DIPTERA. 305 
Tuyreopuoras Lat. Meig.—Musca, Panz. 
Where the antennz are received into a sub-frontal cavity, with a 
lenticular, but not transverse, palette; the head gradually inclines 
from its summit to the mouth; the posterior thighs are thick, and 
the second and following joints of the tarsi are almost similar. 
All the terminal cells of the wings are closed by their posterior 
edge. The palpi are much widened at the end in the manner of a 
spatula. 
T’. cynophila, Panz., Faun. Insect. Germ, XXXIV, 32. Deep 
blue; head reddish-yellow; two black points on each wing; 
scutellum terminated by two spines. Found on dead dogs, and 
always in autumn. According to an observation communicated 
to me by one of our most learned and zealous entomologists, 
M. Percheron, Jun. this Insect is sometimes phosphorescent, a 
peculiarity that struck one of his friends who witnessed it in 
his chamber at night, and induced him to capture it(1). 
Spuzrocera, Lat.—Borborus, Meig.—Copromyza, Fall. 
Where the antennz are salient, with the palette almost hemisphe- 
rical and transversal; the head is abruptly concave below the front 
and turned up near the oral cavity, of which the superior extremity 
is bordered; the posterior thighs are compressed, and the two first 
joints of their tarsi are evidently wider than the following ones. 
The second cell of the posterior extremity of the wing—the last 
of those which occupy the middle of their length—is closed before 
the posterior edge. The proboscis is very thick, and the body is 
depressed. 
These Diptera are almost always found in the vicinity of dung- 
hills, which is most probably the abode of their larve(2). 
Sometimes the posterior legs scarcely differ from the others. 
The antennz of several are almost as long as the face of the head, 
and their seta is frequently pilose. The sides of the face are occa- 
sionally glabrous. ; 
In some, the antenne are almost as long as the face, inclined, 
(1) Lat., Gener. Crust. et Insect., IV, 558; and Meigen. 
(2) Lat., Ibid., 1V, 359; Wied., Anal. Entom., under the name of Copromyza. 
Vout. 1IV.—2 0 
