HEMIPTERA HOMOPTBBA POLGOJftlNA. 297 



iiiiiia, but below that the veins are wholly obliterated. The sutura clavi 

 must be very brief (as we should, perhaps, expect it to be in a wing with 

 so short a costal areole), since no sign of it appears on the basal patch : it 

 must terminate before the branching of the ulnar vein. The tegtnina are of 

 very large size, the costal margin regularly and gently arched, the inner 

 margin almost straight, and the apex very regularly convex, at least on the 

 upper half. 



Length of fragment, 23.75 mm ; estimated length of the tegmina, 25 mm ; 

 breadth in middle, 9.5 mni . 



Similkameen River, British Columbia. One specimen, No. 77, Geo- 

 logical Survey of Canada, by Dr. G. M. Dawson. 



Subfamily ACHILIDA Stal. 



No fossils have heretofore been referred to this subfamily, and it is 

 with doubt that a single species from Colorado is here regarded as a mem- 

 ber of it. 



ELIDIPTERA Spinola. 



A sing.e species doubtfully referred here has been discovered in the 

 Oligocene of Florissant. 



ELIDIPTERA REGULARIS. 



PI. 19, Fig. 13. 



This curiously veined insect would appear to fall in the neighborhood 

 of this genus. The whole of the neuration can not be made out, but the 

 longitudinal veins are few and distant and apparently wholly unconnected 

 I iy cross-veins until just before the apical margin where the cross-veins 

 tui in, with apparently the tip of the radial nervure, a continuous vein which 

 approaches the margin in the outer half of the wing, then curves and fol- 

 lows subparallel to the outer margin, with which it is connected by equi- 

 di-l.iiit veins forming apical cells but little longer than broad, excepting at 

 the costal margin, where the vein diverges from the border and the connect- 

 ing vein* become very oblique. The legs are slender, stiB, and straight, 

 tin- hind tibia- 1111:11 in. -d, the hind tarsi delicately and very briefly spined at 



tin- tip nf eiich juillt. 



I.. -n-tli .if bodv, 4.-J.V 11ID ; breadth, 1.5 mm ; length of tegmina, 4 mm ; of 

 hind tibia-. 1.1 



Florissant. ( )in- specimen, Xo. 12785. 



