S^raiisactious i^etu ^ralauti Institute, Vol. xxxi. Pi, xvill. 



5.— Atalophlebia nodularis (adult)? 



5. a Head, ilorsal view, x 10 



5.b, e. d. 1st, 2ud, aud 3rd legs x 10 



5.e Forewini;, x 7 



5.f Hind wing, x 14 



5.g Hiud wins;, x 45 



EPHEMERID/E. 



(LillieJ 



