310 INSECTA. 
sent to me from Germany, and marked Piophila vulgaris(1) is in 
the same case as the -first, but does not appear to me to be suffi- 
ciently removed from the Oscini(2). 
The fifth division, that of the Doricnuocera, and which embraces 
the genus called Zefanocera by M. Duméril, closely approaches the 
fourth; but the length of the second joint of the antenne which is 
here equal to that of the third, or the palette, and most frequently 
surpasses it, serves to distinguish them. These organs, always. 
distant and projecting, are, with but few exceptions, as long as the 
head or longer, and terminated in a point. The superior plane of 
the head forms an obtuse triangle, or one truncated at the apex. 
The face is smooth onbut slightly silky. 
In some the antennz are shorter than the head. 
Orires, Lat. 
Where the seta of the antennz is simple and the inferior extremity 
of the head, or its oral portion, does not project(3). 
Euruycera, Lat. 
Where the second joint of the antennz is larger than the follow- 
ing one, almost square, and the latter is triangular and pointed, with 
(1) The P. scutellaris of Fallen and Meigen. The face is but very slightly 
silky. The top of the head and thorax is pilose in the Heleomyzz, a subgenus 
that is easily confounded with the preceding one. In Oscinis or Piophila and Chlo- 
rops, the summit of the head, as we have already stated, presents posteriorly a 
triangular space, sometimes even slightly prominent, and usually brown and glossy, 
on which the ocelli are situated. The antennz are always distant, and the seta is 
simple. The body alone is pubescent. The legs are proportionally more robust 
than those of the Heleomyzz, and it is evident that these Insects approach the 
Tetanocera. Messrs Fallen and Meigen have not sufficiently compared the 
characters of the genera they have established, nor endeavoured to approximate 
them in a natural series, which makes it a difficult matter to discern the difference 
between severalof them. I have frequently been embarrassed with genera, from 
which I could have been relieved by the work of the latter, but it is not yet pub- 
lished. 
(2) See the Nouv. Dict. d’Hist. Nat. 2d edit., article Oscine, divis. II, and Lat., 
Gener. Crust. et Insect., 1V., 361; Oscinis lineata, and the following species. See 
also with respect to Piophila, Fallen, Meigen, and Wiedemann—Analect. Entom. 
(S) Lat., Hist. Nat. des Crust. et des Insect.; the second edition of the Nouy. 
Dict. d’Hist. Nat., article Oscine, divis. 1; and Lat., Gener. Crust. et Insect., IV, 
351; to this subgenus I also refer the Oscinis umbraculata, Fab. 
