Hagen.]  . 122 [December 27, 
a soup-dish, in the middle of this shallow funnel is-a tube of smaller 
diameter going through the yolk-membrane in the direction of the 
ege-pole. These micropyli recall somewhat those of some Orthoptera, 
especially of Oedipoda. 
The spermatozoa of the white ants are not yet known. The 
genitals of the mature male ants when swarming are still in a very 
imperfect state of developement, the testicula measuring only 3 mm. 
in diameter. For this reason the swarming white ants were formerly 
supposed by Guérin to be sterile forms. Copulation in the time 
of swarming outside the nest is therefore not very probable. It is 
sure that in swarming a kind of courtship so to speak takes place, 
as one always finds (this is the case with 7. flavipes) a pair running 
together, the male having caught the female abdomen with its 
mandibles. The development of the male genitalia begins later, 
with the swelling of the abdomen, and these males commonly called 
kings, are the only formsein which the testiculi had been observed 
in 1850 by myself. 
Dr. Fritz Miiller says concerning the spermatozoa that the 
Termes do not possess the filiform kind of other insects, and that he 
has found in the testiculi of the mature kings of several species pale 
rounded bodies, some larger, (0.008 mm. diam. in Eutermes vernalis) 
seemingly without nucleus and without enveloping membrane, which 
swell in water twice their size; or smaller bodies 0.002 mm. diam., 
strongly refracting light. The first he presumes to be the fructifying 
parts of the sperma, but they are so pale and their form so little 
defined, that he could not say whether they were to be found in the 
winged males, nor could he find them in the vesicula seminalis of 
the queen or those of the winged females. In the winged males of 
the Eutermes which build the ‘ negro-head’ tree nests they were 
probably still enclosed in cells. 
I have been able, however, in some eggs to see distinctly a bunch 
of filiform spermatozoa inside the micropyle, and in one case I was 
able by pressure to bring them out in the same manner as described 
by Leuckart for the pupipara. Perhaps they are developed only 
very late. 
The yolk-membrane is very often separated from the chorion, 
even evaginating through places where the chorion is broken. Very 
often the yolk-membrane shows a series of transverse folds, at 
regular intervals, perhaps the effect of tbe alcohol. The yolk is 
composed of very large globular cells. I have found in other eggs 
