EPHEMEEID.E. EPHEMERA. 59 



Sp. 11. apicalis. Fusco-ferruginea, nitida, abdominis basi pallida, pedibus 

 ochraceo-ferrugineis, alis hyalinis. (Exp. Alar. 8 lin. ; long. corp. 34 Hn. ; 

 1. set. 5 lin.) 



Eph. apicalis. Steph. Catal. 305. No. 3379. 



Rusty-brown, shining; thorax very glossy; abdomen pale, with the margins 

 of the segments and its apex rusty-brown ; filaments pale lurid, immaculate, 

 with long joints; legs pale ochreous; wings transparent, costa faintly 

 yellowish. 



Also found near London. 



Sp. 12. rufescens. Pallide rufo-J'ulva, subnitida, pedibus rufescentibus posterio- 

 ribus pallidioribus, setis luridisfusco maculatis, alis hyalinis casta Jlavescente. 

 (Exp. Alar. 8—94 li"-; long. corp. 3^ — 4 lin.; 1. set. 4 — 5 lin.) 



Eph. rufescens. Steph. Catal. 305. No. 3380. 



Pale tawny-red, slightly shining; abdomen dusky-red; legs reddish, two 

 hinder pair paler ; filaments lurid, spotted with fuscous, the joints short ; 

 wings transparent, costa yellowish. 



Abundant throughout the metropolitan district at the end of June 

 and beginning of July. 



Sp. 13. rosea. Pallide rosea, subnitida, pedibus pallidioribus, setis luridis,fusco 

 maculatis ; alis hyalinis basi summa et costa dilute roseis. (Exp. Alar. 7 — 8| 

 lin. ; Long. corp. 3 — 4 lin. ; 1. set. 4 — 4^ lin.) 



Eph. rosea. Steph. Catal. 306. No. 3383. 



Pale rose colour, slightly shining ; legs very pale rosy, anterior pair darkest ; 



filaments pale lurid, spotted with fuscous ; wings hyaline, with the extreme 



base and the costa pale rose colour. 



Found near Hertford in June : not very common. 



Sp. 14. helvipes. Piceo-nigra obscura, pedibus helvolis, setis pallide luridis, 

 immaculatis, alis hyalinis. (Exp. Alar. 9 lin. ; long. corp. 4 lin. ; 1. set. 

 3 lin.) 



Eph. helvipes. Steph. Catal. 306. No. 3382. 



Dull pitchy-black, thorax slightly shining; legs pale red, with a rosy tinge ; 

 filaments pale lurid, immaculate, joints short ; wings narrow, transparent, 

 costa slightly tinted with yellowish. 



Also taken near Hertford : apparently rare. 



Sp. 15. dubia. Fusca subnitida, abdominis basi pedibusque pallidis, setis pallide 

 luridis, immaculatis, alis hyalinis, costa subjiavescente. (Exp. Alar. 7 lin. ; 

 long. corp.2i lin.; 1. set. 3 lin.) 



Eph. dubia. Steph. Catal. 305. No. 3381. 



