DIPLAX. 181 



13. D. ochracea! 



Libellula ochracea Burm.! Handb. Ill, 854, 38. — Libellula fervida Erichs.! 

 Voyag. Schomburgk II, 584. — Libellula justiniana Selys. Poey, Ins. 

 Cuba, 450. 



Rufous, or yellowish; mouth yellow, front rufous above; thorax 

 rufous or yellow, dorsum pointed with fuscous ; sides inferiorly 

 bright yellow; feet black, base of the femora partly yellowish; 

 abdomen a little thickened, short, triquetral, rufous or yellowish, 

 a dorsal stripe and each side a lateral one, subraaculose, nigro- 

 fuscous ; the apical segment and appendages yellowish; genital 

 hamule bifid, the external branch stout, truncated ; the internal 

 branch small, unguiculated; genital lobe equal, obliquely truncated 

 behind; vulvar lamina triangular, erect, excavated; wings hyaline, 

 the base flavescent, or rufescent; pterostigma rather long, oblong, 

 yellowish ; membranule blackish-gray. 



Adult Male. Almost entirely rufous; — female with the apex of 

 the wings sometimes a little infuscated. I saw a very adult male 

 from Surinam, which was almost entirely black, the front chalybeous 

 above, the base of the wings brownish-black, and the abdomen 

 partly pruinose. 10 — 11 antecubitals ; 1 — 8 postcubitals ; three 

 discoidal areolets, then two. 



Length 30 — 35 millim. Alar expanse 50 — 56 millim. Ptero- 

 stigma 3 millim. 



Hab. Choco, New Grenada (Schott) ; Cuba (Poey) ; Surinam, 

 British Guiana; Bahia, Brazil; Porto Cabello, Yenezuela; Tam- 

 pico, Mexico (Saussure). 



It is a common species in meridional America. 



14. D. justiniana. 



Libellula justiniana Selys. Poey, Ins. Cuba, 450. — Libellula minuscula 

 Ramb. Neuropt. 115, 118, in part. 



Fuscous ; front above, and the vertex chalybeous (adult male), 

 or yellowish (teneral male and female); thorax yellow, dorsum 

 each side fuscous, or altogether blackish-fuscous (adult male) ; feet 

 black, femora yellowish in part ; abdomen short, slender, trique- 

 tral, yellowish, each side spotted with black, or black, pruinose 

 (adult male); appendages brownish-black; genital lobe broader 

 at the apex, oval; vulvar lamina broad, oval, excavated, suberect; 

 wings hyaline, base of the anterior ones a little flavescent, base of 

 the posteriors broadly rufo-fuscous, or flavescent ( 9 ) ; pterostigma 



