300 INSECTA. 
nate in the same manner as in the preceding ones, or present two 
complete cells between the middle and the edge. 
Acuias, Fab. 
Remarkable for the horn-like prolongations of the sides of the 
head, and approximating in this respect to Diopsis; but their an- 
tennz are inserted high on the front, and similar in form and pro- 
portions of the joints to those of the Musce; the wings are distant(1). 
Ip1a, Meig. Wied. 
Where the anterior extremity of the head projects in the manner 
of a horny rostrum; the wings are incumbent on the body(2). 
In the other two and last subgenera of the Creophilz, the terminal 
cells of the wings are closed by the posterior margin. The eyes are 
very remote. The abdomen is flattened. 
Lispr, Lat. Fab. Meig.—Musca, De Geer. 
Where the body is oblong, the antenne inserted near the front, 
almost as long as the face of the head, with the last joint much 
longer than the preceding ones, linear, and furnished with a plu- 
mous seta. 
The wings are incumbent one on the other. The palpiare strongly 
dilated superiorly, in the form of a spatula, and somewhat exterior. 
These Insects are usually found along the banks of rivers, &c(3). 
Areyrirtis, Lat. 
Which, in the short form of the body, strongly flattened and almost 
semicircular abdomen, short, broad head, and distant wings, resem- 
ble the Phasiz. The antennz, inserted below the front, are very 
short, with the last joint a little larger than the penultimate, almost 
orbicular, and furnished with a simple and geniculate seta, like that 
(1) Fab., Syst. Antl. 
(2) See Meig., and Wied., Anal, Entom. I know two species, one from the 
tsle of France and the other from the enyirons of Paris. We should also refer 
-enus the Musca felina of Fabricius, which is found in the south of France. 
Lat., Gener., Crust. et Insect., IV, 347; Dej., Fall., and Meigen. 
