Colcoptcra of Japan. 51 



V. Elytra with dense sculpture, amongst wltirJi are series 

 of coarse punctures, the third interstice broader than 

 the others, and possessing behind the middle an elon- 

 gate group of ir regularly -placed coarse accessory 

 punctures. To this group belongs the u-ell-known 

 European A. coryli. 



Apoderus jekelii. 



Apoderus Jekelii, Ptoelofs, Ann. Soc. Ent. Belg., xvii., 

 p. 132. 



This species is variable in colour, the wing-cases 

 being sometimes concolorous with the other parts of the 

 body, so that the insect is quite black. The male 

 characters vary but little in the small series before me. 

 The species lives on oak, and has been found in Yezo, as 

 well as in the main island and Kiushiu. 



Apoderus uniformis, n. s. 

 Niger, prothorace luargine basali elytrisque rufis, his minus 

 nitidis, fortiter seriatim piinctatis, interstitiis punctulatis tertio 

 pone medium lato punctis adjectis numerosis. Long. 8 mm., 

 elytrorum 5 mm. 



A^ery similar to A. jekelii, but smaller, and with the 

 elytra of a father brighter red colour, and their 

 sculpture rather more regular and less coarse ; but best 

 distinguished by the shorter thorax, and by the male 

 being scarcely different from the female. It is equally 

 close to the European A. coryli, but is rather more 

 slender than that species, and has the serial punctuation 

 of the elytra more definite, and the difference between 

 the sexes less. The male of A. uniformis has the head 

 just perceptibly longer than the female, and the thorax 

 considerably more conical ; the female has the vertex 

 much more convex than it is in ^. coryli. 



The male is readily distinguished from the corre- 

 sponding sex of A. jekelii by the very short head; the 

 females of the two species are very similar, but that of 

 A. uniformis has a shorter, more globose, head, and a 

 narrower thorax, with the sides less constricted in front. 

 There is scarcely any difference between the antennae of 

 the two sexes of A. uniformis. 



Found at Oyama and Nikko in May and June by 



E 2 



