41 
Tue Fry. Its Characters.—In the female, (fig. 3,) the head is 
flattened globular, and black throughout. The antenne (fig. e,) 
are about half as long as the body, and composed of sixteen 
joints, each of a cylindric-oval form, the length being about dou- 
ble the diameter; each joint is clothed with a number of hairs, of 
which those towards its base are slightly more robust and longer, 
about equalling the joint in their length, and surrounding it in a 
whirl. The joints are separated from each other by very short 
translucent filaments, having a diameter about a third as great as 
the joints themselves. The terminal joint is at least a third longer 
than the preceding ones. The two basal joints of each antenna 
are globular, and compact or not separated by an intervening fil- 
ament, and exceed the following joints in diameter. The palpi 
(fig. f,) consists of three obvious joints, clothed with very short 
minute hairs. The two last joints are cylindrical, nearly equal 
in size, and about twice as long as broad: the basal joint is more 
short and thick. The ¢horaz is oval, broadest immediately back 
of the wing-sockets, and black. The scutel is of the same color, 
projecting, and slightly polished, with the suture surrounding it 
sometimes fulvous. The poisers are dusky. The abdomen is 
elongate-ovate, its broadest part scarcely equalling the thorax in 
diameter; it is of a black color above, more or less widely mark- 
ed at the sutures with tawny-fulvous, and furnished with numerous 
fine blackish hairs. The ovtpositor is rose-red, and slightly ex- 
serted commonly in the dead specimen; it is susceptible of being 
protruded to a third of the length of the abdomen. The wings 
are slightly dusky, and fulvous at their insertion into the thorax. 
Their form and neuration is identical with that of the other spe~ 
cies of this genus, except that the slight connecting nerve between. 
the mediastinal and postcostal is commonly wanting, and the me- 
dial and forks of the anal nerves are extremely faint for a spe- 
cies of Cecidomyia so large as this. The legs are pallid-brown, 
the tarsi black, the femurs paler at their bases. The several pairs 
of legs equal each other in length, being about 0.24 long when 
extended, of which length the tarsus embraces one-half. The 
several joints of the tarsus are of the same relative length asin 
6 
