306 Dr. C. P. Alexander on 
short distance beyond the origin of Rs, Sc, located a short 
distance beyond the origin of Rs, removed from the tip of 
Sc, to a distance about equal to 7m; Rs long, gently 
arcuated, a little more than twice as long as the deflection 
of R,,;; 7 close to the tip of R,; cell lst M, closed, longer 
than vein M7; beyond it; m gently arcuated, a little longer 
than r—m ; basal deflection of Cu, a short distance before 
the fork of 44; Cu, much longer than the basal deflection 
of Cu. 
Abdomen with the basal tergites brown ; remainder of the 
abdomen largely light fulvous brown. Ovipositor with the 
tergal valves very small, slender, upcurved; sternal valves 
broad, slightly expanded distally, the tips bifid. 
Hab. West Africa. 
Holotype, 2, Batanga, Cameroun, October 138, 1919 
(i> AL hers), 
‘Caught flying about lamp at night.” 
Dicranomyia shawi, sp. 0. 
General coloration obscure yellow, the mesonotal pre- 
scutum with a broad median stripe and inconspicuous lateral 
stripes of brown; pleura with an indistinct brown longi- 
tudinal stripe ; halteres yellow, the knobs dark brown ; legs 
with the femora brown, tipped with yellow ; wings brownish 
subhyaline ; stigma dark brown ; Sc long, cell 1st M, closed ; 
Cu, longer than the deflection of Cu, ; abdomen dark brown, 
the segments conspicuously ringed caudally with yellow. 
Female.—Length about 7 mm.; wing 8°5 mm. 
Rostrum and palpi brown, the latter rather conspicuous, 
slightly paler than the rostrum. Antennz with the scapal 
segments dark brown; flagellum broken. Head yellowish 
grey. 
Pronotum conspicuous, obscure vellow, dark brown above. 
Mesonotal prescutum obscure yellow with a broad, con- 
spicuous, dark brown median stripe that ends before the 
suture ; lateral preescutal stripes very narrow anteriorly, 
rather indistinct, crossing the suture and covering most of 
the seutal lobes; scutellum testaceous, darker caudally ; 
postnotum testaceous. Pleura yellow, with a broad but ill- 
defined longitudinal stripe that extends from the cervical 
sclerites to the base of the abdomen, passing beneath the 
base of the halteres. Mesosternum shiny brown. Halteres 
light yellow,*the apices of the knobs dark brown. Legs 
with the fore coxze shiny brown; middle and hind coxe 
light yellow; trochanters yellow ; femora brown, the bases 
Ps 
