PALINGENIA. 43 



the penis is incurved. P. bilineata Say, from N. Red River (de- 

 termined by Mr. Uhler), is colored more like P. limbata from Chi- 

 cago ; Mr. Walker's species require a new examination. 



6. P. occulta. 



Palingenia occulta Walk. ! Catal. 551, 12. % 9 > Imago. 



Testaceous ;*antennae black, the base testaceous; sides of the 

 mesothorax fuscous ; abdomen obscurer, interruptedly bivittated 

 with fuscous ; setae not longer than the body, testaceous, a little 

 hairy ; tarsi and anterior feet fuscous ; wings subcinereous, veins 

 black, basal ones testaceous ; anterior wings yellowish at base, 

 with the costal margin brownish. (From the description of Mr. 

 ■Walker.) 



Length of body 21 — 25 millim. Alar expanse 41 — 50 millim. 

 Setae 19 millim. 



Hab. Arctic America, Lakes Winnipeg and Superior (Richard- 

 son). 



The typical specimens are similar to P. viridescens, but smaller, 

 and the posterior wings are scarcely margined exteriorly. 



7. P. bicolor. 



Palingenia bicolor Walk. ! Catal. 552, 15. 9 Subimago. 



Ferruginous ; thorax each side below, with a black spot ; abdo- 

 men fuscous, beneath paler ; setae long, hairy, testaceous ; feet yel- 

 low, anterior ones brownish testaceous, base of the tarsi whitish ; 

 wings cinereous, the margin pilose, the veins black, margined with 

 fuscous. 



Length of body 12 millim. Alar expanse 27. Setae 24 millim. 



Hab. St. Martin's Falls, Albany River, Hudson's Bay (Barn- 

 ston). 



8. P. decolorata ! 



Palingenia decolorata Hagen ! 



Luteous ; head brownish-black, antennae pale ; prothorax nar- 

 rower anteriorly; anterior feet blackish, posterior ones luteous; 

 mesothorax yellowish-fuscous ; abdomen luteous, sides striped with 

 obscure fuscous, setae luteous, intermediate very short ; wings yel- 

 lowish-hyaline, veins luteous, the subcosta fuscous. (Imago.) 



Length of body 16 millim. Alar expanse 30 millim. Setae 30 ? 

 millim. 



