PALINGENIA. ' 4 1 



riorly produced in the middle ; apex of the feet brownish, femora 

 pale ; wings whitish, costa a little obscurer. (From the figure and 

 description of Pictet.) 



Alar expanse 26 millim. 



Hah. New Orleans. Not seen by me. Is it P. alba Say? 



4. P. bilineata ! 



Bsetis bilineata Say, Long's Exped. II, 303, 1. P. limbata Pictet, Ephem. 

 146, 3 ; tab. xii. 



Imago J*. Fulvous, antennae pale, basal articulation obscurer; 

 head dusky in front, beneath yellow ; prothorax compressed in the 

 middle, above triangularly tuberculated, each side with a fuscous 

 stripe ; abdomen fulvous, spotted with fuscous ; each side with a 

 medial fuscous stripe composed of oblique striae, margins of the 

 segments fuscous; anterior feet fuscous, basal articles of the tarsi 

 yellow, posterior feet yellow, unguiculi fuscous; setae yellowish, 

 long, apex of the articles annulated with fuscous ; intermediate 

 seta very short; anal appendages yellow, the apex fuscous; penis 

 two-parted, fuscous, apex incurved, oval; wings hyaline, anterior 

 ones with the costal margin fulvous, veins black, some transverse 

 blackish-banded veins ; posterior wings with the apex hardly 

 clouded, transverse discoidal veins banded with blackish-fuscous. 

 Imago .9. Pale yellow; tarsal unguiculi fuscous; abdomen with 

 a fuscous apical band in the middle and interrupted ones on both 

 sides ; wings yellowish-hyaline, costal margin yellowish, longitudi- 

 nal veins yellowish, transverse ones black. 



Subimago 9 . Similar to the imago, the abdomen above ob- 

 scurer, wings opaque. 



Length of body, J^ 16; 9 18. Subimago, 9 22 millim. Alar 

 expanse, J" 34; 9 40. Subimago, 9 48 millim. Length of cau- 

 dal setae, ^ 46. Subimago, 9 25 millim. 



Ilab. St. Peters River, "common" (Say) ; N. Red River (Robt. 

 Kennicott); Maryland (Uhler); Philadelphia; Washington (Osten 

 Sacken) ; St. Louis. The specimens from Washington are yel- 

 lower. 



5. P. limbata ! 



Palingenia limbata Serv. Guer. Icon. Regn. Animal. Ins. tab. Ix, fig. 7. 

 Ephemeia limbata Ramb. Neuropt 295, 4. Walker, Catal. 548, 3. 

 Pal. viridescens Walk. I Catal. 550, 11. Fern. Subimago. Bwtis 

 angulata Walk. I Catal. 564, 28. Male imago. 



