Cockerell and Andreivs — Dragon-flies from English Oligocene. 91 



320). The characters in general are like those of modern species, the 

 most noticeable peculiarity being the broad upper side of the quadri- 

 lateral in both wings ; in the anterior wing the upper side of quadrilateral 

 measures 624 m, and the oblique apical side 656; in the posterior wing 

 the upper side is 720 and the apical 560. The quadrilateral is also higher 

 than in modern species, especially that of the anterior wing, the whole 

 tendency being to approach the Hesperagrion type. The subnodus is not, 

 at least in the anterior wing, in a straight line with the nodus, but makes 

 a distinct, though extremely wide, angle with it. There are three cells 

 in a longitudinal row between the quadrilateral and the vertical level of 

 the nodus. Distance from arculus to nodus 4 mm. No. 8647, from the 

 same source, is considered to be the apex of the wing of the same species. 

 The stigma is light brown, and there are only three cross-veins beyond 

 it, as may be seen in the living E. exsulans. There are four rows of 

 square cells beneath the stigma, the arrangement here being as in 

 Telebasis salva Hagen. 



