158 NEUROPTERA OF NORTH AMERICA. 



stripe ; abdomen triquetral, fuscous, pruinose, beneath yellowish ( J* ), 

 or rufous, a dorsal, brownish-black stripe, absent anteriorly ( 9 ) ; 

 feet black, femora partly rufescent ; wings hyaline, the anterior 

 margin entirely flavescent, a basal, not well terminated, fuscous 

 streak, and the apex (in the female) also fuscous ; pterostigma 

 large, rufous ; membranule whitish ; sixteen autecubitals ; twelve 

 postcubitals ; three discoidal areolets. 



Length 46 millim. Alar expanse t4 millim. Pterostigma 6 

 millim. 



Hah. Baltimore, Maryland ; New Jersey (Uhler) ; Carolina. 



18. L. funerea! 



Libellula funerea 



Male Adult. Black ; mouth and front brassy-black ; feet black, 

 the four posterior tibite yellow exteriorly; abdomen slender, trique- 

 tral, black ; the appendages yellow ; wings blackish-fuscous ; the 

 apex, and base of the anterior ones hyaline ; pterostigma large, 

 black, membranule black. Teneral male and the female approach- 

 ing a yellow color, the mouth and front yellowish ; thorax yellow, 

 the dorsum each side, infuscated ; feet lurid ; abdomen yellowish, 

 the dorsum and sides subinfuscated; the wings somewhat yellowish, 

 the apex hyaline, the apical margin infuscated ; pterostigma pale ; 

 twelve autecubitals ; ten postcubitals ; three discoidal areolets. 



Length 50 millim. Alar expanse 70 millim. Pterostigma 5 

 millim. 



Hab. jNIexico. 



19. L. umbrata! 



Lihellula umbrata Limie, Syst. Nat. 903, 13 ; Fab. Syst. Eut. 422, 14 ; 

 Sp. Ins. I, 522, 18; Mant. Ins. I, 337, IS ; Ent. Syst. II, 378, 21 ; 

 Bui-m. Handb. II, 856, 48. Ramb. ! Neuropt. 73, 58. Selys ! Poey, 

 Ins. Cuba, 448. — Libellula unifasciata De Geer, Mem. Ill, 557, 3 ; 

 pi. xxvi, fig. 4. — Libellula fallax Burm. ! Handb. II, 855, 45 (tene- 

 ral). — Libellula subfaciata Burm.! Handb. II, 855, 46 (male teneral). 

 — Libellula tripartita Burm.! Handb. II, 856, 47 (male adult). — Li- 

 hellula ruralis Burm.! Handb. II, 856, 49 (female). — Libellula flavi- 

 cans Ramb.! Neuropt. 87, 79 (female). 



Male teneral, and Female. Olivaceous, mouth and front flave- 

 scent ; dorsum of the thorax obsoletely varied with fuscous ; feet 

 fuscous, femora partly yellowish ; abdomen olivaceous, a dorsal 

 stripe, almost absent anteriorly, and the apex of segments 4 — 10,- 



