98 EEV. A. E. EATON ON EECENT EPIIEMEKID.E OE MAT^LIES. 



Hab. New Hampshire, on Mount Wasliington (M''Lach. Mus.), and in May at Amherst 

 (Mus. Comp. Zool. Cambridge, Mass.). Also West Parms, N. Y. ; AVorcester, Mass. ; and 

 North Carolina (in the same collections). Two examples are ticketed Washington Ter- 

 ritory in M''Lach. Mus. 



Leptophlebia memorialis (renamed). 



Leptophlebia\\ pallipes,\ Hag., Ann. Rep. U.S. Geolog. and Geograph. Survey of the TeiT. 1873, 

 part iii. Zool. 582 (1875). 



Imago {dried), S . — Body pitch-brown ; the head rather brighter and redder or chestnut- 

 brown, but pitch-black at the orbits of the ocelli, in two depressions behind them on the 

 vertex, and in the middle of the occipital crest ; thorax rather darker at the sides ; 

 abdomen growing darker above in segs. 7-10, the first segment broadly and the others 

 narrowly bordered with pitch-black at the tips above ; the spiracular line dark, the 

 ventral lobe of the 9th segment pale, bifid, with elliptical segments. Wings vitreous, 

 with almost colourless neuration ; the longitudinal uervures, distally, tinged faintly with 

 very pale brownish ; marginal area of the foi'e wing Avitli about 8 evanescent cross 

 veinlets before the nodal point, and about 17 (only well defined in the ptcrostigmatic 

 space) be;iond it, mostly simple and almost straight. Legs pale yellovvish Avhite, the 

 femora faintly tinged with brownish distally, the fore coxa pale, the hinder coxae pitch, 

 brown, the first three tarsal joints faintly brown-tinted. Length of body G, wing 

 7 mm. 



Hab. Truckee, Nevada, in the Sierra Nevada (G. R. Crotch, in Mus. Comp. Zool. 

 Cambridge, Mass.). AVith a low power, the legs in some lights seem uniformly pale 

 brownish white. The name pall'ipes having been preoccupied by Walker in the unre- 

 stricted genvis Leptophlebia, I have assigned another to this species, which has reference 

 to its original captor, whose untimely death was primarily due to exposure in the course 

 of the expedition when the insect was obtained. 



Leptophlebia debilis, Walk. 



XBaetis ,dtbilis,\ Walk., List of Neui'opt. Ins. in Brit. Mus. part iii. 5G9 (1853); Hag., Smithson. 

 Miscell. Coll. (1861), Synop. Neuropt. N. Am. 46. 



The description of this " museum species " was based upon a single ? imago, whose 

 generical afldnities were misunderstood by Mr. Walker. In 1871 I cited it as synony- 

 mous with XPalingenia concinna, XP.palUpes, and probably with %Ephemera hebes of the 

 same author {i.e. Blasturus cupidus. Say) ; but having re-examined the type specimen, I 

 now believe it to be a Leptophlebia, not yet definitely described. 



Leptophlebia gregalis, sp. nov. 



Subimago {dried). — Eore wings very light brownish grey, with the stronger nervures 

 in opaque view dull light rufo-piceous ; in some other positions their colour is that of the 

 membrane. Hind wings whitish grey, with yellowish white neuration. Seta> light 

 brownish grey. Legs rather paler than in the imago. 



Imago {dried). — j . Body reddish pitch-brown ; thorax sometimes nearly pitch-black 



