238 Orthorrhapha brachycera. 



16. Dolicliocepliala Macq. 



Small, delicate, dark coloured species. Head elongated down- 

 wards, pointed towards the mouth aperture and somewhat pyriform; 

 its longest axis forms an angle with the longitudinal axis of the body; 

 the mouth aperture is found at its point; it has thus quite another 

 shape than the elongated, somewhat tlattened head in Hemerodromia 

 with the mouth aperture on the lower side, but it resembles the 

 head in some species of Clinocera. Occiput slightly arched, with some 

 bristles above. Eyes somewhat large, elongated downwards, widely 

 separated in both sexes, and with the facets of equal size; they are 

 densely short hairy. The incisure in the inner eye-margin distinct. 

 There are three ocelli lying on an ocellar tubercle somewhat for- 

 wards, and there is a pair of ocellar bristles. The antennæ are in- 



Fig. 104. Antenna of D. irrorata. X 85. 



serted near to each other a little above the middle; they are short, 

 consisting of five joints; the, two basal joints are short, the third a 

 little longer, somewhat roundish or disciform, and compressed; it has 

 at the apex, somewhat above, a long, downwards curved, two-jointed 

 arista, the basal joint of which is very short, ring-like. Epistoma is 

 somewhat narrow; clypeus is, so far as I could observe, not really 

 separated from the epistoma, but forms the lower part of this and is 

 somewhat keel-shaped. The small jowls descend a little below the 

 eyes, but they are not in connection with the clypeus, as the eyes 

 stretch far down. Proboscis is short and somewhat thick; the mouth 

 parts much resemble those in Clinocera; labrum is short, broad and 

 arched, and it is beset with strong tubercle-shaped teeth; hypopha- 

 rynx is about as long as the proboscis, of the same shape as in Cli- 

 nocera, broad at the base and with a long pointed median process, 

 and two short, rounded, lobe-shaped lateral processes; I could fmd 

 no maxillæ but there are one-jointed maxillary palpi, which are cur- 

 ved upwards, resting on the labrum. Labium is short, the labella 

 somewhat large and broad, fully as long as the basal part, and cleft 

 to their base, Thorax is elongated rectangular, a little narrowed in 

 front, somewhat arched above; prothorax is small and likewise meta- 

 thorax. There are long, uniserial dorsocentral bristles, but no acrosti- 

 chal bristles; further a humeral bristle, a posthumeral, a notopleural 

 and a postalar bristle. Scutellum with two marginal bristles. Metapleura 



