92 SYRPHID.®. 
dark fringe ; halteres with a yellow stalk and darker knob. Abdo- 
men entirely shining blackish wneous, very shortly dark pilose, only 
on the sides with longer and paler hairs; the fore halves of the 
segments are slightly greyish pollinose, while behind there is an 
indistinct transverse dull black band, nearer to the hind border and 
produced forwards towards the middle. Venter black and with 
black hairs. Legs black, with pale and black hairs; hind femora 
~ 

1 
Fig. 15.— Hristalodes seychellarwm, sp.n. Q. X35. 
shining, thin; all the tibize vellowish near the base, the anterior 
four more broadly : tarsi black, the first joint yellowish; claws 
black, with reddish base. Wi ings distinctly infuseated, with black 
veins, the vena spuria being “also darker than usual; stigmal 
spot very elongate, entirely black; the venation is normal, the 
discal cell not appendiculate, and the second basal cell not dilated 
towards its upper corner. 
Type 2, a single specimen from Mahé, Sey chelles. 
Genus 16. ERISTALIS, 2ondanz (1844). 
The following species are represented in the collection :— 
1 (2) Eyes with two bands of brown hairs; 
‘hind femora thin ; wings without any 
pubescence and with the kink in the 
third vein rounded ..... pt ae tena, L. 
2 (1) Eyes with unicolorous hairs ¢ ; hind 
‘femora much thickened ; wings minutely 
pubescent and the kink in the third 
vein rather angular. 
3 (4) Wings unspotted ; facial tubercle black ; 
hind femora with the basal half bright 
OULOW «cos wep mica gis spe tao .... @asyops, Wied. 
) Wings with an apicel brown spot : . facial 
tubercle reddish ; hind femora w holly 
pani, Gacy hee eae. Cts... UL: meromacriformes, Sp, Ni, 
rs 
