{From the Lonpon anp EpinsurcH PHILosoPHIcAt MaGazinr.] v.4. 
XXVI. Descriptions of some nondescript British Species of 
May-flies of Anglers. By Joun Curtis, Esq., F.L.S., &c.* 
S few insects are more remarkable in their ceconomy or 
* more employed for the amusement of men than the Ephe- 
mere and Phryganide, 1 hope the characters of some new 
genera and species may induce others to pay attention to these 
curious and interesting tribes of insects. 
The following descriptions are scarcely more than the es- 
sential characters: the numbers refer to Mr. Curtis’s Guide 
to an Arrangement of British Insects, in which a list of the 
species has been given. 
Order NEUROPTERA. Fam. EPHEMERID™. 
Gen. 734. Epuemera Linn. 
7. fusca Curt. 
_2x lines long: dull piceous, the space between the eyes and the base of the 
anterior legs ferruginous, the others ochreous ; filaments longer than the 
insect, pale lurid, dotted ; the articulations long: wings transparent, supe- 
rior with few transverse nervures and the longitudinal ones most distinct ; 
inferior very small, 
Gen. 735. Bartis Lea. 
A. The wings very much reticulated. 
2. dispar Curt. Brit. Ent. pl. 484. 
The Pseudimagot of this insect may be the E. venosa DeGeer. 
7. costalis Curt. 
5 lines long: slender, pale castaneous, sides of thorax, apex of abdomen 
and legs ochreous, the joints of tarsi fuscous at the articulations ; filaments 
very long, pale yellow, each joint with the apex black: superior wings 
with the costa brownish yellow. 
6. elegans Curt. 
41 lines: bright ochre, abdomen inclining to pale chestnut ; filaments whitish 
dotted with fuscous, tarsi with all the joints tipped with black :_ wings beau- 
tifully opalescent, stained very pale yellowish brown, the costa darker, espe- 
cially towards the apex. 
* Communicated by the Author. 
+ By Pseudimago I designate the fourth state of the Ephemerida. 
/8 Ob 
