The Crane-flies of South Africa (Diptera, Tipulidae). 161 
vertex, this with a deep mediau furrow ; head yellowish-brown with 
an indistinct narrow darker median line. 
Thorax dull brownish-yellow with three rather indistinct brown 
stripes on the praescutum ; scutum and postnotum brown, the 
scutellum more yellowish. Pleura yellow, the mesopleura largely 
brown with a sparse pale bloom. Halteres elongated, pale yellowish, 
the bases of the knobs dark brown, the apices brighter. Legs with 
the coxae small, greyish-yellow with a bloom ; trochanters yellow 
suffused with brown ; femora brown, paler at the extreme base, the 
tip black, a subequal pale yellow ring just liefore the tip ; tibiae dark 
brown, the tips narrowly darker ; tarsi dark 1)rowu ; tibial spurs very 
short. Wings with the liasal half pale greyish, the apical half more 
hyaline ; stigma prominent, rectangular, dark brown ; pale brown 
marks at the base of M, origin and fork of Bs and along the basal 
deflection of Cii^; tip of the wing in cell R^ a little darkened; a 
narrow hyaline streak in cell B just before the bend in the sector ; 
base of the wing more hyaline. Venation (Plate XI, fig. 22), 8c^^ 
entering B^ just beyond the fork of Bs ; Bs rather long, angulated 
and spurred at its origin ; cell B^^ large, vein i?„ oblique, the radial 
cross-vein somewhat indistinct ; vein M strongly arcuated just before 
its fork ; basal deflection of Cu^ at the fork of M and fused with M.^ 
for a distance about equal to the deflection of Cu^ alone ; second anal 
rather short and straight. 
Abdomen with the basal tergites pale yellow, the second segment 
with the intermediate portion dark brown ; third to sixth tergites 
blackish basally, the apices broadly silvery ; a large yellowish sub- 
apical area ; seventh segment largely yellow ; eighth and ninth seg- 
ments black ; sternites dark iDrown, the caudal margins broadly 
silvery; third to sixth sternites with a narrow linear yellow mark on 
the mid-line and a yellowish subterminal area ; eighth and ninth 
segments dark brown. Male hypopygium with the ninth tergite 
black, the sclerite arched so that the caudal margin (Plate XIV, fig. 54) 
appears to be very broadly V-shaped; the dorsal surface with 
numerous black semi-appressed hairs. Ninth pleuro-sternite exten- 
sive, profoundly incised beneath on the mid-ventral line, projecting 
beyond the caudal margin of the ninth tergite, the surface with 
numerous long hairs ; pleural appendages two (Plate XIII, fig. 43), 
the outer one slender, the extreme base narrowed, the knob elongate 
with a very few scattered hairs ; inner appendage compressed, ending 
in a slender, finger-like lobe that projects into the notch of the 
tergite, the outer margin of the sclerite with numerous outstretched 
black hairs giving a hystriciform appearance to the appendage. 
