EXPLANATION OF PLATE IV. 



Fig. 1. — Outline form of female. 



Fig. 2.— Male. 



Fig. 3. — Worker major or soldier. 



Fig. 4. — Worker miuor. 



Fig. 5. — Dwarf. 



Fig. 6. — Enlarged view of the head of the worker and queen, a, 

 section of the terminal part of the antenna of a nymph, enlarged; b, c, 

 antenna of female and worker; d, antenna of male; e, palpi; /, tongue; 

 //, mandible of the female and worker; k, mandible of the male; /«., 

 the eye ; I, ocelli. 



Fig. 7. — Scale : a, of female ; h, of male. 



Fig. 8. — Fore leg : a, of female and worker ; h, of male. The 

 tibial spur is bent upon the fore leg, straight upon the other legs. 



Fig. 9. — Foot, or termination of the tarsal joint: a, of female and 

 worker ; h, of male. 



Fig. 10. — Abdominal plates. 



Fig. IL — Larva of large form, probably of queen or worker major. 



