Coleoptcra of Japan. 47 



AjMclerus rvfescens. 



Apoderus ritfescens, Eoel., Ann. Soc. Ent. Belg. xvii., 

 p. 135. 



This was described by M. Eoelofs from a single female. 

 Mr. Lewis has now obtained a small series which I refer 

 to the species with very little doubt, although none of 

 the specimens quite agree with the type ; they are all 

 considerably smaller, and nearlj' all are males ; the two 

 or three females have the head slightly shorter than in 

 the tj'pical example. I think it probable that all are 

 one species, the original specimen being a very large 

 individual. This being the case, I find there is very 

 little difference between the sexes of A. 7-ufescens, but 

 the male has the head and antennae slightly longer. The 

 under surface is variable in colour, being more or less 

 streaked with black. 



Found at various localities in the main island. 

 M. Eoelofs gives Hakodate as the locality of his type, 

 but it is labelled Awomori. 



III. Elytra rciih acute denticle at the sides just behind the 

 shoulders ,- liead short, scarcely different in the sexes. 



The minute tubercle is the character of this group, 

 but the species are in several other respects quite 

 different from those of the other groups, being of short 

 form, with short antennae, and frequently having the 

 disc of the elytra furnished with a pair of prominent 

 tubercles. The group may be treated as equivalent to 

 Jekel's subgenus Hoplapoderus. 



Apoderus latipennis. 



Apoderus latipennis, Jekel, Ins. Saund., ii., p. 179. 



A. latipennis is apparently a common insect in the 

 main island of Japan, and was procured in several 

 localities. 



Apoderus suhornatus, n. s. 



Brevis, latiis, niger, sat nitidus, aiitennis pedibusque flavis, 

 femoribus posteriovibus ad apiceni nigris ; prothorace disco sub- 

 tiliter rugoso, lateribus pone hurueros denticulatis, disco tuberculis 

 duobus magnis, ad basiu dense snbtiliter punctatis, ad apicem fere 

 laevigatis. Long. 7A mm. 



