KELLICOTT. 81 



BASI^SCHNA, Selys. 



The single species of this genus is abundant at 

 times, while some seasons pass without its being ob- 

 served at all. It is on the wing earW, specimens having 

 been procured at Columbus as early as the middle of 

 April. 



Basiseschna Janata, Say. 



Length : of abdomen d" ? 43, hind wing d^ ? 36. 



Colors; brown and fuscous. Male; front greenish, 

 above yellow or greenish, with a median, longitudinal, 

 impressed, black marking; occiput and rear of eyes 

 largely 3'ellowish. Thorax, mid-dorsal carina fuscous 

 bordered each side by greenish; two greenish yellow 

 bands edged with fuscous on each side; wings clouded 

 at base, veins brown, pterostigma yellow, membranule 

 white. Abdomen constricted at 3, superior append- 

 ages as long as 9+10, narrow at base, very gradualh^ 

 widening to be\^ond the middle. Here there is a bend 

 and the general direction is directly backward, instead 

 of obliqueh' downward and backwards as before. The 

 apical third is flattened. Inferior appendages conical, 

 one half as long as the superiors. 



The female appendages are shorter, straight, and 

 anal angle of hind wing rounded. 



EPI^SCHNA, Selys. 



Like the two preceeding genera this one contains 

 onh- a single species. It is the bulkiest dragonfly of our 

 fauna. Macromia taeniolata approaches it in expanse 

 but not in size of body. This species differs from other 

 species of the sub-family in the less obvious constriction 

 at abdominal segment three. 



Episeschna heros, Fab. 



Length : of abdomen c? 65 ? 67, hind wing d" 55 ? 

 60. 



