174 Annals of the South African Museum. 
Frontal prolougatiou of the head short, orange; palpi brown. 
Antennae with the first scapal segment orange, second segment dull 
yellow ; first flagellar segment dull yellow, pale with a dense pale 
pubescence ; remainder of the antennae broken. Head bright orange, 
the frontal tubercle large and high ; occipital mark not apparent. 
Pronotum brown. Mesouotal praescutum brown with three ill- 
defined dark brown stripes that are not conspicuous on this dark 
background ; anterior ends of the lateral stripes capped by a velvety - 
black mark ; scutum pale brown with the lobes dark brown, at the 
outer cephalic angle with a velvety-black spot; scutellum and post- 
notum pale brown. Pleura brown w^ith scattered darker brown 
markings. Halteres short, dark lirown, the extreme bases paler. 
Legs with the coxae brown ; trochanters dull yellow ; femora black, 
the extreme bases a little brighter; til:)iae and tarsi black. Wings 
with a pale grey tinge, the costal cell rather dark brown ; stigma 
dark brown; a brownish seam along Cu, Rs, Bn, B.,, and i?j+-, ; veins 
black. Venation (Plate XII, fig. 35), Bs rather elongate for this genus 
of flies ; m-cv at the fork of M ; cell M rather broadly to merely 
sessile. 
Al)dominal tergites dull orange-yellow, brightest at the base, on the 
sixth segment passing into brownish-black ; apical segments, including 
the hypopygium, blackish; lateral margins of the tergites narrowly 
black ; sternites colored about as on the tergites. Male hypopygium 
with the ninth tergite black, the caudal margin with a deep U-shaped 
notch. Abdomen with numerous appressed hairs, more elongate and 
prominent toward the end of the organ. 
Habitat. — South Africa. 
Holotype, cJ, Barberton, Transvaal, October, 1911 (H. Edwards). 
Type in the South African Museum. 
This interesting Nephrotomn is dedicated to its discoverer. 
Nephrotoma strenua, sp. n. 
Head orange without a dark occipital mark ; antennae elongated, 
Hagellum bicolorous ; thorax with black stripes; abdomen dull 
brownish-yellow, toward the apex with an indistinct blackish annulus ; 
hypopygium yellowish. 
Male. — Length 14-5 mm. ; wing 1(5 mm. ; antennae about 9 mm. 
Frontal prolongation of the head short, yellow ; palpi brown, the 
extreme tip of the last segment yellowish. Antennae with the first 
scapal segment orange ; flagellar segments with the basal enlargement 
light brown, the pedicels brownish-yellow ; flagellar segments elon- 
gated, rather deeply incised beneath. Head yellow on the front and 
