284 INSECTA. . 
Piriza, Meig.—Psilota, Meig.—Eristalis, Fab.—Milesia, Lat. 
Where the posterior legs are merely-somewhat larger than the 
others, and the abdomen is depressed, semi-elliptical and rounded 
at the end. The eyes are pubescent. These Insects are closely 
allied to Syrphus, and particularly to Chrysogaster, Meig.(1) 
Bracuyopa, Hoff. Meig. 
Distinguished from all the preceding subgenera by the wings, 
which extend considerably beyond the abdomen. These Diptera 
closely resemble the Milesiz, and appear to lead to Rhingia, the last 
subgenus of this tribe. According to Meigen the seta of the an- 
tennz is pilose at base, but I never could discover those hairs in any 
of the specimens I obtained. To this subgenus the same naturalist 
refers the Oscinis olive of Fabricius, which most certainly belongs 
to the Muscides(2). 
In those Syrphide of which we have hitherto spoken, the pro- 
boscis is shorter than the head and thorax, and the projection forms 
a short and perpendicular rostrum. We now proceed to others in 
which that proboscis is evidently longer and almost linear, and the 
anterior projection of the head is proportionally more elongated, 
and directed forwards in the manner of a pointed rostrum. These 
Insects, in their wings, which are incumbent on the body, and in 
the form of their antennz, closely resemble the Brachyope and 
Milesiz. The thighs are simple. They form the 
Ruineia, Scop. Fab. Meig.(3) 
The genus 
Pe.ecocera, Hoffmanseg, 
Figured by Meigen, is unknown to us, but it is easily distinguish- 
ed from all those whose antenne are shorter than the head by the 
(1) Idem, genera Pipiza and Psilota. 
(2) See Meigen. 
(3) Fab, Lat., Meig., &e. 
