KELLICOTT. 33 



First Division. 



The species of this group are all blue or green and 

 black, or greenish and pale when teneral. They have 

 three antenodal cells (Selys) and can be most easily 

 separated by the character of the abdominal append- 

 ages of the male seen in profile : 



(1). Superiors with two equal branches, separated by a deep 

 rounded sinus ; inferiors as long ..ebriutn. 



(2). Superiors as long as 10, the upper branch long, stout, de- 

 curved apically, lower very short directed downard; the 

 slender inferiors reaching the lower branch of the superiors 



aspersum. 



(3). Superiors longer than 10, the upper branch more slender 

 thai! in aspersum, the lower directed downards and inwards : 

 the inferiors reaching nearly one third of their length beyond 

 the lower branch of the superiors traviatum. 



(4). Superiors exceeding half of 10, broad, excavated at distal ex- 

 tremity, sinus occupied by a large, pale, tubercle, lower angle 

 ( branch ) prominent civile. 



(5). Superior appendages similar to the last, a little shorter, less 

 wide apically in profile, the lower angle not so prominent 



carunculatum. 



(6). Superior appendages short, wedge-shape, slightly curved up- 

 ward at apex; inferiors decidedly longer, upper edge straight, 



hageni. 



(7). Superiors relatively somewhat longer than in the last, 

 base thick, apex turned down and within ; inferiors slightly ex- 

 ceeding them '. geminatum. 



(8). Superiors short, upper branch short, distally rectangular, 

 lower branch longer, directed upwards, obtuse; inferiors as 

 long as upper branch doubledayi. 



Second Division. 



The species are blue and black (exsulans and di- 

 vagans ) and orange or green and black (signatum, pol- 

 lution and fischeri.) 



They are separable as in the former group by pro- 

 file view of the male abdominal appendages. 



( 1 ). Superiors half as long as 10, two branches, upper thick, lower 

 longer, slenderer, sinus deep ; inferiors acute, as long as upper 

 branch of superiors exsulans. 



(2). Superiors less than half of 10, scarcely divided, upper part 

 thick and rounded, lower slender directed downward ; inferiors 

 a little longer divagans. 



