1122 The American Naturalist. [December, 
served many times, and were first described by Lespes particularly. 
The same difference is found among the nympha of Zermes 
lucifugus, which he observed with two different forms in Bordeaux. 
The nymphz of the first form are livelier, thinner, and have 
long and broad wing beginnings quite covering the front part of 
the hinder body. They begin to color the first of May, and 
change themselves into winged animals between the 15th and 
20th of May. 
The nymphz of the second form are more seldom found; they 
are thicker, more clumsy, and have small short wing beginnings 
placed sideways. In February, as Lespes first found them, these 
second nymphas had the same size asthe other (6 to 7 mm.); 
later they become larger (8 to 10 mm.); but the hinder part of 
the body grew considerably, particularly in the females. The 
rear part has grown so fast that the back shields do not continue to 
cover the sides, but become divided on top by a soft skin. With 
this swelling of the hinder body is correspondingly a stronger 
development of the procreative organs. The female nympha 
of the first form had shortly before the last moulting, in each 
ovary, perhaps twelve tubes, of which only two or three con- 
tained unripe eggs. On the contrary, with the nymphae of 
the second form, were found as many as fifty-six tubes in which 
the eggs became visible with older nymphae. Also the male 
.procreative organs were much more developed in the second 
‘form, and the nympha outlive the transformation and the 
swarming of the others, and grew on as nympha. They only 
begin to turn brownish in July, and always become at this time 
more rare. The observations of Lespes unfortunately only 
reached to this season. He supposes that the nymphe of the 
second form change to winged males and females, and swarm 
in August, and that out of them come forth a king and queen. 
While the smaller couples of wingless males and females are 
derived from the nympha of the first form, these he some- 
times found in the nests of Termes lucifugus, and called them 
“little kings and little queens." This conclusion is reached 
only on account of the development of the procreative parts of 
king and queen as compared to those with the nympha of the 
