REV. A. E. EATON ON EECENT EPHEMEEID.E OE MATELIES. 47 



Wings transparent white, with opaque neuration ; the costa, suhcosta, and radius of the 

 fore wing, up to the commencement of the pterostigmatic space, tinged with light pur- 

 plish or violet-grey ; a faint tint of the same colour is perceptihle in the contiguous 

 areas. Length of body 10, wing 11 mm. 



Sah. The Nile, Egypt (Pictet & M^Lachlan, Mus.). The only example in this last 

 collection was given to me by M . Pictet. 



POLYMITAECYS INDICTJ.S, Pict. 



PaUngenia indlca, Pict., Hist. Nat. Nevropt. ii. Eplicm. 151, pi. xiii. 4 (1813-5) ; Walk., List of Neu- 

 ropt. Ins. iuBrit. Mus. part iii. 549 (1853). 



Pohjmitarcys indicus, Etn., Traus. Ent. Soc. London (1871), Gl. 



Subimciffo (dried), ? . — Body in great measure ochreous, with a fuscous spot in the midst 

 of the pronotum, three longitudinal fuscous lines (coincident with the sutures ?) on the 

 mesonotum,— one in the middle, the others directed towards the wing-roots,— and a 

 broad violet dorsal stripe along the abdomen. Setae ochraceous. Eore legs ocliraceous, 

 the tibia and a streak on the femur blackish ; hinder legs white. Wing-neuralion white; 

 the fore wing tinted slightly witli violet along the costa. Length of body 12, exp. of 

 wings 30 mm. (After Pictet.) 



Tlah. East Indies (Vienna Mus.). 



POLTMITAECYS ALBUS, Say. 



^^Aorow Ze«</i:o?«, Will., Trans. Am. Soc. Philad.v. 71-3(1802); Etn., Trans. Ent. Soc. London (1871), 124. 



tBaetisalba, Say, West. Quart. Rcpt. ii. 305 (1823) ; Le Conte, Complete Writings of T. Say, i. 204 

 (1859) ; Hag., Proc. Ent. Soc. Philad. ii. 170 (18G3) ; Walsh, op. cit. ii. 193, note 12 [in Cloe aJ (1863). 

 — B. albus, Etn., Trans. Ent. Soc. London (1871), 124; Hag., op. cit. (1873), 390. 



? P«///;_ye«ia/j?<e//a, Pict., Hist. Nat. Nevropt. ii. Epli(5m. 145, pi. xi. 4, 5 (181.3-5); Walk., List of 

 Neuropt. Lis. in Brit. Mus. part iii. 548 (1853); Hag., Smitlison. Misccll. Coll. (18G1), Synop. Neuropt. 

 N. Am. 40.— P. alba, id., op. cit. 40 (18G1) ; id., Trans. Ent. Soc. Loudon (1873), 391. 



? Campsurus puella, Etn., op. cit. (1871), 58. 



/Miffy/o.— Milk-white ; pronotum yellowish white ; fore legs greyish fuscous ; hinder 

 legs wliite ; wings whitish, the fore wing greyish along the costa. Length of body 11- 

 12 ; exj). of wing 22 mm. 



Hab. Passaick river, Belville, New Jersey ( Williamson) ; Winnipeg river {Say) ; North 

 Red River and N. York {Ilagen). 



Second Series of Groiip I. of the Genera. 



Adult. — Legs all functional, the hinder pairs rather short, the fore legs the longest 

 pair in the 6 , and in the ? at least as long as the hind legs, but usually a little longer 

 than these ; femora shorter tlian the tibiae ; ungues efficient, unequal, those of the 

 hinder tarsi mutually dissimilar. Valves of tlie thoracic spiracles straiglit-edged, 

 usually closed in dried specimens. Proximal joint of 6 forceps-limbs short, the second 

 joint the longest. Subimago quiescent during many hours ; the fore legs smooth ; the 

 last moult complete. Ni/mph. — Palpus of first maxilla long and slender, curved and 

 3-jointed. The 2-jointed palpus of second maxilla, dilated terminally and geniculated. 



