- 14 - 



dark brown; pale brown seams on r-m and the deflection of Ri+b 

 and along the basai deflection of Cu 1 ; veins dark brown, R2 pale. 

 Venation : Rt and R2+3 nearly equal in length and not in direct align- 

 ment; section of vein M1+2 between r-m and m strongly arcuated; 

 pétiole of cell Mi, a little longer than m; fusion of M3 and Cm mode- 

 rate, a little shorter than the basai deflecton of M1+2. 



Abdomen with the tergites dark brown, the subterminal segments 

 darkest; sternites and hypopygium more yellowish. Maie hypopy- 

 gium with the sclerites fused into a continuous ring as in this (velu- 

 tina) group of species. Ninth tergite produced into a broad médian 

 lobe whose apex is evenly rounded and densely set with short black 

 spinules; dorsal surface of the tergite provided with stiff bristles that 

 are lacking in the médian basai portion, longest along the posterior 

 and latéral margins. Pleural suture indicated beneath; outer pleural 

 appendage elongate, rather slender, tapering to the subacute apex, 

 the surface with numerous, erect, black seta;; inner pleural appendage 

 complex, the « heel » produced caudad into a pale, fleshy lobe that 

 somewhat resembles the pleural appendage; inner blade flattened, 

 split into two arms, the outer arm flattened into a compressed, circular 

 disk that bears two acute chitinized points on its face; the inner 

 arm is slender, dilated into a head at the end, the posterior inner 

 face of the neck with dense, appressed bristles that are directed basad. 

 Ninth sternite very extensive, with a comparatively shallow, V- 

 shaped médian notch, the remaining surface transversely wrinkled 

 medially. Eighth sternite unarmed. 



o* , Tero Forest, Southeastern Buddu, Uganda, altitude 3800 feet, 

 September 26 -30, 191 1 (S. A, Neave). 



Allotype in the collection of the British Muséum of Natural His- 

 tory, presented by the Impérial Bureau of Entomology. 



GENUS NEPHROTOMA MEIGEN. 



NOPHROTOMA RUWENZORIANA Alexander. 



1920 Nephrotoma ruwenzoriana Alexander; Bull. Amer. Mus. Nat. 

 Hist., 43 : 20, pi. 4, fig. 6. 



The species was described from a unique female, taken on Ruwen- 

 zori, by Dr. Joseph Bequaert. Rather numerous spécimens are 



