100 Dr. C. P. Alexander on African Crane-flies 
in the male sex, if bent backward, extending to beyond the 
base of the third abdominal segment; first scapal segment 
obscure yellowish brown ; remainder of the antennze black ; 
flagellar segments densely covered with a short, erect, white 
pubescence. Head deep orange; a rich reddish-brown spot 
adjoining the inner margin of the eye; occipital mark 
indistinct. 
Pronotum velvety black, the lateral portions of the scu- 
tellum more yellowish ; in the female, the median area of 
the scutum is broadly orange. Mesonotum shiny blue-black, 
only the extreme humeral angles of the przscutum obscure 
yellow ; median sclerite of the postnotum with only the 
extreme cephalic (dorsal) margin indistinctly brighter in 
the male, tis sclerite largely orange-yellow in the female ; 
lateral sclerites of the postpotum with an extensive yel- 
lowish-white area, which also includes the mesepimera of the 
pleura. Pleura black with the yellowish area before the 
halteres just described ; dorso-pleural membrane obscure 
yellow. . Halteres black. Legs with the cox and tro- 
chanters black ; remainder of the legs black, the bases of 
the femora indistinctly pale brownish. Wings with a strong 
brownish tinge, cell C more saturated, cell Sc dark brown ; 
stigma oval, dark brown, the proximal end sparsely hairy, 
there being about fifteen macrotrichie, all lying proximad 
of » ; a brown seam along the deflection of R,,; and r-m ; 
wing-apex slightly darkened ; a brown seam occupying the 
space between Cu and the abortive vein immediately behind 
it ; veins brownish black ; usually a large number (30-35) 
of macrotrichiz in the end of cell R;, this number rarely 
reduced. Venation: Rs rather short, about as long as the 
deflection of R,,; and r—m taken together ; cell M, short- 
petiolate or narrowly sessile; fusion of J/; and Cu, slight, 
about equal to M beyond this fusion. 
Abdomen black, the caudal half of the segments velvety 
black, the basal half more blue-black ; appendages of the 
male hypopygium dull yellow. Male hypopygium with 
the ninth tergite with the median area produced caudad and 
with a deep, U-shaped, median notch, the caudal margin of 
the lobes thus formed more transverse than in N. chetopyga, 
the lateral angles conspicuous, the proximal! margins with 
numerous spinous tubercles. Pleural appendages small, the 
outer appendage narrowed at the base, thence suddenly 
enlarged and tapering rapidly into the long slender apex ; 
inner pleural appendage flattened, the cephalic margin 
heavily blackened and with one conspicuous tooth. Ninth 
