A SYNOPSIS OF THE BRITISH DRAGON-FLIES. 41 



depressed, with yellow spots on the sides ; powdered 

 with blue in the adult $ ; anterior wings with a 

 longitudinal rusty blackish band at the base ; poste- 

 rior wings with a triangular spot of the same colour ; 

 accessory membrane white. 



3. L. fulva, M tiller; Revue, p. 9. L. conspurcata, F. ; 



Steph. Ev. pi. 16, fig. 3. 



Length 19 lin. ; exp. 32 lin. 



Habitat England ; local. 



Dusky reddish, villous ; abdomen with an apical black- 

 band ; powdered with blue in the adult $ ; anterior 

 wings with a rusty black line at the base ; posterior 

 wings with a line and triangular spot of the same 

 colour; accessory membrane blackish, 



Var. The tips of the wings brown. 



b. Posterior wings without a blackish spot at the 



BASE. 



4. L. cancellata, L. ; Revue, p. 12; Steph. Evans, pi. 



17, fig. 3, and pi. 18, fig. 1. 

 Length 19 lin. ; exp. 32 lin. 

 Habitat England ; local. 

 Yellowish ; abdomen with two black bands ; powdered 



with blue in the adult $ ; wings hyaline ; pterostigma 



and accessory membrane blackish. 



L. albistyla, Selys ; Revue, p. 13 ; closely resembles the 

 preceding, differing chiefly by the whitish anal ap- 

 pendages; (these are black in L. cancellata). It 

 occurs at Lvons. 



