of Hemiptera Heteroptera from Japan. 449 



longitudinal keel not reaching to the apex of the scutellar 

 process. Elytra white ; anterior margin broadly and in- 

 terior margin narrowly brown-black ; cell-nerves brown- 

 black ; central cell suboval, elongated towards the base, 

 divided throughout its length by a slightly curved brown- 

 black line ; longitudinal half of the apical cell brown-black, 

 with a tooth on its inner margin towards the base. Sternum, 

 sides clothed with a thick, shining, silvery-white pile. Legs 

 pale brownish yellow : tarsi, apex of the second joint 

 brownish. 



Abdomen black, beneath clothed with a thick, shining silvery 

 pile. Connexivum pale brown. 



Length f line. 



Very closely related to theM. pygmcea, L. Duf., but differs 

 from that species in having the antenna?, legs, and connexivum 

 pale. On the other hand, the characters on the elytra in both 

 species seem very similar ; and not having seen a macropterous 

 specimen of M. pygmcea, I am unable to point out in what the 

 differences consist. 



This insect is not included in the list given at the commence- 

 ment of this paper, as since its publication I have only re- 

 ceived a specimen from Mr. Lewis. 



Family Naucoridse. 

 Genus Naucoris, Geoffr. 

 {Ilyocoris, Stal, Ofv. Vet. Ak. Forh. 1861, p. 201.) 

 Naucoris exclamationis. 



Head and pronotum yellow ; the former in front with a 

 short, more or less distinct, brown or black clavate streak. 

 Elytra fuscous brown. 



Head yellow. Grown posteriorly somewhat ferruginous, 

 and dotted with numerous dark brown atoms ; in front, and 

 nearer to the centre than the inner margin of the eyes, with a 

 short, more or less distinct, brown or black clavate streak. 



Thorax. — Pronotum on the sides broadly yellow ; disk more 

 or less ferruginous, and dotted with numerous dark brown 

 atoms. Scutellum brownish yellow, disk sometimes brownish, 

 margins brownish yellow. Elytra fuscous brown, very finely 

 shagreened. Wings and nerves milk-white. Sternum yellowish 

 or testaceous. Legs yellowish: thighs, first pair underneath 

 black : tibiae, second and third pairs with long brown spines : 

 tarsi and claws, second and third pairs brownish yellow. 



Abdomen above somewhat ochraceous, fuscous or brownish 



