Ephemeridaa/row Tropical Africa. 275 



visible in parts not flattened out near the subcosta of the 

 ore W ing- a„d less strongly in a diffused cloud of moderate 

 width extending from the tip along the outer margin of 

 the hind wing j cross-ve.nlets also bordered narrowly with 

 the same faint tint. Neuration piceous. In the fore win. the 

 usual spots are almost obsolete, being represented only by a 

 faint nebulosity just discernible in the immediate vicinity of 

 the bifurcation ot the median vein, and another even less 

 visible at the near end of the long intercalar vein included in 

 he cubital fork; in the hind wing no spot can be seen. In 

 he figure both of the wings are incomplete, and cross-veinlets 

 m the costal area (roughly sketched) are omitted. Cabinet- 

 pests have left too little remaining of body, Ws, and set* 

 tor description, and the <J genital ia°are ill displayed 



Approximate length of wing, <? im. 13, ? subim. 15 mm. 



1 o V- S SP M ieS T i ; efe r rred four defective specimens :— 

 1 ? Bubim., Nv^asaland, JDomira Bay, W. shore of Lake 

 Nyasa (18-21 Oct., 1910), S. A. Neave ; 2 <J in U»a„ da 

 Entebbe (11-12 Aug., 1911), G. C. Goudey, 191™, Jo"£SS 

 Museum; and 1 J 8U bim, Uganda Prot., Tero Forest 

 S.E. Buddu, 3800 ft. (26-30 Sept., 1911), S. A AW 

 Entomological Research Committee. ' ' 



Pentagenia, Walsh (18G3). 

 A genus known hitherto from N. America only. 



Pentagenia sp. ? 

 Neuration of wings, incomplete. 



w 



? Pentagenia sp. 



«ubimago ? (dried) .-Wings dull, semitransparent, smoky 

 utish, with black neuration; the terminal margin outlined 



Sub 



