SYRPHLD-E. 
25 (34) Marginal cell closed and usually pro- 
vided with a loug stalk; if it is 
shortly stalked or even narrowly 
open, then the kink in the third vein 
is angular and appendiculated. 
24 (29) Eyes bare ; kink in third vein deep and 
usually ‘appendiculated ; scutelluin 
of larger size, margined. 
25 (26) Subcostal and marginal cells at end 
about of equal length, the stalk of 
the latter cell being very short ; eye 
adorned with pale spots and touching 
in the male, the vertical triangle 
being in the same sex long and 
narrow; frons of female narrow; 
antennal tubercle very prominent ; 
wings pubescent all over their sur- 
fies ees. Pe a raccaMensie srster ‘aitertn 
26 (25) Marginal ceil much shorter at end 
than the subcostal one, the former 
having a long stalk; eyes without 
pale spots, often adorned with hori- 
zontal dark bands; vertical triangle 
of the male short; antennal tubercle 
not prominent; wings entirely bare, 
or pubescent oniy on limited areas 
near the middle or towards tlie 
tip. 
27 (28) Eyes of male touching and provided 
with larger facets above ; head very 
swollen, the frons with a denudate 
callose area above the antenne and 
also very broad in the female; hind 
femora not thickened; wings bare, 
very rarely pubescent. towards the 
et) Se aan crt eset 
28 (27) Eyes of male widely separated and 
with small facets above; head not 
swollen, without a supra-antennal 
eallosity; frons of female narrow ; 
hind femora strongly thickened ; 
wings pubescent towards LID pays ht « 
29 (24) Lyes hairy, at least above; if bare, 
‘they have brown spots; kink in the 
third vein broad and rounded, never 
appendiculated ; scutellum of ordi- 
nary size, not margined. 
30 (33) Eyes hairy only above or rarely wholly 
‘bare, adorned with dark spots or 
with dark stripes. 
31 (82) Eyes with brown spots, sometimes 
bare and sometimes separated in the 
miler Sis Aang oh ac «nips 
32 (31) Eyes adorned with brown perpendicular 
‘stripes: eyes of male always united 
and always haityWees.. cl... cr. : 
Prory.LocrRa, p. G1, 
PuHyTomta, p. 65. 
Simoes, p. 76, 
(ip.\az 
LATHYROPHTHALMUS, 
ERistaLopns, p. 87. 
