306 B. GRASSI AND A. SANDIAS. 
b 
his ““nymphs of the second form,” are further characterised 
by the bulkier and more ovoid abdomen. The eyes of the 
latter group begin to become pigmented and prominent, and 
their ocelli are visible. Their antennz are intact, and the 
hairs resemble those of the nymphs of the first form. 
These nymphs of the second form become complementary 
royal forms by a moult in which they acquire the characteristic 
direction of the abdominal hairs and, if of female sex, lose the 
female genital appendices. 
They exhibit a marked development of the genital organs 
which will be subsequently described. 
In the examples, previously mentioned, of which the head 
begins to enlarge, much the same development of the man- 
dibles and maxille takes place as in Calotermes flavi- 
collis. 
With respect to the general colour of the inmates of the 
colony, I should add that the workers are normally dirty white 
or yellowish, and the soldiers more distinctly yellow ; freshly 
moulted or very small specimens, and most undifferentiated 
forms, or those destined for sexual maturity, are pure white. 
The legs are alike in all the forms; the anterior tibiz 
possess three, the others two apical spines. 
Adult and fully winged examples exhibit the well-known 
sexual differences of the seventh, eighth, and ninth abdominal 
sternites, viz.—1. The seventh (the apparent sixth) is strongly 
developed and semicircular (with the rounded edge posterior in 
the female), very short in the male. 2. The eighth is reduced 
to two lateral lobes in the female, and is small and entire in 
the male. 38. The ninth nearly resembles the eighth. A 
similar disposition is found in the mature substitute and com- 
plementary forms. As in Calotermes, the ecdyses are rather 
numerous in Termes lucifugus, and do not bear the sup- 
posed relation to the increase in the number of antennal joints. 
