The Crnne-flies^ of South Africa (Diptera, Tqndidae). 177 
A-llotype, 9 , Overbeck, Mossel Bay, Cape Colony, 1897. 
Paratypes, (J , with the allotype ; ? , Barbertou, Transvaal, April, 
1911 (H. Edwards). 
Type in the South African Museum. 
Nephrotoma antennata, Wiedemann. 
1821. Wiedemann, Diptera Exotica, vol. 1, p. 53 (Tipula). 
1828. Wiedemann, Aussereur. Zweifl. Ins., vol. 1, p. 53 (Tipula). 
1888. Beru:roth, Eut. Tidskrift, vol. 9, p. 140 (Pachyrrhina). 
Bergroth's specimen (No. 1), without locality, but in the paper 
cited above given as " Cape Town." The specimen is a male measuring 
12'4 mm. in length, and the wing 13*5 mm. 
The wing is shown on Plate XII, fig. 38. 
The coloration of the thorax, well described l>y Bergroth, offers a 
very good specific character ; the middle thoracic stripe is not as dark 
in colour as the lateral stripes and is narrowed toward the caudal 
end, not attaining the transverse suture ; the opaque black hne 
surrounds the lateral stripe except a small portion on the outside ; 
the same intense marking occupies the lateral portions of the trans- 
verse suture and runs caudad as a small spot above the wing-root ; 
postnotum with a distinct brown median mark. Hypopygium with 
the ninth tergite (Plate XIV, fig. 64) short, broad, the caudal margin 
with a very broad and deep U-shaped notch with a low, obtuse, 
median tooth ; outer pleural appendage pale, large, very conspicuous. 
Nephrotoma tigrina, sp. n. 
Head orange, occipital mark distinct; thorax yellow with black 
stripes, the median stripe paler centrally ; abdomen with the tergites 
banded ; hypopygium yellowish and black. 
Male. Length 13-6 mm. ; wing 12-4 mm. ; antennae al)OUt 6 mm. 
Female. — Length 16 mm. 
Frontal prolongation of the head short, nasus slender; palpi yellowish- 
brown, darker toward the tip. Antennae moderately elongated ; first 
segment orange ; second segment brown ; flagellum l)lack, the base 
of the first segment a little paler ; flagellar segments rather feebly 
incised beyond the basal swelling. Head orange, more yellowish on 
the genae ; a large rounded lilackish spot near the base of the frontal 
tubercle and adjoining the inner margin of the eye ; occipital triangle 
prominent, shiny, dark brown. 
Pronotum obscure yellowish dorsally. Mesonotal praescutuni shmy 
yellow with three black stripes, the median stripe with the central 
