316 Miss G. Ricarclo on 



1 mm., with almost straight borders, it widens slightly on 

 tiie second segment at the base ; on the sides of the second, 

 third, and fourth segments ill-defined but distinct grey spots 

 appear, not reaching the sides, but taking up the whole width 

 of the segment as a rule; the pubescence on the dorsum is 

 short, thick, black, with three stripes of whitish-grey pubes- 

 cence, covering the median stripe and the side-spots; these 

 can best be seen by viewing the abdomen from the front; 

 the lateral margins of the abdomen yellow, transparent, with 

 whitish-grey pubescence ; the underside brownish, the 

 segmentations and the sides yellowish, the pubescence black, 

 with two side stripes of the whitish-grey pubescence. Coxae 

 black, covered with grey tomentum and black and white 

 pubescence; the fore femora blackish, the middle and poste- 

 rior ones dull reddish with grey tomentum and whitish 

 ])ubescence; the tibiae yellow, the fore tibiae reddish at the 

 apex, at the base yellow with white pubescence, therefore 

 with the appearance of fore tibias pale at base ; the middle 

 tibiaj with white pubescence at the base and black at the 

 apex; the posterior tibite with black pubescence; the fore 

 and middle tarsi brownish, the posterior ones yellow, all with 

 black pubescence. Wings hyaline, slightly tinged with 

 brown on the longitudinal veins, on the fore border and 

 round the apices of the basal cells, and on the anal vein ; the 

 appendix distinct, the veins brown, the stigma small 

 and yellowish brown. 



This species is distinguislied from Tahanus alhilinea, Wlk., 

 by its slightly pubescent eyes, blacker, more pubescent, and 

 narrower abdomen, smaller size, darker antennae, blackish 

 frontal callus and stripe (not reddish brown as iti the Walker 

 species), darker femora, and more slender palpi. 



Tahanus obscurestriatiis, $ , sp. n. 



Type (female) from Congo, Nov. 18, 1904; 1904. 267 in 

 the British Museum collection. 



A small reddish species with a black median stripe and 

 clear wings with a short appendix. 



Length 12 mm. 



Head not large, but wider than the thorax. Face covered 

 with grey tomentum, the pubescence silvery white; palpi 

 reddish, with some wliite pubescence, stout at base, gradually 

 tapering to a point; beard white. Between the antennte 

 and across the face is an indistinct reddish-brown band ; the 

 antennae are reddish, slender, the tooth very slight, the first 

 and second joints with black pubescence. Forehead about 



