164 British Dragonflies. 



Eur. 20 (1825). Anax forinosa, Steph. Illustr. Brit. 

 Ent. Mand. vi. 81 (1836;; Selys Mon. Lib. Eur. 117 

 (1840); Evans Brit. Lib. 20, pi. 9, f. 2, male (1845). 

 Anax foniiosus, Selys Rev. Odon. iio (1850); Hag. Ent. 

 Ann. 54 (1857); McLach. Cat. Brit. Neur. 14 (1870). 

 AiscJnia aiziirca, Charp. Hor. Ent. 31, t. i, f. i (1825); 

 Charp. Lib. Eur. 99, t. 17, and t. 45, f. i (1840). 



Leach's name. 



In the Edinburgh Encyclopaedia, Vol. ix., \y 137 (181 5), 

 we find that Leach thus refers to the insect : 



Genus, CCCCLXXXIV., Anax. Leach's M.S.S. 



Hinder wings of the male not angulated at their anal 

 edge, but resembling those of the female. x'\bdomen 

 cylindric in both sexes, not clavate. 



Sp. I, Imperator. 



Inhabits England. 



In G. Samouelle's " Entomologist's Useful Com- 

 pendium," p. 258, 1 8 19, the systematic part of which 

 w^as practically due to Leach, occurs the same diagnosis ; 

 but A. imperator is there said to inhabit " England, in 

 the New Forest of Hampshire," and the captor is ad\-ised 

 to stuff the insect. 



[Although we have here no actual description of the species, 

 yet the diagnosis of the genus, of which there is but the one British 

 species, seems to quite justify Kirby in adopting in his catalogue 

 the specific name imperator, as prior to Vander Linden's name 

 formosiis, assigned to it in 1823. The hint to eviscerate and stuff 

 the body is especially applicable to this species.] 



Size. 



Length of Male, 77mm. ; expanse of wings, 104mm. 

 Length of Female, 74mm. to 77mm. ; expanse of wings, 

 102mm. to io8mm.. 



