58 
DIPTERA 
11. Cubitus forks under or proximad of the fork 
of the media, branches of the cubitus make 
a very acute angle with each other and 
are but slightly divergent; setae of hind 
tibiae more than twice as long as the dia- 
meter of the tibiae; ocelli three (PI. 6, 
Fig. 20) 5g. Genus Epicypta, Winnertz. 
gg. Costa does not extend beyond the tip of the radial sector. 
h. Second palpal joint much enlarged and thickened, 
flattened ovate; antennae very short, not much 
thickened; tibiae stout, enlarged at the extremities, 
almost clavate; base of the fork of the cubitus 
proximad ef the R-M crossvein, subcostal vein 
ending in R^; anal vein slender (PI. 6, 
Fig. 15) 54. Genus Brachypeza, Winnertz. 
ii. Antennal joints not closely sessile and torus-like. 
']. Three distinct ocelli, the laterals ividely remote 
from the eye margin ; base of the radial sector 
distad of the center of the wing, anterior branch 
of the cubitus detached at the base (PI. 6, 
Fig. 14) 27. Genus Clastobasis, Skuse. 
jj. Lateral ocelli nearly or quite contiguous to the 
eye margin in the recent forms at least. 
k. The ranges of setae on the hind tibiae slender 
and usually little if any longer than the dia- 
meter of the tibiae. 
1. Cubitus forks proximad of the fork of the 
media. 
m. Anal vein very stout and ends abrttptly 
angle between the branches of the cubitus 
veiy acute at the base, the lower branch 
beyond its middle suddenly diverging 
from the upper branch, base of fork pro- 
ximad of the proximal end of the R-M 
crossvein (PI. 6, Fig. 16). ... 55. Genus Rhymosia, Winnertz. 
mm. Anal vein slender (PI. 6, Fig. 17, 
longer than the head, twelve to sixteen jointed ; 
ocelli two (PI. I , Fig. 7, 9; PI. 6, Fig. 13, 
PI. 7, Fig. 20 
53. Genus Cordyla, Meigen. 
hh. Antennae usually of moderate length , 2-^14 jointed; 
palpi joint not conspicuously enlarged. 
i. Intermediate antennai joints closely sessile, annular 
or torus-like; second palpal joint somewhat 
usually a littlebeyond fork of the cubitus. 
11. Cubitus forks distad of the media. 
55. Genus Allodia (= Allodia-\~Brachy- 
\campta), Winnertz. 
