426 Mr. J. Scott on new Genera and Species 



LIV. — On a Collection of Hemijptera Heteroptera from Japan. 

 Descriptions of various new Genera and Species. By 

 John Scott. 



[Concluded from p. 365.] 



Family LygaicUe. 

 Genus Arocatus, Spin. 



Arocatus melanostoma. 



Red, clotlied with very fine depre.ssed yellowish hairs. 



Head red : croivn with a lai-ge round black spot ; face^ apex 

 of the side and central lobes black. Antennce and antenniter- 

 ous tubercle black. Eyes black, sometimes reddish. Rostrum 

 black. 



Thorax. — Pronotuni red, deeply punctured, and with a broad 

 A -shaped black patch not reaching to the anterior or posterior 

 margin. Scutellum black, with a strongly raised red central 

 keel. Elytra red, unpunctured, somewhat shagreened : claims 

 black, base and the margin at the apex next the scutellum 

 red : corium black ; anterior and posterior margins broadly 

 red, apex of the latter narrowly black. Membrane piceous. 

 Stei'num black, deeply punctured, clothed with very fine, de- 

 pressed, yellowish hairs ; orifice of the odoriferous sac red. 

 Legs black. 



Abdomen above red ; beneath red, with a broad black streak 

 along the sides ; last segment, as also the genital segments, 

 black. Connexivum red. 



Length 3-3 1 lines. 



Genus Ischnodemus, Fieb. 

 Ischnodemus spinicaput. 



Head and 2yronotum dull black, thickly punctiired, the former 

 with two spines at the base of the face, longer in the male 

 than the female ; an acute tubercle in front of each eye, and 

 (in the male) the side lobes of the face testaceous, produced in 

 front, flattened, separate. Elytra pale testaceous. 



Head black, thickly punctured : crown convex : face at the 

 base with two long stout spines, and in front of each eye an 

 acute tubercle ; side lobes testaceous, produced in front to 

 about in a line with the basal fourth of the second joint of the 

 antenna?. Antenme black, stout, thickly punctured. Eyes 

 purplish. Ocelli deep red. 



Thorax. — Pronotum dull black, thickly punctured ; anterior 

 margin frequently brown ; |)usterior margin and hinder angles 



