of Hemiptera Heteroptera from Japan. 447 



golden shimmer in certain lights ; on each side of the central 

 keel between the eyes is a depression ; apex with a yellow 

 margin. Eyes dark brown. Antenna?, yellow, third and fourth 

 joints dusky. Rostrum piceous, shining ; apical half of the 

 third joint and fourth entirely broAvn. 



Thorax. — Pronotumhlack, finely punctured ; lateral margin 

 anteriorly brown, posteriorly yellow, next the base the colour 

 is widened out into a triangular yellow patch ; posterior margin 

 yellow, the colour widest across the scutellum, and with a 

 row of fine black punctures on its inner edge ; disk on the 

 sides with one or two almost obsolete milky white spots. 

 Scutellum black, finely punctured. Elytra black : clavus, 

 posterior margin and apex narrowly yellowish ; base with one 

 or two almost obsolete milky white spots : corium, anterior 

 margin narrowly yellow, within which, at almost regular in- 

 tervals, are five almost obsolete milky white spots ; opposite 

 to these the colour of the anterior margin is paler ; disk with 

 a few small, scattered, almost obsolete milky white spots. 

 Membrane dark fuscous brown, with a few longitudinal whitish 

 streaks round the apex. Sternum black, punctured : pro- 

 stern um, posterior margin brownish yellow; xyphus, margin 

 pale yellow : metasternum, posterior margin brownish yellow. 

 Legs yellow : coxce, first pair fuscous : thighs, apical two thirds 

 of all the pairs on the upper half fuscous brown, inside with 

 one or two rows of fuscous or black punctures : tibice yellow, 

 inclining to brown exteriorly ; apex narrowly blackish ; base 

 of the long, yellow, spinose hairs set in a black puncture : 

 tarsi, first and second pairs yellow, third joint black ; third 

 pair brown, third joint black. 



Abdomen beneath black, posterior margin of some of the 

 last segments narrowly brownish. 



Length 2^ lines. 



I have only seen one specimen of this species. 



Family Gerridse. 

 Genus Limnobates, Burm. 



Limnobates albolineatus. 



More or less dark fulvous brown. 



Head. — Grown with a depression between the eyes ; from 

 the base to the latter a more or less distinct, fine, white, central 

 line ; sides between the base and the eyes more or less broadly 

 black. Face, apex red, shining. Antennae pale brown ; first 

 joint, except the base, pitchy brown ; second, apex narrowly 

 pitchy brown or blackish ; third and fourth blackish. Eyes 



