AGRION. 75 



lobe black, emarginated upon the middle ; dorsura of the thorax, 

 brown-brassy, each side with a testaceous stripe, sides and beneath 

 pale; feet pale, femora exteriorly black; abdomen extremely slen- 

 der, brassy-brown, with the incisures pale ; wings hyaline, ptero- 

 stigma rhomboidal, fuscous, interiorly obscurer. (J*. From the 

 description of De Selys.) 



Length near 46 millim. Alar expanse 43 millim. 



Hob. Jamaica (De Selys Longchamps). 



(Ischnura Charp.) 



3. A. iners! 



Agrion iners Hagen! 



Brassy-black, varied with green and blue ; head black, occiput 

 each side with a green point <-f , or a bluish one 9 ; prothorax 

 with the posterior lobe short, broader in the middle, rounded, 

 hardly elevated ; dorsum of the thorax brassy-brown, each side 

 with a narrow green stripe; sides green, a line beneath black; feet 

 black ; femora and tibiae interiorly and the tarsi in part green ; 

 abdomen brassy-black, the first articulations steel blue, 3 5 with 

 a medially interrupted yellow ring upon the base of each, 8 entirely 

 blue, 910 sides blue $ and 9 ; appendages short, the superior 

 ones obtuse, with a process interiorly, beneath ; the inferior ap- 

 pendages a little longer, cylindrical, subarcuated ; the posterior 

 margin of the last segment elevated in the middle, sub-bifid ; the 

 female has an acute ventral spine upon the 8th segment ; wings 

 hyaline, pterostigma rhomboidal, luteous, the anterior ones of the 

 male black, with the apex whitish ; eight postcubital cross-nervules. 



9 . Yar. aurantiaca. Head green in front, with bluish occi- 

 pital points ; dorsum of the thorax orange, a broad brassy-brown 

 stripe upon the middle, the sides dirty green ; abdomen brassy- 

 black, the sides dirty green ; the first segment orange, the second 

 orange, with a brassy-black apical spot; the third to the fifth with 

 a basal yellow ring which is interrupted in the middle; the follow- 

 ing segments are brassy-black ; feet pale, with an external fuscous 

 line. 



Length 31 34 millims. Alar expanse 31 40 millim. 



Hob. New York ; Maryland (Uhler) ; Washington (Osten 

 Sacken) ; Louisiana (Schaum) ; Mexico (Deppe) ; Tampico 

 (Saussure) ; Cuba (Osten Sacken). 



