Ephemeridue/rom Tropical Africa. 277 



to it, a short streak on each side of the nervous track ; also 

 its apical border and a spot at the roots of the genitalia 

 greyish or fuscescent. Forceps : limbs elongate, somewhat 

 darkened towards their extremities, and composed seemingly 

 of only a single minute joint terminating the long basal joint. 

 Wings transparent, vitreous, with light green and red-purple 

 iridescence ; fore wing in the costal and subcostal areas 

 tinged with light yellow-amber ; neuration black, excepting 

 the bases of the veins posterior to the radius and the shortest 

 venules of the anal group, and in the hind wing a large 

 proportion of the longitudinal veins and a few of the cross- 

 veinlets, which are whitish or not coloured. Fore legs 

 lutescent ; hinder legs flavescent or light yellow-amber, with 

 the femora towards the tips and the tarsi tinged with traces 

 of the former colour. Joints of the fore tarsus shortening 

 from the longest, second subequal to third, fourth, fifth, first; 

 hinder tarsi fifth, third, fourth (first indistinct). Setae at the 

 roots light burnt-umber brown, their joinings darker and the 

 bases of the joints faintly tinged with the same, becoming 

 gradually lighter ; and then, in nearly their terminal halves, 

 the outer tails become piceous or bistre-brown. 



Length of body about 25, fore wing 22, outer seta? 65 mm. ; 

 median seta as long as the first two joints combined. 



Hab. Uganda Protectorate, Mpanga Forest, 4800 ft. 

 (13-23 November, 1911), & A. Neave. 



Three small fragmentary flies can be placed in the group 

 of Ecdyurus : — 



A single ? subim., captured on a tent-fly 300 yards from 

 the river Mara-Mara, Liembwa Dist., Nyanza Prov., Brit. E. 

 Africa (12 Dec, 1911), C M. Dobbs, no. 52.— Hind tarsus : 

 first joint longer than second and second longer than third 

 joint. Fore tarsus : first joint equal in length to second and 

 longer than third. Hind wings well developed. Femora 

 each with a short, acute, longitudinal, black, recurrent apical 

 streak near the lower edge, but no median dark band. 



Affinities with Epeorus, Etn. 



A single $ imago from N.E. Rhodesia, Niamadzi R., near 

 Nawalia, at 2000 ft. alt. (17-22 Aug., 1910), 8. A. JS'eave ; 

 1911, 177, British Museum. — Hind tarsus (only one re- 

 maining) in course of reproduction, and therefore abnormal; 

 fore legs beyond the trochanter lost. — SSedis incerti. 



A single ? imago, labelled N. Nigeria, Zungeru (Nor. 

 Ann. & Mag. X. Hist. Ser. 8. Vol. xii. 20 



