Asilidss from Aden and its oieighhourliood. 93 



white hairs and bristles. Antennae short"; first and second joints 

 brownish -rufous, with white and black hairs ; third joint blackish, 

 elliptical, shorter than the first joint. Proboscis black ; palpi 

 rufous with whitish hairs. Thorax cinereous ; the usual brown 

 picture very conspicuous ; the middle band widening to the front and 

 divided by a clear median stripe ; the lateral bands interrupted and 

 forming a row of three spots ; thoracic dorsum with very short, 

 blackish hairs, posteriorly with several long black bristles ; similar 

 bristles at the sides ; on the lower part of the prothorax long 

 whitish hairs ; scutellum cinereous, on the hind margin with two 

 long, usually black but sometimes yellow bristles (in one of the 

 specimens the right bristle is black, the left one yellowish) ; the 

 bristles before the halteres whitish. Abdomen elongate, attenuated 

 towards the apex, cinereous, each segment with a large blackish 

 dorsal spot ; in the male the eighth segment wholly black, shorter 

 than the preceding ; the genitalia small, ovate, with whitish hairs ; 

 in the female the eighth segment shining, black or dark rufous, as 

 long as the preceding ; the ovipositor short, black, with some very 

 short spines on each side ; in both sexes the first and second abdominal 

 segments have whitish bristles towards the sides. Legs slender j 

 coxae grey ; femora blackish, the fore and middle ones rufous on the 

 underside ; tibise yellowish-rufous ; tarsi brown ; but all this color- 

 ation more or less modified by a white pilosity ; fore tibise towards 

 the apex with long whitish hairs ; bristles of the legs generally 

 white, but some of them black ; those of the tarsi black ; foot-claws 

 black ; pulvilli orange-yellow. Halteres yellowish-rufous. Wings 

 (PI. Ill, fig. 5) much shorter than the abdomen, hyaline, with the 

 tip greyish ; veins black ; small cross-vein on the middle or a little 

 before the middle of the discal cell, which is proportionately 

 narrow. 



Some specimens of both sexes, from Lahej and Haith- 

 alhim. 



Fairly common. I have examined six specimens (3 $ 

 and 3 $). One of them was captured preying on a butter- 

 fly {Lycs&na gaika). 



19. Apoclea femoralis, Wied. 



Asilus femoi'olis, Wied. Aussereur. Zweifl. i, p. ^QQ. 



Several specimens of both sexes, from Huswah, Shaik 

 Othman and Lahej. One of them was captured preying 

 on a butterfly (Synchloe glauconome). 



Wiedemann's description is quite applicable, but as it 



