Agrion. 285 



anterior edge blue, hind-margin notched and there edged 

 with bkie ; on 3 to 6 a fine black lateral line extending 

 from the black spot forward along the greater part of the 

 segment ; lower surface bluish, with black mid-ventral 

 line. Anal appendages (Fig. 49), upper smaller, swollen 



Fig. 4g. — Anai. Appendages of Male of Agrion puella. 



Dorsal and Ventral Surfaces. 

 (After Hagen. in De Selys' " Revue.") 



at base, with a small jDointed projection turning down- 

 wards and slightly inwards ; front of swollen part 

 yellowish, rest black ; lower, broad and flattened at base, 

 yellowish, then narrower, turning upwards and outwards, 

 twisted, point turned inwards. 



Female Imago. 



Head, thorax, li'iiigs, and legs as in the male, except 

 that the blue colour is replaced b}' a greenish tint. 

 Prothorax is ver)- little notched or raised behind. 

 Abdomen black-bronze and greenish, black covering 

 nearly the whole of the upper surface ; on segment i, a 

 large, somewhat semicircular spot attached to the hind- 

 margin ; 2. with thistle-shaped spot ; 3 to 6 black-bronze, 

 with a narrow bluish-green circlet interrupted mid- 

 dorsally ; 7 to 10 bronze, but circlets between them bright 

 blue, not interrupted ; hind-margin of 10 notched and 



