﻿638 Prof. Mario Bezzi's Report on a GoUection of 



39 (-10). Third antennal joint very elongate, without style, and yellow 



in its basal half . . . heterocera, sp. n., p. 649. 



40 (39). Third joint of the antennae entirely black, not so long, and 



often very short, always with distinct style. 



41 (42). Third joint of the antennae very short, ending in a short 



point, with the terminal style longer than the joint itself ; 

 large species of the appearance of a Villa 



vilhieformis, sp. n., p. 650. 



42 (41). Third joint longer than the style. 



43 (46). Legs and body black. 



44 (45). Hairs of the breast grey . . minois, Loew, p. 650. 



45 (44). Hairs of the breast black . hijpomelaena, sp. n., p. 651. 

 40 (43). Legs and body partly red. 



47 (48). Wings with a slight yellowish tint ; hairs on the pleurae 



yellowish-grey .... inornata, Loew, p. 651. 



48 (47). Wings pure hyaline ; hairs on the pleurae pure white 



spec, indet., p. 651. 



50. Exoprosojta umhrosa, Loew (1860). 



A single female from West Nyasa {Dr. H. S. Stannus), 

 which agrees well enough with the description. The third 

 posterior cell is a little shorter than the second, and at 

 the apex is only a little broader than the same cell. The 

 angle of the discal cell shows the stump in the third 

 posterior cell, as stated by Loew ; but there is a second 

 stump in the discal cell itself, beginning at the vein 

 dividing the second from the third posterior cell and 

 making a small supernumerary cell in the upper apical 

 corner of the discal cell. The spines of the female 

 genitalia are yellowish-red. 



51. Exoprosopa inermis, sp. nov. 



$ . Length of the body 12 mm., of the wings 10 mm. 



A species characterised by the angle of the discal cell and the 

 luteous colour of the head, abdomen and legs ; a striking character 

 distinguishing it from any other species is the apparent absence of 

 bristles on the thorax and scutellum, but I am not absolutely sure 

 of this, owiîig to the poor preservation of the specimen ; at any rate 

 I cannot find a trace of the points of insertion of the bristles, if these 

 are denuded. 



Face not projecting at all, rounded, convex, shining ; frons broad, 

 for a male, with sparse yellowish pubescence and short black hairs; 

 antennae yellow, the third joint a little darkened, of conical shape, 

 longer than the two basal joints together, with the terminal style as 

 long as one-third of the joint itself. Proboscis black, not prominent. 



