NEW CEYLON DIPTERA. 393 
first posterior cell in angle made by junction of third vein with 
the anterior cross-vein, and another, somewhat larger, and 
sagittiform, in outer half of discal cell. The dark colouration 
is prolonged inwards in first basal and discal cells nearly to the 
anterior basal cross-vein. As in S. nigripeda the anterior 
cross-vein is slightly beyond the middle of the discal cell. 
There are two small bristles on third vein immediately beyond 
its separation from second vein. 
Long: 7 mm. 
Described from a unique female in good condition taken on 
Lantana scrub. Suduganga, Matale, Ceylon, March 30, 1919. 
Type in my own collection. 
The crossed postvertical bristles are contrary to a family 
character, whilst Bezzi, in his generic description (Mem. Ind. 
Mus., I1., p. 121), says nothing of their direction, from which 
it may be assumed that they are normal, 7.e., parallel or 
diverging. In the species here described they would appear 
to be stronger than the generic character lays down. The 
three mesopleural bristles are abnormal, but in all other 
respects the species agrees well with Bezzi’s genus, wherein [ 
leave it for the present. 
Sciomyzidz. 
TRIGONOMETOPUS ZEYLANICUS Nn. sp. 
Male.—Head frons flattened, horizontal (generic character), 
at its narrowest (opposite fronto-orbital bristles) about one- 
third width of head; widened at vertex, brownish-yellow, 
paler along eye margins. Ocellar triangle well below vertex, 
situated in the anterior half of an ovoid slightly darker area 
extending to behind vertex, the area between the actual ocelli 
very dark brown. Verticals two, interior converging, exterior 
diverging. Postverticals crossed. Ocellar small. Fronto- 
orbitals two pairs, occipital row strong. The central area of 
frons, below ocelli, with a double row of small bristles, and on 
anterior border, between lower fronto-orbitals and antenne, 
the whole area bristly. All cephalic bristles black. Face 
very retreating (generic character), carinate below antenne, 
wholly yellow. A small cuneiform dark brown spot extends 
from anterior ey2 margin to root of antennae. <A row of black 
