of Hemiptera Heteroptera from Japan. 429 



A remarkable genus, which at first sight reminds one of a 

 minute species of Nysius with the eyes of Henestaris, between 

 which genera it apparently stands. Independently of size, the 

 shape of the posterior margin of the corium and the toothed 

 thighs will separate it at once from either of these. 



Genus Tropistethus, Fieb. 

 Tropistethus antennatus. 



Black, shining, clothed with fine yellow subdepressed hairs. 

 Antennce black, last joint canary-yellow. Glavus and corium 

 pale brownish ochreous, the latter posteriorly brown, irregu- 

 larly punctured. Membrane abbreviated, pale fuscous, with a 

 darker triangular patch at the base, its lower margin bordered 

 with white. 



Head black, shining : face, central lobe red or red-brown. 

 Antennm black, terminal joint canary-yellow. Eyes purplish 

 brown. Rostrum brownish ochreous, apex black. 



Thorax. — Pronotum black, hinder angles and generally a 

 portion of the posterior margin adjoining pale brownish ochre- 

 ous. Scutellum black, dull; disk flat; apex very narrowly 

 brownish. Elytra : clavus pale brownish ochreous, with three 

 rows of brown punctures : corium brown, with a pale triangular 

 patch extending from the base to the middle of the anterior 

 margin, its inner angle reaching on to the disk beyond the 

 first nerve, down the exterior margin of which is a row of 

 fine brown punctures ; next the inner margin a narrow pale 

 streak extending almost from the base to in a line with the 

 apex of the scutellum ; disk somewhat thickly punctured pos- 

 teriorly ; posterior margin dark brown. Membrane abbreviated, 

 pale fuscous, at the base a darker triangular patch extending 

 from the apex of the anterior margin of the corium to beyond 

 the middle of the posterior margin, having its lower side with 

 a white border. Sternum black. Legs brown ; thighs, apex 

 pale ; tarsi yellow or pale brownish yellow. 



Abdomen beneath black, shining; last genital segment 

 rufous. 



Length 1\ line. 



The yellow terminal joint of the antennae will separate this 

 species from all others of the genus. 



Genus Lasiosomus, Fieb. 

 Lasiosomus jpallipes. 



Head, pronotum, and scutellum black, shining. Antenna? : 

 first three joints pale brownish yellow, base of the second 



