Bombyliidae. 99 



Antennæ three-jointed, the lirst joint short, cylindrical, the second 

 shorter, globular, the third bulb-hke, tapering to a long, narrow style 

 with a small, bristly part at theapex; the styliform part is not divided; 

 whether the small, bristly part at the apex is a separate joint or not, 

 it is difficult to decide, there is at all 

 events no distinct articulation to be seen, 

 not even with a high magnifying power, 

 yet it is possible, that the bristly part 

 should be considered as a distinct joint, 

 or at all events as answering to a joint; 

 in favour of its being a separate joint it 

 is to be remarked, that this part is easily 

 broken off and is therefore not rarely Fig. 35. Antenna of E. morio. 

 wanting. Epistoma short, the mouth x 45. 



aperture large, oblong, reaching up towards the antennæ and looking 

 downwards and slightly forwards. There is a well developed oral 

 cone, on the front side of which lies the weakly chitinised clypeus 

 stretching from the epistoma towards the labrum; it is chiefly repre- 

 sented by two chitinous lists; on the posterior side of the oral cone 

 lie the stipites of the maxillæ. Proboscis about half as long as the 

 head is high; labrum pointed triangular, nearly as long as labium; 

 the maxillæ have a thin, pointed lacinia, about as long as labrum; 

 the maxillary palpi are one-jointed, long, nearly thread-like, beset 

 with hairs; hypopharynx thin, long-pointed, somewhat longer than 

 labrum; by judging the length of the mouth parts in relation to the 

 length of the labium it is to be remarked that labrum and maxillæ are 

 inserted somewhat basally on the cone because there is a relatively 

 long connecting membrane between the place of insertion of these parts 

 and the insertion of the labium at the end of the cone. The labium 

 has the basal part somewhat longer than the labella, these latter are 

 relatively short and broad, and form a disciform plate when spread 

 out. In rest the proboscis lies withdrawn quite as in Argyramoeha. 

 Thorax nearly quadrate, narrower at the front end; prothorax as in 

 Argyramoeha^ and there are the same hair-fringes at the posterior 

 margin of the head and at the front end of mesotliorax. Notopleural 

 and postalar bristles present, and likewise weak scutellar marginal 

 bristles; metapleura have a vertical tuft of hairs. Abdomen some- 

 what flat, consisting of seven not transformed segments. The male 

 genitalia are unsymmetrical, turned to one side; they consist of an 

 eighth, quite hidden segment at the apex of which there is above a 

 somewhat triangular piece, with a furrow in the middle line, and 

 below a piece which is bent upwards at the sides and has the hind 



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