CONSTITUTION AND DEVELOPMENT OF TERMITES. 299 
A nest of Termes contains !— 
I. Very young larve, the head of which is alike in 
those of equal length (PI. 17, fig. 1). 
They include forms from the smallest (scarcely 1 mm. long, 
with antenne of eleven joints, the third bare, the rest pilose) 
(Pl. 17, fig. 1) to those a little over 2 mm. in length (with 
antenne of twelve joints, the third bare, the rest pilose, some- 
times with the fourth bare in one antenna only). Larve 
between these two groups are intermediate in length, and have 
either eleven pilose antennal joints or twelve, the third and 
fourth bare and the rest pilose. There are four Malpighian 
tubules in the smaller larve (Pl. 18, fig. 11), eight (four large 
and four small) in the larger (id., fig. 12). I may add at once 
that the smallest larve possess no parasitic Protozoa. 
II. Examples 2°25 to 3°75 mm. long, with twelve 
entirely hairy,or thirteen antennal joints; some with 
large (Pl. 17, fig. 2), others with small heads (id., fig. 3). 
Those with large heads may be regarded as young 
workers, and may become either adult workers or 
soldiers. 
The smallest members of this group still possess four small 
[secondary] Malpighian tubules, and may be free from Pro- 
tozoa (always from Trichonympha). 
III. Examples with fourteen antennal joints, 3°75 
to 4 mm. in length, with or without very short 
wing-rudiments. 
They fall into the following category : 
A. Forms without a trace of wings, with the head 
relatively large, the abdomen stout and rather short, and 
the colour of the body less conspicuously white (Pl. 17, figs. 
5, 78). These are more or less immature workers, capable of 
becoming adults, or of transforming into soldiers. They are 
derived from either the large- or small-headed forms of the 
preceding stage (11). 
1 As before, I must assume a knowledge in this section of certain experi- 
ments which will be described later. 
