460 Dr. D. Sharp on 



broad, not acuminate. Thorax not quite so lon^ as broad, 

 much narrowed in front, like the head bright reddish yellow. 

 Elytra rather longer than the thorax, the apical margin 

 black, the black colour broader towards the outer angle and 

 along the outer margin extending far forwards, but not 

 reaching the shoulder, the dorsal series of punctures placed 

 in a well-marked depression, the epipleural line very closely 

 and coarsely punctate. Hind body black, coarsely and rather 

 closely punctate, the two basal segments impunctate on the 

 middle. Anterior coxae scabrous. The male has the hind 

 margin of the penultimate ventral plate produced somewhat 

 in the middle, and in front of this there is a carina becoming 

 behind gradually more elevated. The hind margin of the 

 terminal plate is densely hispid. 



Although the characters of the scabrous front coxse and 

 the margined base to the thorax in conjunction with the 

 rather slender sublinear palpi are sufficient to make this a 

 distinct genus, I do not propose a name for it, as much dis- 

 crepancy of opinion prevails concerning the allied genera. 



Nikko, Yuyama, Kashiwagi, and Nara, in the early 

 summer, ten examples ; also in Eastern Siberia. 



Megacronus. 



Under this name I unite for the present purpose the genera 

 distinguished by Key under the names Bryocharis^ Mega- 

 cronus^ and Bryoporus, feeling that in the present early and 

 extremely incomplete state of our knowledge of the insects of 

 this family it is not advisable to make use of more generic 

 names than are necessary. 



Megacronus prolongatus^ n. sp. 



Elongatus, subdepressus, rufiis ; abdomine rufo-obscuro ; elytris 



crebre fortiter irregulariter punctatis. 

 Long. 8 millim. 



Antennae elongate, third joint very long, of fourth to tenth 

 each is shorter than its predecessor, the fourth being greatly 

 longer than broad, the tenth about as long as broad, terminal 

 joint a little longer than the tenth ; the middle joints are a 

 little infuscate. Head rather small, concolorous with the 

 thorax ; this latter with two punctures on the disk in front of 

 the middle. Elytra longer than the thorax, rather coarsely 

 punctate, the punctuation not serial. Hind body elongate 

 and slender, of a dusky red colour, with the apex clearer red, 

 rather coarsely punctate. 



