KEY. A. E. EATON ON EECENT EPHEMEEID^ OE MAYFLIES. 87 



each side descending obliquely from the hinder border of the segment almost to its base, 

 dilated very broadly in front on its lower side so as to resemble somewhat a quadrangular 

 blotch squarely excised at its lower distal angle ; segment 9 pitch-black excepting at its 

 rufo-luteous distal margin. Forceps rufo-lutcscent at the base, becoming rufo-piceous 

 distally. Setse intense warm sepia-brown. Wings vitreous, sometimes faintly tinted 

 with lurid in the disk ; their neuration pitch-black ; the marginal and sul)mar"-inal 

 areas of the fore wing tinged with burnt-umber brown, and more deeply so in the ptero- 

 stigmatic space, where the cross veinlets (mostly simple) are crowded and oblique ; of 

 these there are about 8 before and 23 beyond the liulla in the marginal area. Fore le"-s 

 pitch-brown ; hinder legs rufo-luteous ; all with two black bands on the femur. Ventral 

 lobe of the penultimate segment of the ? excised. Length of body, 6 9-10 ; win"-, 

 d 2 11 ; setoe, d 32 mm. 

 Sab. Sydney, and perhaps Melbourne (Brit. Mus.). 



Atalophlebia furcifera, Etn. 



Leptop/ilebia furcifera, !Etu., Trans. Ent. Soc. London (1871), 79, pi. iv. lG-16 6 [details]. 



Imago [dried), 6 . — Mesothorax brownish luteous above ; metatergum deep sangui- 

 neous-black. Abdomen sanguineous Ijlack, with a median longitudinal line, the spiracular 

 lines, and triangular spots, one on each side of the dorsum, adjacent to the hinder border 

 in segments 2-6, of a lighter colour. Setse cretaceous, with the alternate joinings black. 

 Wings vitreous, iridescent, with piceous nervures ; the pterostigmatic region of the fore 

 wingrufo-fuscescent, with numerous simple and nearly straight cross veinlets ; the other 

 cross veinlets in the front of the fore wing, as far back as the radius and first of the 

 sectors, bordered Avith rufo-fuscous ; the bullae of the subcosta and radius, and the point 

 of furcation of the prtebrachial (G), are surrounded each by a small warm-sepia nebula. 

 Fore legs deficient ; hinder legs testaceous, with two femoral bands, and the base of the 

 trochanter fuscous. Length of body and wing, d 11 ; setne 13 and 16 mm. 



Sab. Melbourne (M^Coy). The species was forwarded to Mr. F. Walker, who referred 

 it to me ; the type may therefore be in the Melbourne Museum. The name has referen j 

 to the form of the penis. 



Atalophlebia inconspictja, Etn. 



Leptophlebia inconspicua, ! Etu., Trans. Ent. Soc. London (1871), 79, pi. iv. 17-17 b [details]. 



Imago (dried), <J . — Abdomen piceous posteriorly, paler in the intermediate segments, 

 with small, oval, yellowish dorsal spots at the sides. Sette fuscous, with darker joinings. 

 Wings faintly lutescent, with piceous neuration : the pterostigmatic portion of the fore 

 wing contains a few simple, straight, oblique cross veinlets. Legs piceous ; sometimes 

 the fore tarsi and the hinder legs are lighter. Lobes of the penis broadly flattened out 

 and obtuse. Length of d , body 5-6 ; wing 6-7 mm. 



Hab. Adelaide (Ilope Mus., Oxford). 



12* 



