368 INSECTA. 
In some, such as the two following subgenera, the wing's terminate 
in the same manner as in the preceding ones, or present two com- 
plete 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 antenne are 
inserted high on the front, and similar in form and proportions of the 
joints to those of the Musce; the wings are distant*. 
‘Ip1a, Merg., Wied., 
Where the anterior extremity of the head projects in the manner of a 
horny rostrum; the wings are incumbent on the bodyt. 
In the other two and last subgenera of the Creophile, the terminal 
cells of the wings are closed by the posterior margin. ‘The eyes are 
very remote. ‘The abdomen is flattened. 
Lisrs, Lat., hab., Meig.—Musca, De Geer., 
Where the body is oblong, the antennz inserted near the front, almost 
as long as the face of the head, with the last jot much longer than 
the preceding ones, linear, and furnished with a plumous seta. 
The wings are incumbent one on the other. The palpi are strongly 
dilated superiorly, in the form of a spatula, and somewhat exterior. 
These Insects are usually found along the banks of rivers, &c.{ 
Areyritis, Lat., 
Which, in the short form of the body, strongly flattened and almost 
semicircular abdomen, short, broad head, and distant wings, resemble 
the Phasiz. The antenne, 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 of the 
antennee of the Gonie. The palpi terminate in a short, but almost 
ovoid and pointed club. 
I have established this genus on two species of Diptera sent to me 
by M. Marcel de Serres, and captured by him in the environs of 
Montpellier. They are small, and furnished with a silvery down, 
which, in one, covers the whole abdomen. 
Certain species of Tachina, Meig., those, for instance, the type of 
whose wings, given in fig. 32 of pl. 41, and some of his Anthomize 
with large alule covering the greater portion of the halteres, will 
re-enter the last division of the Creophile. 
In all the other Muscides of which we are about to speak, the alule 
are sinall or almost wanting, the halteres are exposed, and the princi- 
pal longitudinal nervures of the wings extend to the posterior margin, 
which, except in a very small number, closes the posterior cells, and 
eVen some others that originate near the opposite extremity. The 
wings, in most of them, are incumbent, one on the other. 
* Fab., Syst. Antl. 
+ See Meig. and Wied., Anal. Entom. I know two species, one from the Isle of _ 
France and the other from the environs of Paris. We should also refer to this genus 
the Musca felina of Fabricius, which is found in the south of France. 
t See Lat., Gener., Crust. et Insect., IV. 347; Dej., Fall., and Meigen. 
