DIPTERA. 243 
Geoffroy has confounded the above genus with Asilus(1). 
Grron, Meig. 
This genus appears to be distinguished from Bombylius only by 
the more remarkable elongation of the last joint of the antennz and 
its subulate termination, and by the wings which have one transverse 
nervure less near the posterior margin, so that the number of the 
closed cells of that margin is less(2). 
The genus Thlipsormyza of Wiedemann—Dipt. Exot., I, iv—ap- 
pears to approximate to the preceding Insects and to Phthiria. That 
called Amictus I presume also approaches them; in both the first 
joint of the antenne is longer than the second, and cylindrical, a 
character which approximates them to Geron. The wings in Amic- 
tus, however, are somewhat different from those of the preceding ge- 
nera. 
In the other species the proboscis is, at most, as long as the head, 
and inflated at the end; the first joint of their antennz is the largest 
of all. Those, in which it is much larger than in the following ones, 
form the genus 
Pioas, Conophorus, Meig.(3) 
And those in which it is simply larger, without any remarkable 
increase of thickness, the 
CyLiLEenia(4). 
-Where the abdomen is more elongated and almost conical. 
ANTHRAX, Scop. Fab.—Musca, Lin.—Anthracii, Lat. 
Similar to Bombylius; but where the body is depressed, or but 
(1) Ibid., Latreille, Meigen, Fabricius, Macquart and Olivier, article Bombille. 
The genera Corsomyza and Tomomyza of Wiedeman—Dipt. Exot.—are unknown 
tome. In the first, the last joint of the antennz is twice the length of the pre- 
ceding ones, and compressed and dilated at the end. The second appears to 
approach Cyllenia and Mulion, 
(2) See Meigen. 
(3) Lat. Gener., IV, 312; Fab., Meig., Macq. 
(4) Lat., Ibid., and Meig. 
