>\ NOPSIS OF SPECIES DESCRIBED 3<J 



LEGIO CORDULIA 



•tor part of the ftead flat, without horn. 



DIVISH >N 1. — Two ii HIND Till 



Epitheca Burmeister. 

 Body shorter, flatter; dorsal books much developed; lateral spini lor 



10. E. bimaculata Charpentier (Eai 



Nympha skins, male and female. Europe. 



Body large, elongated; conical spines behind the eyes long, sharp; abdomen long; 

 truncate al tip; last segmenl very shorl ; dorsal hooks on 3d to 9th egmenl ; lateral 

 spines on 8th and 9th segments sharp, Hat. distant; those of 9th very long, extending 

 beyond the appendages; apical edge of 9th ventral segment hairy. 



11. E. princeps Hagen (liaised.) 



Nympha and skin, male and female. North America. 



Similar to E. bimaculata; body shorter; conical spines behind the eyes less sharp; 

 lateral spines on 9th segment shorter, straight. 



12. E. species ignota 



Two not full-grown nymphae. Illinois. 



Similar to E. princeps ; the two conical spines behind the eyes much longer and 

 more developed than in the younger stages of E. princeps; abdomen larger. 

 May it not belong to E. obsoleta Say ? 



DIVISION II. — Xo eeect Spines behind the Eyes. 



13. E species ignota. 



Two nympha skins. Kentucky. 



Body oblong, a little enlarged and truncate at tip ; head short, diamond-shaped ; 

 forehead flat, square, anteriorly with numerous small spines ; dorsal hooks on 2d to 

 9th segments, the last three short, blunt, on the 9th rudimentary ; lateral spines on 

 8th and 9th segments, flat, sharp; lateral part of these segments scabrous with short 

 bristles; ventral epical edge of 9th with a fringe of hairs. 



Perhaps the nympha belongs to E. Selysii. 



14. E. libera Selys. (Raised.) 



Nympha skin, and a younger nympha. New England. 



Body nearly naked; head diamond-shape, convex between the eyes; mask sprinkled 

 with fine brownish dots; abdomen enlarged af tip; dorsal hooks on 1th to 9 



