DYTHEMIS. 163 



black; fifteen antecnbitals ; 8 10 postcubitals ; three discoidal 

 areolets. 



Length 39 millim. Alar expanse 65 rnillim. Pterostigma 3 

 millim. 



Hab. St. Domingo, Port au Prince ; Cuba (Poey). 



2. D. velox! 



Dythemis velox Hagen ! 



Brownish-black ; labium and front yellowish-green ; thorax fus- 

 cous, subaeneous, the dorsum with a middle line, a lateral one each 

 side, and a transverse one before the wings, yellow ; sides yellow, 

 with four fuscous stripes; feet black, anterior femora yellow be- 

 neath ; abdomen slender, the apex thicker, brownish-black, dorsum 

 of segments 1 7 each side with a greenish-yellow spot, that of 

 the seventh segment larger, those of the basal segments double, 

 the third segment each side yellowish-green ; appendages black ; 

 wings hyaline, the extreme base rufo-fuscous, the apex fuscous ; 

 the pterostigma black ; membranule black ; 14 16 antecubitals ; 

 9 10 postcubitals; three discoidal areolets. 



Length 44 millim. Alar expanse 70 rnillim. Pterostigma 4 

 millim. 



Hab. Pecos River, Western Texas (Capt. Pope). 



3. D. fugax! 



Dythemis fugax Hagen ! 



Brownish-black ; mouth and front luteous ; thorax fuscous, or 

 the dorsum having each side a broader stripe, and transverse streak 

 before the wings, yellowish-green ; sides yellowish-green, with four 

 black stripes; feet black; abdomen slender, the apex stouter, 

 nigro-fuscous, dorsum of the second segment with a trilobed spot, 

 segments 3 to 6 with a double spot each side, and the seventh with 

 a larger spot each side, greenish-white ; segments 1 7 with a 

 greenish-white spot each side, laterally; appendages black; wings 

 hyaline, the extreme apex sometimes infuscated, the base with a 

 large, fulvous spot, fenestrated with fuscous, and including two 

 basal, brassy-fuscous streaks, upon all the wings ; pterostigma 

 black; membranule whitish-gray; 13 15 antecubitals; 8 9 

 postcubitals ; three discoidal areolets. 



Length 45 millim. Alar expanse 76 millim. Pterostigma 4 

 millim. 



Hab. Pecos River, Western Texas (Capt. Pope). 



