334 INSECTA, 
Geoffroy has confounded the above genus with Asilus *. 
Geron, Meigq. 
This genus appears to be distinguished from Bombylius only by 
the more remarkable elongation of the last joint of the antenne and 
its subulate termination, and by the wings, which have onetransverse 
nervure less near the posterior margin, so that the number of the 
closed cells of that margin is less }. 
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 antennz 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 
genera. 
In the other species the proboscis is, at most, as long as the head, 
and inflated at the end; the first joint of their antenne is the largest 
of all. ‘Those, in which it much larger than in the following ones, 
form the genus 
Pioas, ConopHorus, Meg. f, 
And those in which it is simply larger, without any remarkable in- 
crease of thickness, the 
Cytienia §, 
Where the abdomen is more elonged and almost conical. 
AnTurax, Scrop.,ab.—Musca, Lin.—Anturacu, Lat., 
Similar to Bombylius; but where the body is depressed, or but 
slightly elevated and not gibbous, with the head as high and as broad 
as itself. The antenne are always short, and, in the Stygides alone 
excepted, distinct from each other, and always terminated by a subu- 
late or punch-like joint. The proboscis, except in a small number, 
is generally short, extending but little beyond the head, frequently 
even withdrawn into its oral cavity, and terminated by a little infla- 
tion formed by the lips. The palpi are usually concealed, small, fili- 
form, and each, at least in several, adhering to one of the threads of 
the sucker. The abdomen is less triangular than that of the Bom- 
bylii, and partly square. These Insects are generally hairy. Their 
habits are very analogous to those last mentioned. They frequently 
alight on the ground, on walls exposed to the sun, and on leaves. 
Some approximate to the Bombylii in their antennz, which are 
* Lat., Gener. Crust. et Insect., IV, 314. See also Latreille, Meigen, Fabricius, 
Macquart, and Olivier, article Bombille. The genera Corsomyza and Tomomyza of 
Wiedemann—Dipt. Exot.—are unknown to me. In the first, the last joint of the 
antenne is twice the length of the preceding ones, and compressed and dilated at 
the end. The second appears to approach Cyllenia and Mulion. 
+ See Meigen. 
+ Lat., Gener., IV, 312; Fab., Meig., Macq. 
§ Lat., Ibid., and Meig. 
