EEV. A. E. EATON ON EECENT EPHEMEEID.E OR MAYFLIES. 91; 



present wovk was di'a\ya from a specimeu iu tlie latter collection ; but the earlier fi^ur 

 was prepared from a type specimen. 



Atalophlebia chilensis, u. sp. Plate X. 10 g ( 6 , legs and genitalia). 



Subimago {dried). — Wings extremely light smoky-grey, with pitch-black cross veinlets 

 bordered narrowly with light Cologne-earth grey, so arranged in the fore wino- as to 

 leave a blotch of the ground-colour extending from the costa to about the pobrachial (7) 

 nervure ; the longitudinal nervures pale for some distance from the wing-roots. Set* 

 light warm sepia-grey with pitch-black joinings. 



Imago {dried), d . — Thorax brown-ochveous above. Abdomen discoloured, collapsed, 

 and translucent ; segtnents 1-G narrowly pitch-black at the tips, with an oblique 

 dorsal stripe on each side from the terminal border, and a spot on each side at the base 

 fuscous. Setrt^ deficient. Wings vitreous, with light amber-yellow longitudinal nervures 

 and l^lack cross veinlets ; these are thickened somewhat in the marginal and submaririnal 

 areas of the fore wing ; the former area contains about 9 cross veinlets l^efore, and 

 16, straight and simple, beyond the bulla. Legs, in opaque view, rufo-luteous, with the 

 fore tibia luteous, the hinder til)ise towards their extremities and the tarsi paler or sub- 

 testaceous ; a black band in the middle and another (or a spot) at the tip of the femur, 

 also a spot at the tip of the tibia, pitch-black. Length of body, d 10, wiiig 12; seta;, d 

 subim. 12 mm. 



Snb. Chili (Reed, in jVPLach. Mus.). 



Atalophlebia tabularis, n. sp. Plate X. 16 h { 6 liead, parts of tarsi, forceps, and penis). 



Imago {in sjj/rifs), cf . — This species, well characterized by ihe lobes of the penis being, 

 as is represented in the figure, flat and obliquely pointed, so as to resemble in com- 

 bination the nil) of a ^len flattened, has a slight projection in the middle of the terminal 

 border of the forceps basis. Eyes clove-brown. Thorax piceous above, darker than the 

 abdomen. Sette whitish, with their alternate joinings dark. Femora banded with 

 black in the middle and at the knee. Wings vitreous ; the marginal area of the fore 

 wing contains about 10 cross veinlets before the bulla, and after that 6 rather weak, 

 followed in the pterostigmatic region by 13 well-defined mostly simple and slightly 

 curved, rarely (and then only very sparsely) connected together. Length of wing 9 mm. 



Salj. Cape of Good Hope, on Table Mountain. The only specimen obtained was found 

 in 1874, floating on the streamlet at the Platteklip. The nymph was vainly sought for 

 in the haunts of Telphusa ; the disuse of the net may have caused tlie failure. 



LEPTOPHLEBIA, Westw. 1840 (part); restricted, Etn. 1881. 



Illustrations. Adult (details) PI. XL 17 a-d (whole figures) ; consult Pictet, op. cit. 

 pi. 26 {Fot. Geerii & castanea). Nijmph PL XXXII. ; also Pictet, loc. cit. (1S13-5) 

 [who omits the tracheal branchia) of segment 1 of the abdomen]. 



Adult. — Hind wing in front unequally and very flatly arcuate, the curvature of the 

 arch being strong at both ends, and interrupted by a very shallow depression nearly in its 

 middle, immediately beyond its obtusely rounded summit ; the radius (8) constitutes, as 



