DIPTERA. 249 
Sometimes the last joint, also terminated by a seta, forms, with 
the preceding one, a spherical body, as in 
Gioma, Meig. 
Where the proboscis is also very short(1). 
The others present distinctly but two joints in their antenne. 
The last is ovoid or almost globular, and terminated by a seta, 
forming, as in the preceding Insects, the second joint of the stilet. 
The proboscis is generally short, and the palpi are incumbent on it. 
Hemeropromia, Hoffm. Meig. 
Remarkable for the length of the coxz of the two anterior legs(2). 
Sicus, Lat.—TZachydromia, Meig. 
Distinguished by the inflation of the thighs of the first or second 
pair of legs(3). 
Drapetis, Meig. 
Where the last joint of the antenne is almost globular and the 
proboscis scarcely salient(4). 
M. Macquart, by applying the method of Jurine to the Diptera, 
and paying more attention to other parts, has established several 
new subgenera which our limits prevent us from describing(5). 
The remaining Tanystome of our first division usually have a 
short, wide body, the head applied directly to the thorax, the wings 
distant and the abdomen triangular. Ina word, their general ap- 
pearance is that of our domestic Fly. Their proboscis is frequently 
long. 
Cyrtus, Lat. 
Intermediate between Empis and Bombylius. The wings are in- 
(1) Idem. 
(2) Meig. and Macq. 
(3) Idem. 
(4) Meig. 
(5) Macq. 
Vou. IV.—2G 
