Coleoptera of Japan. 45 



proves to be the other sex of the species whose male only 

 was described, as above mentioned. 



Apoderus roelofsi. 



Apodcrus roelofsi, Har., Deutsche. Ent. Z., 1877, 

 p. 358. 



Extremely similar to A. erythropterus, var. atricolor, 

 but easily distinguished by the more elongate head and 

 antennae, and by the hind tibige being nearly straight 

 externally at the apex. The male varies greatly in size, 

 and in the elongation of the head and antennae, and in 

 the smallest specimens of this sex the head differs from 

 that of the female only in being less inflated, and in 

 being provided with a very short cylindrical neck behind. 

 Faust, in Deutsche, ent. Z., xxvi., p. '.^92, has described 

 an Apodej-us color atus from Wladiwostock, which he says 

 is closely allied to A. roelofsi, but differs in having the 

 hind body flavescent : that would scarcely be a sufficient 

 character to distinguish the two ; and I am in some doubt 

 about Faust's species, because he further remarks that 

 the female can be distinguished from the female of 

 A. nitens, Koel., oiili/ hy the flavescent hind body; but 

 if A. coloratus is allied closely to roelofsi, then it may 

 be distinguished with complete certainty from A. nitens 

 in each sex by the shape of the lower part of the hind 

 tibia. 



A. roelofsi was met with by Mr. Lewis at several 

 localities on the main island, and also at Hakodate, but 

 only in a few exam[des. 



Apoderus fulvus. 



Apoderus fulvus, Eoelofs, Ann. Soc. Ent. Belg., xvii., 

 p. 130. 



The elongation of the head and antennae in the male 

 of A. fulvus is a variable character, and, as the slender 

 posterior portion of the head in the male is not abruptly 

 defined, but is only a gradual attenuation, the species is 

 very difficult to place, and forms, in point of fact, a quite 

 natural transition between Groups 1. and II. 



Found only in Kiushiu. 



