34 PROF. M. BEZZI. 



the bristles are black and inserted on small black dots ; scp. not distinct ; 1 mpl. ; 

 st. stout ; pt. yellow ; apical scutellar bristles half as long as the basal ones and 

 decussate. Mesophragrna grey ; halteres yellow ; abdomen black, but densely 

 grey-dusted, with yellow pubescence and with black bristles at end ; on segments 

 2-4 there are 2 broad median brown spots, which are however not very distinct ; 

 venter pale greyish. The short and broad, flattened and obtuse ovipositor is shining 

 black. Legs rather stout, entirely reddish yellow ; front femora with 2-3 yellowish 

 bristles beneath ; hind tibiae with ill-developed row ; the single spur of the middle 

 tibiae is black. Wings rather narrow and elongate, with short but distinct costal 

 bristle ; 3rd longitudinal vein bare ; 3rd and 4th veins perfectly parallel throughout 

 the whole portion after the small cross-vein ; hind cross-vein rather perpendicular, 

 as long as its distance from the small cross- vein ; lower angle of the anal cell 

 distinctly produced. Veins yellow, only the two cross-veins, and some portions of 

 the longitudinal veins corresponding to the dark spots, are blackish. The reticulation 

 is very faint and similar to that of Euribia lauta, Loew (veliformis, Becker), but 

 differently disposed ; the stigma is entirely yellow, with a small black dot at end. 

 The reticulation is of the type of that of elongatula ; only the dark part forming the 

 3 hyaline spots of the marginal cell is a little more marked ; the hyaline spots of the 

 rest of the wing are perfectly rounded and disposed in two longitudinal rows in the 

 discoidal and posterior cells. 



Type $, a single specimen from British E. Africa, Embu, 12.xii.1913 

 (67. St. J. Orde-Browne). 



XXXI. Euribia, Meigen (1800). 



With the removal of the species with broad wings and with black-spotted head 

 to form Eutretosoma ; and of those with predominating black in the wing pattern 

 to form Spathulina, Euaresta and Pliomelaena ; and of those with very elongate 

 proboscis and with depressed head to form Ensina ; and of those with prominent 

 frons to form Camaromyia ; and of those with buccate head and with very broad 

 frons to form Campiglossa ; and of those with the fuscous pattern of the wings 

 limited to the fore half to form Acardhiopliilus ; and of those with star-like wing 

 pattern to form Trypanea, there remain in the present genus only forms with 

 decidedly reticulate wing pattern, which covers about the whole of the wings, and is 

 not or very slightly radiating at the apes or at the hind border, with non-depressed 

 head, with flattened and not very broad frons, and with short or elongate proboscis ; 

 but in this last case, the apical part of the proboscis is always shorter than the lower 

 border of the head. 



Thus limited, we can distinguish in the genus the following Ethiopian species : — 

 1(4). Third antennal joint with a sharp point at its upper end ; body with yellow 

 bristles and devoid of black stripes or spots on thorax or abdomen ; 

 wings with a colourless stigma and a deep black spot in the middle of the 

 disc. 

 2(3). Wing pattern fainter and more diffuse ; abdomen mainly pale yellow ; 

 ovipositor longer than the abdomen . . . . . . perpallida, sp. nov. 



3(2). Wing pattern more pronounced, and denser ; abdomen entirely black ; 

 ovipositor much shorter than the abdomen . . . . discipulchra, sp. n. 



