in the British Museum. 113 
N. leonia, but is readily told by the coloration of the body 
and legs, and, especially, by the hypopygium and lack of 
macrotrichiz in the apex of cell R; of the wings. 
Nephrotoma tigrinoides, sp. 0. 
Antenne black, the flagellar segments short; scape 
orange ; frontal tubercle indistinctly bifid ; mesonotal pre- 
scutum yellow with three distinct black stripes ; postnotum 
glabrous ; halteres with the knobs tipped with yellow; 
wings nearly hyaline ; cell Sc darker ; conspicuous macro- 
trichiz in cell R;; abdomen orange, banded with black. 
Male.—Length 10°5 mm. ; wing 10°4 mm. 
Female.—Length 13 mm. ; wing 12°3 mm. 
Frontal prolongation of the head orange-yellow; palpi 
obscure yellow. Antenne with the scapal segments orange ; 
first flagellar segment pale basally ; remainder of flagellum 
black ; intermediate flagellar segments short, the basal 
enlargement and the apical swelling subequal in size. Head 
orange ; occipital mark small, triangular, dark brown, very 
distinct ; frontal tubercle indistinctly bifid. 
Pronotum yellow. Mesonotal prescutum yellow with 
three shiny black stripes; lateral stripes bent strongly out- 
ward; scutal lobes largely black; scutellum testaceous, 
darker laterally ; postnotum yellow, the apical two-fifths 
black, the surface glabrous. Pleura yellow, variegated with 
reddish. Halteres brown, the knobs dark brown, about the 
distal half dull yellow. Legs with the coxe reddish ; tro- 
chanters yellow ; remainder of the legs brown, the femoral 
bases yellow. Wings nearly hyaline, the subcostal cell 
brown ; stigma brown ; veins brown, those at the wing-base 
more yellowish ; several macrotrichiz in the outer end of 
cell R;, these occupying about the outer fourth, along the 
centre of the cell. Venation: cell M, short-petiolate ; cell 
2nd A narrow. 
Abdomen with tergite one black, only the caudal and 
lateral margins narrowly orange-yellow ; tergite two orange, 
the apical quarter black ; two small black dots at the second 
quarter; tergite three orange, the apical third black; 
tergites four and five orange with a black median area at the 
caudal margin, smallest on the fifth segment; a black sub- 
terminal ring occupying segment seven, the caudal half of 
six, and the basal half of eight ; hypopygium orange. The 
type male has the penis exserted and coiled like a watch- 
spring. 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. 3 
