OF WASHINGTON. 73 
veloped. In Gyrolasia they are very long. In the great major- 
ity of case's the wings are clear and transparent. In many genera, 
particularly with the females, they are clouded in patches. I 
have seen but one species the wings of which are entirely clouded. 
It is allied to Smicra and is from Brazil. 
77ie legs. As a general thing the legs are rather slender and 
increase in length and size from before backwards. With the 
Encyrtince and Ezipelmince, however, the middle legs are the 
longest and strongest, the hind legs ranking next. With Homa- 
lotylus the middle legs are particularly long. With the Chalcid- 
ince the hind femora are greatly enlarged and are usually (ex- 
cept with Haltichella} toothed along the ventral edge. These 
huge femora are of positive inconvenience to the insects in loco- 
motion and are not, as some authors state, t; leaping legs." The 
coxae are free and the trochanters are apparently i -jointed. The 
front femora are often somewhat swollen in the middle and are 
furnished with a curved spur at tip. The tibiae of the other legs 
are generally of uniform width and are ordinarily provided with a 
single straight spur at tip, but sometimes have two. With the 
Encyrtince and Eupelmince the middle tibiae are lengthened and 
widened at tip and the apical end is greatly enlarged and more or 
less toothed or serrate along its tarsal edge. With Euplectrus there 
are two very long hind tibial spurs. The tarsi are 3-, 4-, or 5- 
jointed, and the groups Trimera, Tetramera, and Pentamera 
were founded on this peculiarity. The Tetracampince have fe- 
males with five joints, and males with four, and upon this sub- 
family Reinhart founded the group Alloemera. With the Pen- 
tamera the first four joints diminish in length, the fourth being 
smallest and considerably shorter than the terminal joint which 
is furnished with two claws and a central pulvillus. The first tar- 
sal joint of the middle legs becomes strangely modified with the 
Eupelmince, less so with the Encyrtince, and still less so with 
the Aphelinince. With the first-mentioned group it is swollen 
vertically and is furnished alojig its ventral edge with a strong 
comb of chitinous teeth, represented in the other subfamilies by 
simple bristles. 
The Abdomen. 
The abdomen varies greatly in shape and relative size. Two 
extremes in shape are Omphale, in which it is very long and 
