KELLICOTT. 43 



thorax marked as in the male ; the hiimerals have a 

 bright brown stripe through the middle covering both 

 sides of the suture ; legs paler ; pterostigma yellow ; 

 dorsum of abdominal segments 1-8 black with apical 

 rings 2-7, segments 9 and 10 are blue with two triangu- 

 lar, basal, black spots on 9, or nearly as often with a 

 single spot covering from one third to two thirds of the 

 top of the ring. 



The. border of 10 in the male has a bifid process 

 above ; the abdominal appendages are black, about half 

 as long as 10, bifid, hairy ; from above the sides of the 

 upper branch are nearly parallel, obtuse, outer angle 

 rounded, inner acute and recurved, the lower branch 

 thicker, longer, obtuse, smooth; in profile both branches 

 are obtuse, the upper shorter, the whole with the ap- 

 pearance of a clumsy hand of a cray fish. 



The inferiors are black, curved upwards, shorter 

 than the lower branch of su23eriors. The appendages of 

 the female are very short, conical, blue ; the ovate 

 valves and processes are pale. , 



Exsulans is one of the most common and graceful 

 species of the Agrions. It occurs everywhere, from 

 June until September about all sorts of water living and 

 stagnant. 



Enallagtna divagans, Selys. 



Length: of abdomen d^ 23, ? 24; of hind wing c^ 

 16, 9 19. 



The male is blue and black. Head black, blue, as 

 follows: narrow, ovate connected occipital spots, front 

 except post-clypeus and base of labrum ; prothorax 

 black v^'ith anterior lobe blue, a triangular blue spot 

 each side of the dorsum of the posterior lobe and a dot 

 of blue on the posterior margin ; thorax black with 

 narrow parallel stripes, — one each side, legs blue and 

 black, pterostigma dark bro^vn with lighter borders. 



