This Section of Insects may be divided into two families — 
Acrionipa. Leach. Wings erect when at rest. 
LisELLuLIL&. Leach. Wings horizontal when at rest. 
AGRIONIDE. Leacu. 
Acrion. Fabricius. 
Named from aypvos—fierce or wild, in allusion to their habits. 
Stigma rhomboidal. 
The sexes of this genus differ much in colour, the males being 
generally brighter. 
AGRION rubellum. Vander Linden. Plate 3, fig. 1. of 
Figured in Stephen’s Illust. of Brit. Ent. Vol. 6, pl. 29, f. 4.9 
Curtis. PJ. 732. of 
SyYNONYME tenellum. Vill. 
This beautiful species measures, in length of body, from 14 to 15 
lines. 
Expanse of wings, from 17 to 18 lines. 
It is usually found in June, and has been captured in the New 
Forest, at Weybridge, and occasionally near London. 
The female has the abdomen partly black. 
A. xanthopterum. Stephens. Plate 3, fig. 2. 
Length of body, from 15 to 16 lines. 
Expanse of wings, from 19 to 20 lines. 
It has been captured during June near London. 
This figure is from a specimen in the cabinet of James F. Stephens, 
Esq., to whom I am much indebted for many specimens of the 
ace here figured, and for much assistance towards this under- 
taking. 
A. elegans. Vander Lin. Plate 3, fig. 3, 9 fig. 4.2 
Figured as tuberculatum. Charp. Tab. 38, f. 2. 
SyNONYME ezonatum. Leach, 
Length of body, 15 to 16 lines, 
Expanse of wings, 17 to 18 lines. 
