2. LEPTIS 263 



4 (7) Pubescence of the thorax pale. Kather small species. 



5 (6) Abdomen mainly orange (6), or considerably so (?). Front and 



hind femora with a dark ring leaving nearly the basal half of 

 the femora pale. 6 li7ieola. 



6 (5) Abdomen mainly darkened. Front and hind femora considerably 



more blackened. 7 monticola. 



{var. prcec.) 



7 (4) Pubescence of the thorax mainly black. Ptather large species. 



2 notata. 



8 (3) Stigma absent or inconspicuously yellowish. Legs normally all 



orange (except the tarsi), but if sometimes darkened then 

 indeterminately so. 



9 (12) Pubescence of the thorax (mainly) and of the abdomen black. 



10 (11) Belly yellow on the three or four basal segments. Abdomen 



always mainly orange. Paler species. 3 tringana. 



11 (10) Belly all blackish except on the hindmargins and side membranes. 



Abdomen often almost all blackish. Darker species. 



4 nigrivcntris. 

 {var. prcec.) 



12 (9) Pubescence of the thorax and abdomen pale. 5 annuloia. 



1. L. scolopacea Linne. Wings conspicuously maculated. Pleuras 

 ashy grey. Palpi mainly with pale pubescence. Eyes of the male 

 touching. (Fig. 187.) 



A rather large fly of narrow shape, with obviously spotted 

 winss and an orange abdomen on which is a dorsal row of 

 black spots. 



S . Head when viewed sideways nearly twice as liigh as long, but when viewed 



from in front wider than high. Face and frons small and (mcludmg the 



side-cheeks) triangular and whitish grey, but the actual epistoma nearly 



quadrate and the side-cheeks each nearly half as wide as the epistoma • a 



deep furrow runs between the side-cheeks and the epistoma, and while the 



epistoma is quite bare the side-cheeks have on the lower half a fairly 



conspicuous rather long but rather sparse pale yellow pubescence, _ and 



this pubescence extends and becomes much longer on the small jowls 



and on the moderately inflated whitish grey back of the head; 



upper part of the back of the head shallow, and bearing on the upper 



quarter an irregular row of short bkxck postocular bristles m front ot 



any yellow pubescence; vertex small, dull blackish, and bearing some 



minute black bristles on the ocellar part, but grey and quite bare on the 



elongated front part. Proboscis dull greyish black, about as long as the 



palpi, and bearing numerous hairs beneath ; palpi long, dull orange but 



often blackish about the base, rather drooping, and bearing I'ather 



abundant and fairly long pale pubescence, and sometimes with a few black 



rather bristly hairs intermixed on the basal half of the upper side Jiyes 



large, occupying almost all the head, and touching for about half the distance 



between the occiput and the antenna} ; facets all equal. Antennas (fig-. 188) 



dull orange ; basal joint short and bearing a few short black or yellow dorsal 



bristles; second joint shorter but also bearing a few black dorsal bristles; 



