1G8 Df- C. P. Alexander on 



ratlier narrowly but conspicuously dark brownish black ; 

 tibiaj pale brownish yellow, the extreme base indistinctly 

 darkened ; tarsi concolorous ; posterior tibi;3e with three or 

 four rather powerful bhick bristles just before the tip. 

 Wings pale greyish subhyaline; wing-veins and apex 

 suffused with brown ; cells C, Sc, and most of 2nd B^ more 

 greyish yellow ; the brown seams are most conspicuous along 

 Rs, the cord, Cu and its branches, and all the veins beyond 

 the cord with the exception of the distal section of i^2+3 \ 

 the darkened wing-tip includes all of cell R.2, the ends of 

 2nd Ri and 2nd M^, the distal three-fifths of Rz, and the 

 distal half of R^ ; stigma oval, darker brown ; veins dark 

 brown. Venation : Rs long, gently arcuated at origin, 

 about one-half longer than the first section of i?2+3 ; fif^t 

 section of iRs+s a little longer than the second section ; 

 ])etiole of cell R^, short, about equal to the basal deflection 

 of i^4+6 ; fusion of Ci and \st A punctiform. 



Abdominal tergites black ; sternites conspicuously bi- 

 colorous, the basal three-fifths of the intermediate segments 

 y How, the caudal margins conspicuously blackened ; a black 

 subtermiual ring; ovipositor bright chestnut horn-colour. 



Hab. Cameroun. 



Holotype, ? , Lolodorf, January 15, 1919 (J. A. Reis). 



At first sight, Trentepohlia nox bears a considerable 

 resemblance to T. nigricolor, sp. n., but is readily told by 

 the coloration of the legs, wings, and abdomen, and the 

 venational details, especially the very long sector and the 

 short petiole of cell R^. 



Trentepohlia {Trentepohlia) hi/alina, sp. n. 



General coloration yellowish ; posterior tibise with three 

 powerful bristles before tip ; wings hyaline or nearly so. 



Female. — Length 6*6 mm. ; wing 5*2 mm. 



Rostrum and palpi yellow. Antennas with the scapal 

 segments yellow ; flagellum broken. Head pale yellow. 



Pronotum with long erect setae. Mesonotum rather 

 bright yellowish ; humeral region and prsescutal interspaces 

 with erect setae. Pleura yellow ; mesopleura setiferous. 

 Legs pale yellowish testaceous throughout ; legs all detached, 

 but what from analogous s|)ecies would appear to be the 

 posterior legs are armed as follows : femora at base with a 

 series of about fifteen spinous bristles that are subequally 

 spaced ; tibiae before tips with three very long and powerful 

 black bristles that are about equidistant from one another 



