90 EEV. A. E. EATON ON EECENT EPHEMERID.^ OR MAYFLIES. 



marginal and submarginal areas ; in the submarginal area and the next behind it, in both 

 of the places that are clouded in the subimago, three cross veinlets are nearly approxi- 

 mated to one in a conspicuous manner, and are very faintly clouded. Eore tibia and 

 tarsus, in opaque view, dull luteo-rufescent, the femur obscure rufo-piceous, with a black 

 band in the middle and another at the knee, a black spot at the extremity of the tibia, and 

 the joinings of the tarsus narrowly black ; hinder legs, in opaque view, redder, with only 

 the band in the middle of the femur : in transmitted light the prevailing colour of the 

 legs is brownish amber. Length of body, d 9, wing 10-12, setse 16 mm. 



Hah. Christchurch, New Zealand (Pereday in M^'Lach. Mus.). The present photo- 

 lithograph lacks definition, and is inferior to the figure published in 1871, copied from 

 the same original di*awing. 



Atalophlebia scita, Walk. Plate X. 16/ (penis). 



XBaetis scita, ! Walk., List of Neuropt. lus. in Brit. Mus. part iii. 570. 



Leptophlebia scita, ! Etn., Traus. Eut. Soc. London (1871), 81, pi. iv. 21, 21 a [details]. 



Suhimago {dried). — Wings dark warm sepia-grey, with black neuration ; the cross 

 veinlets of the fore wing are edged with darker grey ; their scarcity behind the subeosta 

 in the middle of the front of the disk gives rise to the appearance of a pale spot, whilst 

 the mutual approximation of three or four about the bulla and again in the midst of the 

 pterostigmatic space produces frequently two dark spots. Setai warm sepia-grey with 

 black joinings. 



Imago {dried), 6 . — Thorax light reddish or pitch-brown. Abdomen dark bistre-brown, 

 the segments above broadly edged distally with black, and segments 3-0 above marked, 

 close to the base, each with a pair of translucent yellowish triangular spots in the midst. 

 Forceps luteous. Setaj dirty white, or light sepia-grey, annulated at the base of every 

 alternate joint with black, the anuulations gradually increasing in breadth, until, in the 

 distal parts of the seta, each annulation occupies almost the whole of a joint. Fore 

 femur, in opaque view, translucent raw umber-brown, with a distinct black band in the 

 middle, and a fainter one at the tip ; tibia and tarsus light rufo-luteous, with the tip of 

 the former and joint i of the latter black : in transmitted light the femur becomes chiefly 

 brownish amber, and the rest of the leg light yellowish-amber. Hinder legs amber- 

 yellow with a black band in the middle of the femur, and with the terminal borders 

 of the tibia and tarsal joints very narrowly edged with black. Wings vitreous, with 

 pitch-black neuration ; the fore wing with a spot at the base of the costa, and with the 

 narrow bordering of the cross veinlets in the marginal and submarginal areas piceous; 

 also with a less distinct spot in the marginal area at the bulla, and another in the ptero- 

 stigmatic space, light raw-umber or light bistre-brown. In the marginal area are 7-8 

 cross veinlets ])efore the bulla and 11-13 beyond it, mostly simple and free. 



2 very similar. The cross veinlets in the marginal area of the fore wing rather more 

 numerous than in the male (but of similar character), \iz. 9 before, 18 beyond the bulla. 

 Length of body, d 6, ? 9 ; wing, 6 7-8, ? 11 mm. 



Hub. Kew Zealand (Brit. Mus. & M^Lach. Mus.). The figure of the penis in the 



