74 
[June 
The antennae of the female also differs somewhat from the figure 
given by M. Saussure (1. c. pi. iv. fig. 3c.) and Dr. Schaun (1. c. pi. 20. 
f. 7). The basal joint is scarcely half as long, and the knob (or the 5 
apical joints), is much broader, and more of an oval. 
Taking all these differences of structure into consideration, it re¬ 
mains, therefore, a question, whether they are sufficient wherewith to 
establish a separate genus. 
I must say here, that the rough plate accompanying this paper 
should not be taken as being correct in every particular, but will enable 
any one to recognize the species which it represents. Unfortunately it 
was printed off before several corrections were made, which I will men¬ 
tion here, so that no one may be misled. The neuration of the wings 
are not sufficiently correct, particularly in fig. 2. In fig. 1, the antennae 
are rather too long in proportion to the insect, and also in fig. 1 a, the 
first joint of the posterior tarsi should be as long as the tibiae, and 
curved inward. The antennae of the female (fig. 2 b) should have the 
third joint much longer and the basal joint a little shorter. 
Explanation of Plate 4. 
(All the figures are enlarged.) 
I'ig. 
1. 
Masaris vespoides, % 
a 
la. 
ib. 
profile. 
u 
U. 
ib. 
face. 
a 
Ic. 
ib. 
antennae. 
Id. 
ib. 
apex of abdomen 
u 
le. 
ib. 
middle leg. 
u 
2. 
Masaris vespoides, 9 , variety. 
a 
2a. 
ib. 
face. 
a 
26. 
ib. 
antennae. 
