446 Miss G. Eicardo — A Revision of 



on tlie femora and tibiae. Abdomen olive- coloured, witli 

 grevish-yello-w tomentum. IVings hyaline, grey at base. 

 Length 23 mm. 



Face black, covered with yellowish-grey tomentum ; tlie 

 moustache on the prominent tubercle consists of yellowish- 

 white bristles ; palpi black, with yellowish-white hairs. 

 Beard whitish. Antennce with black pubescence on the first 

 two joints ; forehead same as the face, with some white 

 hairs ; hind part of head with yellowish-white hairs. Thorax 

 black, with greyish stripes and markings ; pubescence short 

 and black, some black bristles on sides and posteriorly ; 

 sides and breast covered with ashy-grey tomentum, and long 

 white hairs on breast. Scutellum as thorax, armed poste- 

 riorly with two strong black bristles. Abdomen covered with 

 greyish-yellow tomentum and with short fulvous- pubescence, 

 at the sides with yellowish hairs, and some yellow bristles on 

 each segment at the sides and before the segments ; genital 

 organs prominent, black ; underside of abdomen chiefly 

 covered with greyish tomentum. Legs reddish yellow, 

 shining ; coxae grey, with yellowish-white pubescence ; 

 femora with some long, scanty, yellowish bristly hairs 

 below and short black pubescence above, with short and 

 long yellowish bristles; on the middle femora there are 

 some stout black ones ; anterior and middle tibise with weak 

 yellowish liairs and some very short black pubescence, the 

 posterior pair with short black and yellow pubescence ; the 

 bristles on the anterior and middle pair are yellow, long and 

 short ones, with some black ones at their extreme apices and 

 on the underside of the middle pair ; the posterior tibiae with 

 strong yellow bristles ; tarsi largely black at their apices, 

 with yellow and black bristles, but only black ones on the 

 posterior pair, pubescence black, yellowish below. Halteres 

 yellow. Wings hyaline, the grey shading extends from the 

 apex almost to the base of the two branches of the third 

 longitudinal vein and as far as the fifth posterior cell ; 

 neuration as in Asilus inglorius, Macleay, but the small 

 transverse vein is below the middle of the discal cell ; veins 

 yellowish. 



Asilus in sensu lato. 



Asilus alcetus, coedicius, margitis, and villicatus, Walker, 

 are not true Asilus species, but their genus, owing to state of 

 types, is impossible to determine. 



The same is the case with Asilus exilis, laticornis, and 

 rarifemoratus, Macq. 



