38 NEUROPTERA OF NORTH AMERICA. 



broader in front, quadrangular, sides a little convex, anterior an- 

 gles somewhat rounded ; disk with three straight elevated lines, 

 the outer ones shorter ; feet and abdomen ferruginous ; wings 

 subhyaline, a little ciliated, veins ferruginous. 



Length to tip of wings 8 millira. Alar expanse 14 millim. 



Hah. Nova Scotia (Redman). 



Fam. Y. EPHEMERINA. 



Body elongated, conical; prothorax of moderate size; an- 

 tennee small, subulate; parts of the mouth rudimentary, con- 

 nate; caudal seta3 two or three, long, slender; wings unequal, 

 posterior smaller, or sometimes absent; transverse veins few 

 or numerous ; tarsi four- or five-articulated. 



EPHEMERA Linn. 

 Three long and equal caudal setse ; wings four, transverse veins 

 very numerous ; eyes remote, in the males simple. • 



1. E. decora! 



Ephemera decora Walk.! Catal. 537, 7. Male Imago. 



^ Imago. Rather luteous, apex of the antennae black ; the 

 head, thorax, and abdomen each side with a fuscous fascia, that of 

 the abdomen broader, exteriorly serrated ; beneath yellowish, ab- 

 • domen bilineate ; anterior feet very long, luteous, the apex of the 

 femora, base and apex of the tibiae and apex of the tarsal articu- 

 lations fuscous ; posterior feet (partly destroyed) luteous ; setse 

 luteous, long, the articulations fuscous; wings yellowish-hyaline, 

 veins fuscous, partly margined with fuscous, anterior ones with 

 some discoidal fuscous spots. Female paler, feet shorter, wings 

 more hyaline. 



Length of body 11 millim. Alar expanse 26 millim. Setse 25 

 millim. 



Hah. New Haven; Canada (Barnston); Chicago (Osten Sacken). 



Does E. guttulata Pictet. Ephem. 135, 4, tab. iv, fig. 4, belong 

 here ? I have never seen it, and the locality is unknown. The 

 figure and description agree, but yet, the wings are more spotted. 



2. E. simulans. 



Ephemera simulans Walk.! Catal. 536, 5. 



Piceous ; feet fulvous, anterior ones obscurer ; setse pale pice- 



