Heteropterous Hemrptera. S7 



nent beyond pronotal apical angles, vertex three times broader than 

 an eye, with an impressed longitudinal line on each side extended 

 from near the ocelli to the level of anterior end of eyes, first two 

 antennal joints on their outer side studded with very sinall black 

 granules, rostrum reaching a little beyond front coxae, first joint 

 not quite reaching anterior margin of eyes, second as long as first, 

 reaching anterior margin of prosternum. third and fourth together 

 slightly longer tlian second, of equal length, apical half of fourth 

 joint black. PrOnotum as broad as long and two-thirds broader at 

 base than at apex, lateral margins straight, basal margin a little 

 rounded between its lateral h)bules. Scutellum equilaterally triangu- 

 lar, with a percurrent narrow smooth median ridge. Orificia short, 

 curved, callosely margined, apically lobulately subprominent. 

 Hemelytra reaching somewhat beyond base of female dorsal genital 

 segment, inner half of mesocorium quite hyaline and impunctate, 

 only with a row of punctures along the cubital vein, apical margin 

 of corium straight with a small obtusangular sinuosity near apex of 

 clavus and a very slight and short sinuosity a little before middle, 

 clavus with a single row of punctures between the vein and the 

 suture, which is shorter than apical margin of corium. claval com- 

 missure slightly shorter than scutellum, veins of membrane straight 

 and simple. Abdomen in the female with the last dorsal segment 

 rather deeply arcuately sinuate at apex, in the middle only half 

 the length of the preceding segment, female dorsal genital segment 

 more than twice the length of last dorsal segment, produced beyond 

 the ventral genital segments, tapering toward the apex which is 

 rather deeply but narrowly cleft, fiftli ventral segment (2) in the 

 middle sinuate to the very base for reception of the sixth segment. 

 (Last antennal joint and fore and hind legs wanting in the type). 

 Length, ? 7.5 mm. 



Stevenson River. 



Differs from S. macrefa, Horv. (the only other known species of 

 the genus) by its larger size and by having the eyes narrower and 

 less prominent, the rostrum (especially its second joint) shorter, the 

 scutellum medially keeled, the mesocorium hyaline only in its inner 

 half, the black punctures of the head and pronotum differently dis- 

 tributed, etc. If the specimen descriVjed by Horvath really be a 

 male, the apex of the abdomen is bifid in both sexes of this genus. 



26. DiEucHES, n. sp. 

 Bagot's Creek. 

 A single mutilated specimen, unfit for description. 



