154 NEUROPTERA OF NORTH AMERICA. 



wings hyaline, a broad, basal, longitudinal stripe, an abrupt, 

 medial band, and the apex, rufo-fuscous ; the males with two 

 alternate spots, and a spot at the anal angle of the posterior wings, 

 milky-white ; pterostigma large, black ; membranule white ; six- 

 teen antecubitals ; thirteen postcubitals ; four discoidal areolets. 



Length 48 52 millim. Alar expanse 86 90 millim. Ptero- 

 stigma 6 millim. 



Hah. New York ; New Jersey ; Philadelphia : Boston ; Balti- 

 more (Uhler); Texas; Mississippi (Edwards). 



9. L. forensis ! 



Libellula forensis Hagen ! 



Rufo-fuscous, villose ; front lurid, above brassy-black ; dorsum 

 of the thorax pruinose, the sides fuscous, each side binotated with 

 yellow ; feet black ; abdomen stout, the apex attenuated, rufous, 

 the base pruinose, the apex fuscous, sides spotted with yellow, 

 venter fuscous, spotted with yellow ; wings hyaline, a broad basal 

 stripe, and a broad nodal band, rufo-fuscous ; two alternating 

 spots, and the anal part of the posteriors milky- white ; pterostigma 

 moderate, black ; membranule white. Male. 



Fourteen antecubitals ; twelve postcubitals ; four discoidal are- 

 olets. 



Length 47 millim. Alar expanse 78 millim. Pterostigma 4 

 millim. 



Hob. California (Berlin Museum). 



10. L. deplanata ! 



Libellula deplanata Ramb.! Neuropt. 75, 61. Libellula exusta Say, Jour. 

 Acad. Philad. VIII, 29, 18. 



Rufo-fuscous, villose ; front luteous, vertex fuscous ; the thorax 

 rufous in front, with two yellow stripes, margined exteriorly with 

 fuscous; feet fuscous; the abdomen short, triquetral, rufous, a 

 dorsal stripe and the margins and sutures blackish-fuscous ; wings 

 hyaline, anterior ones with two lines at the base, posterior ones 

 with a triangular spot at base, divided with yellow, rufo-fuscous ; 

 pterostigma small, fulvous; membranule whitish; twelve antecu- 

 bitals ; nine postcubitals ; three discoidal areolets. 



Length 32 millim. Alar expanse 56 millim. Pterostigma 3 

 millim. 



Hob. Georgia; Massachusetts (Say). I am not quite sure 

 whether it belongs to this genus. 



