scuDDER.] CAN'ADIA'N' FOSSIL IXSEOTS. 11 



Planophlebia Scudder. 



Planophlehla Scudd. , Rep. Progr. Geol. Surv. Can., 187V-"78, 

 185-186 B (1879) ; In., Tert. Ins. N.A., 296 (1890). 



This name is proposed for a genus of FulgoridjB api)arently belong- 

 ing to the Delphacinje, but differing from all Homoptera I have seen 

 in the remarkable trend of the principal veins of the tegmina, nearly 

 all of which, and certainly all the branches of the radial, as well as 

 most of the branches of the ulnar vein, terminate upon the costal 

 margin, the costal areole being very brief, or less than one-third the 

 length of the tegmina. The radial vein branches very near the base 

 of the tegmina, and its lower branch again a very little way beyond, 

 all three of the branches running in a straight course parallel to one 

 another, and embracing at tip the middle third of the margin. The 

 ulnar vein forks near the outer branching of the radial vein, the upper 

 branch soon dividing again, the lower dividing beyond the middle of 

 the tegmina, all the branches running parallel to those of the radial 

 vein. 



I know of no homopteron the veins of whose tegmima trend as in this 

 genus ; indeed it appears to be quite abnormal in this particular. Nor 

 can Mr. Uhler, to whom I submitted a drawing, find any form Avhose 

 branched veins run toward the costal margin ; but I have in vain at- 

 tempted to believe that I have interchanged the two margins of the 

 tegmina. In point of neuration the tegmina approach most closely, 

 as Mr. Uhler has pointed out to me, to those of Am2)liiscepa bivittata 

 (Say), but even from this it differs widely. 



Planoplilebia gig'aiitea. 



Planophlebia gigantea Scudd., Rep. Progr. Geol. Surv. Can., 

 1877-'78, 186 B (1879) ; Id., Tert. Ins. N.A., 296-297, pi. ii, fig. 16 

 (1890). 



The specimen is very fragmentary, consisting of an upper wing, of 

 which the whole of the costal border as far as the tip, and the basal 

 half of the inner margin can be made out ; but only three patches of 

 the surface with its accompanying veins are preserved — a piece next 

 the base, crossing the wing ; another near the middle, which crosses 

 rather more than three-quarters of it from the costal margin backward ; 

 and a greatly broken patch at the upper half of the tip ; but from these 

 pieces nearly the whole of the neuration, as given in the generic de- 

 scription, can be determined. The costal vein appears to be forked 



