpture, and the pallid 

 depressed pubescence. R. Icevior, Faust, from East 

 Siberia, must also be closely allied to R. placidus, but in 

 the Japanese species the thorax is quite as densely 

 punctate as it is in R. amahilis and parallelinus. 



Three examples ; Tokio, Yokohama, Junsai. 



