in the British Museum. LIT 
Type in the collection of the British Museum (Natural 
History). 
Nephrotoma marshalli, sp. n. 
Antennal flagellum dark brown, the segments relatively 
short ; head orange, the occipital mark large, light brown ; 
frontal tubercle bifid ; mesonotal prescutum yellow, the 
prescutum with three distinct black stripes ; wings faintly 
greyish, the extreme tip darkened ; apices of cell R; and Jd, 
with macrotrichie; abdomen orange, the second tergite 
with two small brown marks near the caudal end ; a con- 
spicuous black subterminal ring, including tergites six and 
seven and sternites six to eight. 
Male.— Length 12°3 mm.; wing 14 mm. 
Frontal prolongation of the head yellow, more rufous 
dorsally ; nasus long and slender. Antenne short, if bent 
backward not extending far beyond the wing-root ; the 
second and third flagellar segments have the basal enlarge- 
ment and the apical swelling approximately equal in size ; 
first flagellar segment dilated on the distal end, the opposite 
face bearing two strong bristles; first scapal segment 
orange ; second segment and basal half of the third obscure 
orange-brown. Head yellowish orange; occipital mark 
large, light brown, the anterior end not sending a long point 
ou to the frontal tubercle (as in N. crocea) ; frontal tubercle 
distinctly bifid. . 
Pronotum yellow. Mesonotal prescutum yellow with 
three conspicuous black stripes that are not confluent or 
approximated ; lateral stripes bent strongly laterad to the 
margin of the sclerite ; scutum yellow, the lobes largely 
black ; scutellum yellowish testaceous, the lateral sclerites 
almost black ; postnotum light yellow, on the posterior 
third with two large, circular, blackened areas ; lateral 
sclerites light yellow and reddish brown. Pleura light 
yellow, variegated with reddish. MHalteres dark brown, the 
knobs light yellow. Legs with the cox pale reddish ; 
trochanters reddish yellow ; femora brown, the tips brown- 
ish black ; tibiz and tarsi almost black. Wings with a 
faint greyish tinge, the costal cell faintly, the subcostal cell 
strongly, yellowish ; stigma dark brown; extreme tip of 
wing darkened ; veins dark brown ; a few macrotrichiz in 
the apices of cells R; and M,. Venation: cell M, short- 
petiolate to narrowly sessile. 
Abdomen with the first tergite orange, about the basal 
half brown ; tergite two orange with two paired brown dots 
