142 NEUROPTERA OF NORTH AMERICA. 



1. P. flavescens ! 



Libellula flavescens Fab.! Ent. Syst. Snppl. 285, 18-19 ; Selys ! Poey, Ins. 

 Cuba, 443. — Libellula viridula Beauv. Ins. Afr., et Amer. Neur. 69, 

 pi. iii, fig. 4. Descript. de l'Egypte, Neuropt. pi. I, fig. 4. Ram- 

 bur! Neuropt. 38, 10.— Libellula analis Burm.! Handb. II, 852, 23. 

 Libellula terminalis Burm.! Handb. II, 852, 24. — Libellula sparshallii 

 Dale. Curtis, Guide. 162, 5. Selys, Monog. Libell. 36. Selys, 

 Revue des Odonat. 322. 



Testaceous-yellow; mouth, front and vertex pale; feet black, 

 base of the femora, and the tibia exteriorly, yellowish ; thorax with 

 black spots inferiorly; abdomen with a dorsal, maculose, black 

 stripe, which is often almost obsolete ; appendages black, yellow- 

 ish at base; wings hyaline, anal margin of the posterior ones fla- 

 vescent, apices of all the wings sometimes a little fumose, ptero- 

 stigma luteous; membranule white; fourteen antecubitals; seven 

 postcubitals; three discoidal areolets. 



Length 43 — 52 millim. Alar expanse 16 — 91 millim. Ptero- 

 stigma 3 millim. 



Hab. It encircles the whole world; no other species occupies so 

 many countries. America. Georgia; St. Louis; Maryland (Uhler, 

 rare and local); Cuba; Martinique; St. Thomas {Lib. terminalis 

 Burm.); Venezuela; Surinam; Para, Brazil. 



Asia. Banco ; Sumatra {Lib. flavescens Fab.); Java {Lib. ana- 

 ZwBurm.); Pondichery; Tranquebar; Bengal; Nicobar Islands; 

 Ceylon ; China ; Japan ; Luzon ; Kamtschatka. 



Oceanica. Oahu; Borabora ; Tahiti; New South Wales. 



Africa. Egypt; Senegambia ; Sierra Leone; Angola; Owara; 

 Congo {Lib. viridula Beauv.) ; Port Natal; Isle of France. 



Europe ? England, Horning (Dale) ; very likely an error. 



2„ P. hymenaea! 



Libellula hymenaea Say, Jour. Acad. Philad. VIII, 19, 1. 



Viridescent;. mouth, front, and vertex yellowish; feet black, base 

 of the femora, and the tibiae exteriorly, yellowish; thorax each side, 

 with two oblique, pale lines ; abdomen with a maculose, dorsal 

 stripe, which is obsolete anteriorly, and the sutures, black ; ap- 

 pendages green; wings hyaline; anal margin of the posterior ones 

 subflavescent, a round, fuscous spot, veined with yellow, before the 

 anal angle ; pterostigma yellowish ; membrane white ; fourteen 



