DIPTERA. 297 
In the following subgenus, or 
Meranornora, Meig. 
Which he suppresses and unites to Zuachina, the antenne are 
much shorter, their extremity, when they are inclined, scarcely ex- 
tending beyond half the length of the face of the head. The most 
exterior of the two complete cells, which terminate the wing, is 
much more prolonged posteriorly than the other, and the internal 
angle of its extremity is obtuse(1). 
The abdomen of the other Creophile is but slightly elongated 
and triangular; the wings do not vibrate. 
Puanta, Meig. 
Where the posterior extremity of the abdomen is elongated, nar- 
rowed and ,bent underneath. The third joint of the antennz is 
elongated and linear. The wings, according to the figures of Meigen, 
closely resemble those of the preceding subgenus. According to 
the same author, the abdomen, as in the Lophosiz and Ocyptere, 
presents but four apparent annuli(2). In the subgenus 
Y 
Xysta, Meig. 
There are from five to six. The antenne are short, and their 
two last joints nearly of an equal length. The posterior tibiz are 
slightly arcuated, compressed and ciliated. 
This subgenus appears to us to constitute the transition from 
the Gymnosom'z to the Phasiz, and also to approach the Trichi- 
opoda. The equivocal nature of the character drawn from the 
presence or absence of hairs on the face of the head, employed by 
M, Meigen, is easily perceived. Certain species of Trichiopoda are 
ambiguous in this very respect(3). 
Taouina, Fab. Meig. 
Where the abdomen is not curved underneath at its posterior ex- 
(1) Lat., Gener., Crust. et Insect., IV, 346. 
(2) See Meigen. 
(3) Idem. 
Vou. IV.—2 N 
