82 MANDIBULATA. NEUROPTEKA. 



segment luteous. In my specimens the wings are brownish, with the costal 

 nervure reddish. 



Not uncommon, in June and July, in several parts of the country, 

 especially in the New Forest; also taken on Wandsworth and 

 Wimbledon commons, near Hertford and Epping; likewise occa-r 

 sionally at Arno''s Grove, near Southgate. 



Genus XI, — JESKNA, Fabricius, 



Jjabium nearly as in Anax, its central lobe not so deeply emarginate on its 

 margin, and the moveable process at the apex of the two lateral ones longer, 

 more slender^, and acute : lalrum tumid, deeply notched : mandibles acutely 

 dentate: head semiglobose, its front prominent and vesicular: eyes conti- 

 guous : ocelli placed in a line upon a small linear vesicle : abdomen elongate- 

 cylindricj the basal segment slightly tumid, the third rather coarctate ; the 

 apex furnished in the males with three appendages, of variable form, the 

 upper ones elongate, and in the females with two mostly lanceolate : wings 

 ample, rather obtusely rounded at the apex, stigma generally oblong; the 

 inner margin of the hinder pair produced into a more or less acute angle in 

 the males, rounded in the females. 



In this genus the males are distinguished from Anax by having 

 the inner margin of the posterior wings more or less angulated, and 

 sometimes a little waved in the males, but rounded in the females ; 

 both sexes diifer in having the anal appendages somewhat dissimilar, 

 and also the trophi : the species are usually of large size : the 

 abdomen is not clavate in either sex, 



fSp. 1. rufescens. Rufa, thorace Jasciis utrinque duabtis luieis, abdomine nigro 

 lineato, 2-do segmento macula triangulari baseos luted, alis Jlavescentibus, 

 membranuld accessoria magna, nigricante. (Long. corp. ^ unc. 3 — 7 lin. j 

 Exp. Alar. 3 unc. 4 — 8 lin.) 



^sh. rufescens. Van. Linden, p. 27. — ^sh. Dalii. Steph. Catal. 308. No. 3426, 

 ^s. chrysophthalmus. Charpentier, H. E. 33. 



Pale red, or lutescent; tip of the mandibles and line on the crown brown; 

 eyes greenish ; thorax dusky-red, with 2 oblique luteous streaks on each 

 side, and a yellow raised dot at the base of each wing ; abdomen with the 

 basal segment immaculate, second with a triangular spot at the base, and 

 a transverse line on each side luteous ; following to the antepenultimate 

 with a longitudinal central line, a transverse one anteriorly, and one or more 

 abbreviated ones behind black, the two succeeding with the longitudinal 

 one ashy, the last immaculate ; the sides of all with a fuscous dot ; anal 

 appendages fuscous, upper pair lanceolate ; legs black, rusty at the base ; 

 wings^ yellowish, with rusty stigma, - 



