EEV. A. E. EATON ON EECENT EPHEMEEID^ OE MAYFLIES. 85 



of the type specimen, the subject of the above description, may have been modified by 

 ravages of Anthrenus (Hag. Mus.). 



Atalophlebia annulata, Hag. Plate X. 16 « ( d , wings, legs, and genitalia). 



Potamanthus amiulatus, ! Hag., Verb, zool.-bot. Gesells. Wien, viii. 176 (1858). 



Leptophlebia annulata, ! Etii., Trans. Ent. Soc. Londou (1871), 82, pi. iv. 23-23 h ; Hag. & Etn., op. cit. 

 (1873), 393-4. 



Subimago {dried). — Wings brownish grey, translucent ; neuration dull black, excepting 

 that some of the longitudinal nervures are lighter in colour towards the wing-roots. 



Imago [dried), 6 . — Thorax and legs pitch-brown, the ungues and at least the last 

 tarsal joint subtestaceous. Dorsum of abdomen from its extremity to almost the base of 

 the 7th segment pitch-brown ; segments 2-G each banded with piccous and very pale 

 translucent dull brownish yellow, the dark terminal band dilated triangularly in the 

 middle, and the pale band at the sides ; there is also a very narrow pale band at the base 

 of the seventh segment ; venter pitch-brown at the joinings and throughout the last 

 three segments, otherwise concolorous with the pale dorsal bands. Forceps pitch-brown ; 

 setae warm sepia-brown or fuliginose. Wings vitreous, with pitch-black neuration ; the 

 fore wings tinged slightly with piceous near the wing-roots and the great cross vein, and 

 for a short distance in the submarginal area ; the remainder of this last, and the ptero- 

 stigmatic space, is faintly tinted with fuscous, and there are about IG simple gently 

 curved cross veinlets in this space. Length of body, S 9-11 ; wing 12'5 ; setae 35 & 

 37 mm. 



Sab. E-ainbodde, Ceylon, at upwards of 4000 feet altitude (Hagen Mus., & Thwaites 

 in M'Lach. Mus. ; also Brit. Mus.). 



Atalophlebia Taprobanes, Walk. Plate X. 16 b (penis). 



' \Baetis Taprobanes, ! Walk., List of Neuropt. Ins. in Brit. Mus. part iii. 567 (1853) ; Hag., Verb, zool.- 

 bot. Gesells. Wieu, viii. -176 (1858). 



Leplophkbla Taprobams, ! Etn., Trans. Ent. Soc. Londou (1871), 82, pi. iv. 22, 22 a [details] ; Hag. & 

 Etn., op. cit. (1873), 393. 



Imago {dried), 6 . — Thorax pitch-black ; abdomen scarcely lighter, excepting in the 

 translucent whitish bases of segments 2-6. Setae burnt-umber brown. Fore legs 

 black ; hinder legs dark piceous. Wings vitreous, very faintly tinted with very light 

 bistre-grey, with a streak at the great cross vein, a spot at the wing-roots, and with the 

 marginal and submarginal areas of the fore wing beyond the middle burnt-umber brown ; 

 neuration pitch-black. The marginal area of the fore wing contains about 8 cross 

 veinlets before the bulla, and 18 straight and simple beyond it. Length of body, d 12 ; 

 setae 30 (or more) mm. 



Hub. Ceylon (Brit. Mus.). 



Atalophlebia femoralis, Hag. 



Potamanthus femoraUs,\ Hag., Verb, zool.-bot. Gesells. Wien, viii. 476 (1858). 



Leptophlebia femoralis, Etn., Trans. Ent. Soc. London (1871), 83; Hag. & Etn., op. cit. (1873), 394. 



Subimago {dried). — Wings transparent, pale sepia-grey, with fuscous neuration. Setae 

 brown. 



SECOND SERIES. — ZOOLOGY, VOL. lU. 12 



