318 B. GRASSI AND A. SANDIAS. 
Fig. 5.—Diagram of a similar but large-headed larva. The hair-lines 
between 2 and 3, and between 4 and 5, apply to each of the two figures. 
Fic. 6.—Larva similar to 4, but larger and with wing-rudiments. 
Fie. 7.—Larva similar to 5, but equal in size to that of Fig. 6. 
Fie. 8.—Anterior portion of a larva similar to that of Fig. 7, but with a 
somewhat larger head ; probably a soldier larva. 
Fic. 9.—Larva, with fifteen joints; the third alone not pilose, and with 
evident wing-rudiments. 
Fie. 10.—Nymph, with long wing-pads. 
Fic. 11.—Fully winged perfect insect. 
Fic. 12.—Perfect insect after shedding the wings. 
Fic. 18.—Adult worker. 
Fig, 14.—Soldier. 
Fic. 15.—Young wingless substitute queen. 
Fie. 16.—Old wingless complementary queen. 
Fic. 17.—Old complementary queen, with slight rudiments of wings. 
Fig. 18.—The same, with more distinct rudiments. 
Fie. 19.—Male nymph of the second form (March Ist). 
Fic. 20. —Outline of a male nymph of the second form (April 11th). 
Fig. 21.—Young complementary queen, derived from a nymph of the second 
form. 
Fie. 22.—Thorax of a nymph of the second form, with the wings more 
developed than those of the example in Fig. 21. 
Fie. 23.—Substitute queen, derived from a nymph of the first form. 
Fic. 24.—Substitute queen, derived from a perfect insect; partly infuscate, 
and with the wings torn (the infuscation is not shown). 
Fic. 25.—Posterior extremity of a very old substitute queen, without sign 
of wings. 
Figs. 1 to 25 are all drawn by the camera lucida to an equal scale, with 
exception of Figs. 16, 17, and 21, which are somewhat more enlarged. 
Fic. 26.—Pronotum of a worker. 3, 4, Kor. 
Fic. 27.—Pronotum of a completely wingless substitute queen. 3, 4, Kor. 
Fic. 28.—Antenna of a nymph of the second form. 3, 4, Kor. 
Fic. 29.—Antenna of a complementary queen. 3, 4, Kor. 
Fic. 30.—Base of a twelve-jointed antenna. 
Fie. 31.—Base of a thirteen-jointed antenna. 
Fig. 32.—Base of a fourteen-jointed antenna. 
Fic. 33.—Base of a fifteen-jointed antenna. 
