I.IBEI.LUI.ID.K. CORDULTA. 89 



males rather short : wings moderate, posterior pair of the male with the 

 inner margin angulated, of the female rounded ; stigma rather short. 



The beautiful insects comprised in this genus, or at least the 

 indigenous species thereof, may be known from Libellula by having 

 the prevalent colour of a rich metallic hue ; they differ in the form 

 both of the labium and labrum, and in other minor particulars ; the 

 males have the hinder wings angulated on the inner margin, and the 

 females rounded : these insects, as well as the Libellulae, are distin- 

 guished from all the foregoing genera of this family by having the 

 intermediate lamella of the labium small, and surrounded by the 

 lateral ones. 



Sp. 1. aenea. Viridi-osnea, nitida, abdominis basl suhtus luteo, stigmate atro 

 vel fuscOy appendice anali inferiori maris bifurcatd. (Long. corp. 1 unc. 

 10—11 lin.; Exp. Alar. 2 unc. 8—9 lin.) 



Li. aenea. Linnc. — Donovan, v. xii. pi. 415. — Cor. aenea. Steph. Catal. 309. 

 No. 3435. 



Brassy-green and shining : mouth fuscous, labium luteous ; eyes green ; 

 thorax with a pale reddish pile ; abdomen above brassy-green, the sides at 

 the base and margin of the 2nd segment dull tawny ; anal appendages 

 brassy, upper pair somewhat cylindric, lower deeply bifurcate, the apex 

 of each notched ; legs black; wings hyaline, the extreme base sometimes 

 orange; stigma black or fuscous, rarely ferruginous. Female with the 

 margin of the 2nd abdominal segment luteous, the anal appendages short, 

 and the wings sometimes flavescent. 



Not very uncommon in several places within the metropolitan 

 district towards the end of May or the beginning of June : I have 

 seen it in plenty in Woodford in Essex, and it also occurs at Epping, 

 and near Godalming, rather abundantly. 



Sp. 2. metallica. Viridi-oenea, nitida, abdominis medio incrassato, appendicibus 

 analibus maris simplicibus acuminatis, alis lutescentibns, stigmate luteo. 

 (Long. corp. 1 unc. 11 lin.; Exp. Alar. 2 unc. 9 — 10 lin.) 



Li. metallica. Van. Linden, p. 18. — Cor. metallica. Steph. Nomen. 2d edit, 

 col. 114. 



Brassy-green, shining; head with a curved frontal fascia, the labium and 

 base of the labrum luteous; eyes green, reddish above; thorax with a red 

 down ; abdomen with the edge of the 2nd segment, a dot on each side and 

 a lateral stripe, and with a spot on each side of the base of the 3rd, luteous ; 

 anal appendages short, acute, lower pair shortest and triangular ; legs 

 black, anterior femora luteous at the base ; wings lutescent, stigma luteous. 

 Female with the hinder and lateral margins, and a dot on each side of the 



Mandibui.ata, Voi,. VI., 1.5th Junk, 1836. m 



