HEMIPTERA— HOMOPTEKA— FULGORINA. 297 



mina, 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 tegmina 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°""; estimated length of the tegmina, 25°""; 

 breadth in middle, 9.5""". 



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

 logical Survey of Canada, by Dr. Gr. 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 single 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 

 by cross-veins until just before the apical margin where tlie cross-veins 

 form, 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 wliich it is connected by equi- 

 distant veins forming apical cells but little longer than broad, excepting at 

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

 ing veins become very oblique. The legs are slender, stiff, and straight, 

 the hind tibiae unarmed, the hind tarsi delicately and very briefly spined at 

 the tip of each joint. 



Length of body, 4.25"""; breadth, L5""" ; length of tegmina, 4""™; of 

 hind tibia?, 1.1"'". 



Florissant. One specimen. No. 12785. 



