8CUD0ER.] CANADIA^f FOSSIL IXSECTS. 13 



the costal vein, but gradually approaching it (the upper radial dividing 

 evenly the intermediate space and bound to each by distant cross-veins) 

 and throwing ofE from its under surface very frequent, closely parallel, 

 oblique and slightly curved branches, which must fill all the apex of 

 the tegmina and which are nowhere connected by cross-veins ; most 

 of them, however, fork about midw;ay in their course upon the frag- 

 ment so as to crowd the margin with oblique rays. 



Length of fragment, 18"" ; greatest breadth of costal area, 1.2"". 



North Fork of Similkameen River. — One specimen. No. 91 ab. Dr. 

 G. M. Dawson, 1888. 



Family JASSID^. 



This family is still represented in the British Columbia tertiaries 

 only by the single specimen long ago described by me ; this is the more 

 surprising as in the other tertiaries of North America it is nearly as 

 well represented as the Cercopidse. 



CcELiDiA Germar. 



The only known fossil species of this genus, which is an existing 

 American type best developed in the tropics but not unknown in the 

 southern United States, are one from the Wyoming tertiaries and that 

 described below. 



Coelidia columbiana. 



Cfoelidia cohtmbianaScuw. , Rep. Progr. Geol. Surv. Can., 1877-78, 

 185 B (1879); Id., Tert. Ins. N. A., 313, pi. ii, fig. 13 (1890). 



A pair of tegmina, in which most of the venation can be made out, 

 with a crushed body and crumpled wings, represent a species of 

 Coelidia or an allied- genus, with rather broad tegmina. The veins of 

 the tegmina are nearly parallel to the gently arcuate costal margin, 

 are equidistant from one another, and are united by cross-veins near 

 the middle of the apical half of the tegmina, the lower ulnar vein, 

 which runs only a little below the middle of the wing, forking at this 

 point ; the upper of the apical areolets, however, is considerably 

 shorter than the others ; the two ulnar veins are united by a cross- 

 vein in the middle of the basal half of the tegmina, while not far from 

 the middle of the tegmina the ulnar and radial veins are similarly 

 united. The tegmina do not taper apically, the extremity is rounded 

 and obliquely truncate, and the sutura clavi is short. The hind wings 

 are provided with an unusual number of cross-veins. 



Length of tegmina, 8""; breadth, 3.25"". 



Similkameen River. — One specimen. No. 75, Dr. G. M. Dawson, 1877. 



