140 Annals of the South African Museum. 
Mesouotum and pleura shiny orange without markings. Halteres 
-dark brown. Legs with the coxae and trochanters orange-yellow ; 
femora yellow 1)roadly tipped with black ; tibiae yellowish-brown, the 
apices black ; tarsi broken. Wings with the ground-colour light 
yellowish, most intense in the costal area, the apex and anal cells 
darker, greyish ; a In-own seam along the cord ; a similar interrupted 
,seam at the tip of E^, fork of -B4 + 5, the fork of M and about mid- 
length of Ctti beyond the m-cu cross-vein. Venation, (Plate X, fig. 1, 
upper left band corner), Rs very short, less than the r-vt. cross-vein ; 
deflection of Ri+-, punctiform ; r-m longer than in -en ; apical cells of 
the wings pubescent. 
Abdomen yellowish-orange, dark brownish-])lack along the mid- 
dorsal line of the tergum ; apical segments destroyed excepting the 
hypopygium, which is orange. 
Habitat. — South Africa. 
Holotype, <J , M'fongosi, Zululand, February, 1914 (W. E. Jones). 
Type in the South African Museum. 
This is the first representative of this family of flies to be discovered 
in Africa and the first species of Ptychoptera to be described from the 
southern hemisphere. 
Family TIPULIDAE. 
tSuH-FAMij-Y LIMNOBIINAE. 
Tribe LIMNOBIINI. 
Gen. DICRANOMYIA, Stephens. 
1829. Cat. Brit. Ins., vol. 2, p. 243. 
DlCRANOMYIA LIGHTFOOTI, Sp. U. 
Antennae black ; thorax light l)rown, thoracic stripes dark brow-u ; 
pleura yellow with two dark brown stripes ; wings greyish subhyaline ; 
cell 1st If 2 open ; subcosta short. 
Male. — Length 47 mm. ; wing 6-8 mm. 
Kostrum and palpi dark brownish-black. Antennae black, short, 
the flagellar segments globular, moniliform. Head brownish-grey. 
Mesouotal praescutum light brown with a very broad dark brown 
median stripe ; lateral stripes shorter ; scutum with the lobes brown ; 
scutellum brownish-grey ; postnotum brown. Pleura dull yellow with 
two dark brown stripes, the dorsal stripe extending from the cervical 
sclerites underneath the base of the halter to the abdomen ; ventral 
