f>. LEPTIS 267 



rather smoky wings on which is a conspicuous blackish stigma. 

 Legs mainly black, even to the base of the femora. 



(J . Epistoma socketed, I'ather quadrate, quite bare and light slaty grey, but the side- 

 cheeks whitish grey and bearing conspicuous long whitish pubescence, while 

 the pubescence becomes rather longer on the moderate-sized jowls and for 

 about half-way up the back of the head, after which (as the back of the head 

 becomes shallower) the pubescence becomes shorter and thinner and leaves 

 some short black bristles near the eyes which become numerous on the upper 

 (piarter of the head ; vertex rather deej^ly excised across the occiput, elongate 

 triangular, bearing in the ocellar triangle several short lilack bristles which 

 are sloped forwards greyish black, but with the small triangular space below 

 the ocelli slaty grey and quite bare. Proboscis brownish black, and bearing 

 some slight brownish hairs beneath ; palpi greyish black, slightly drooping, 

 and bearing conspicuous greyish white pubescence, intermixed with which 

 near the base are usually a few black bristly dorsal hairs. Eyes touching 

 for a third the distance between the occiput and the antennae ; facets 

 almost imperceptibly decreasing in size upw^ards and backwards. Antennae 

 dark greyish brown ; two basal joints short, but about equal in length and 

 both bearing a few short black dorsal bristles ; third joint minutely pubescent, 

 not longer than each basal joint but difterently shaped, being slightly pointed, 

 and with the arista emerging from the point ; arista upturned, bare, blackish 

 and hardly tapering, twice as long as the antenna. 



Thorax dull slaty grey, with three consiiicuous blackish stripes of which the 

 middle one may be very narrowly split, and this one extends back only two- 

 thirds the length of the thorax but the side ones are shortened anteriorly and 

 extend further back ; a space between the humeri and the mesopleurae, another 

 space at the root of the wing, and the suture connecting these spaces slightly 

 ferruginous. Pubescence fairly long and conspicuous though rather sparse, 

 composed of rather long erect black bristly hairs, but varying considerably 

 in length and leaving bare spiaces on about the beginning of the middle 

 (sometimes double) blackish stripe and also on large spaces on the outer 

 stripes above the suture and again Avhere these stripes widen out below the 

 suture ; the dull ferruginous space against the humeri bears some very short 

 pale pubescence with a few ferruginous hairs intermixed ; prothorax with 

 conspicuous pale pubescence ; metapleuraj with fairly abundant brownish 

 yellow pubescence ; mesopleurae with a few tiny black bristles on the upper 

 hind corner. Scutellum slaty grey, and bearing equal rather long and 

 abundant black bristly pubescence. 



Abdomen moderately shining orange ochre with Ijlack markings ; basal 

 segment blackish grey right up to the hindmargin ; second and third 

 segments each with an isolated black dorsal spot ; fourth segment with a 

 large black dorsal spot which occupies all the middle part from the front to 

 the hindmargin ; fifth, sixth, and seventh segments all black ; seventh 

 segment short ; sidemargins on the second, third, and fourth segments with 

 an equal narrow blackish line. Pubescence fairly abundant, all black, erect, 

 and not short on the five basal segments, though adpressed on the disc, and 

 much shorter on the sixth and seventh segments. Belly clear orange on the 

 four basal segments with slight inconspicuous erect ptile pubescence, but the 

 hfth to seventh segments are blackish grey and bear slight short blackish 

 pubescence. Genitalia with a pair of rather large blackish grey side lamellae 

 which end dorsally in a pair of dark orange long narrow hooks ; there is 

 some slight pale pubescence on these side lamellce, and some pale pubescence 

 on the ventral plate near them. 



Legs mainly dull black, but the tibiae (except about the last third of the 

 hind pair) ferruginous as well as the apical quarter of the front femora_ and 

 the apical half (or more) of the middle femora, Avhile the front tarsi are 

 very slightly and the middle tarsi obviously ferruginous at the base ; apical 

 third of the hind tibiae somewhat indeterminately dull blackish. Front 

 coxae all slaty grey, with fairly abundant pale yellow pubescence on all the 

 front side rising from small black punctures, but there is the usual polished 

 black bare space in front near the base ; front trochanters very short and 



