of Hemiptera Heteroptera from Japan. 433 



ring. Eyes black. Rostrum yellow, first joint pitchy brown, 

 apex piceous. 



Thorax. — Pronotum black ; collar with a punctured central 

 channel ; between the constriction and the posterior margin 

 coarsely punctured ; posterior angles more or less distinctly 

 dark brown. Scutellum black, extreme apex yellow or brownish 

 yellow, sides with a few coarse punctures. Elytra pitchy 

 brown. Clavus pitchy brown, margins paler. Corium pitchy 

 brown ; anterior margin yellowish white from the base to a 

 little before the apex, where it widens and extends for a little 

 way upon the disk, forming an irregular-shaped blotch ; nerve, 

 from the base to about the middle, yellowish ; between the 

 inner edge of the anterior margin and the nerve towards the 

 base, more or less mottled with yellowish ; a little below the 

 inner posterior angle a yellowish spot. Membrane abbreviated, 

 fuscous brown ; nerves white ; a small patch at the apex, and 

 a transverse streak extending from the apex of the corium 

 to about midway across the disk, nearly in a line with the 

 sutural margin, white. Sternum black-punctured. Legs yellow : 

 thighs, first pair pitchy brown, shining, apex yellow ; second 

 and third yellow, the latter before the apex broadly brown : 

 tibice and tarsi yellow, apex of the first and third joints some- 

 what brown. 



Abdomen black. 



Length 2-2 1 lines. 



Genus Metochus*. 



Elongate. 



Head longer than broad. Grown convex transversely. Face 

 convex. Antenna? : first joint stoutest, somewhat clavate, not 

 half the length of the second ; second joint longest ; third and 

 fourth subequal. Rostrum reaching to between the middle 

 pair of coxas. 



Thorax. — Pronotum very much constricted beyond the 

 middle ; anterior margin with a narrow collar ; sides with a 

 narrow margin ; posterior margin slightly concave ; posterior 

 angles raised. Scutellum triangular, elongate. Elytra : anterior 

 margin somewhat concave near the base. Membrane : disk 

 with five nerves, the first two approximating at the base and 

 distinctly waved, third about midway between the second and 

 fourth, curving round near the base towards the fourth and 

 fifth, which are united near the apex of the corium. Sternum : 

 prostemum with a faint central keel, depressed from the an- 

 terior margin to a little before the middle, from thence to the 



* ij.(toxos, a participator. 



