460 Mr. David Sharp on the 



Extremely similar to C. placidas, but readily dis- 

 tinguished by the coarser punctuation of the thorax and 

 elytra, the latter being also less deeply striate behind. 

 It is distinguished from C. ustus by the shorter form, 

 blacker and more unicolorous upper surface, and by the 

 rows of punctures on the elytra being deeper at the 

 extremity. 



I have seen only two examples, found at Nikko. 



Cerci/on rotundulus. 

 Breviter ovalis, convexior, ferrugineus. antennis palpisqiie tes- 

 taceis, supra piceus, nitidus, prothorace sat crebi'e et sat fortiter 

 punctato, elytris aequaliter ci'enato-striatis, interstitiis parce punc- 

 tatis. Long. 2 mm. 



Distinguished from C. ustus and C. j^lacidus by the 

 shorter and more convex form, and from the former by 

 the much less punctate elytra ; and from ( '. j^ldcidus by 

 the strife being less deepened behind, and it has more- 

 over the basal joint of the hind tarsus much shorter 

 than either of those species. 



Only two examples have been seen by me : Miyano- 

 shita. May, 1880, and Chiuzenji, August 19th, 1881. 



Cercyon ruhicundus. 



Rotundulus, convexus, fen'Ugiueus, nitidus, antennis palpisque 

 testaceis sat crebre subtiliter punctatis, elytris seriatim sat fortiter 

 punctatis, seriebus postice baud magis impressis. Long. 2 mm. 



This little insect will be distinguished amongst its 

 allies by the rotund form and the shining, more pallid, 

 upper surface. It has short legs, and the polished space 

 on the middle of the metasternum is less expanded 

 laterally than is usual, and is flat and very definitely 

 punctate. 



Miyanoshita and Nagasaki. 



Oosternum sorex. 



Cercrion sorer, Sharp, Trans. Ent. Soc. Lond., 1874, 

 p. 418. 



I indicated when describing it the probability that 

 this insect would have to be generically separated from 

 Cercyon, and it now appears that it may be placed in 



