474 ANNUAL EEPORT SMITHSONIAN INSTITUTION, 1912. 



Plate 2. 



Fig. 5. a. Formicafusca L., small queen; 



b. Formica exsecta Nyl., winged female (4 : 1). 

 Fig. 7. a. Head of Formica sanguinea Ltr., worker; 



b. Head of Polyergus rufescens Ltr., worker (6 : 1). 

 Fig. 8. Polyergus riif escens Latr. (Xmazonani): a. Ergatoid queen; b. Worker (4:1). 



Plate 3. 



Fig. 9. a. Harpagoxenus (Tomognathus) sublaevis 'Nyl., ergatoid queen; 



b. Leptothorax acervorum F., worker (slave) (5 : 1). 

 Fig. 10. Strongylognathus testaceus Schenk, worker (12 : 1). 



Fig. 11. Wheeleriella Santschii Forel, winged female, dorsal and lateral view (5 : 1). 

 Fig. 12. Anergates atratulus Schenk, pupa-like male (12 : 1). 

 Fig. 14. Larva of Lomechusa strumosa F. (5 : 1). 



Plate 4. 



Fig. 13. Lomechusa strumosa ¥. (5:1): 



a . With turned up abdomen ; 



b. With extended abdomen, to show the yellow hair-tufts. 



Fig. 15. Atemeles pratensoides Wasm. being fed by Formica pratensis Deg. (6 : 1). 

 Fig. 16. Xenodusa cava Lee. (North America) (5 : 1). 

 Fig. 17. a. Formica sanguinea Ltr., worker (4 : 1). 



Plate 5. 



Fig. 176. Formica sanguinea Ltr. (Pseudogyne) (4 : 1). 



Fig. 18. Miroclaviger cervicornis Wasm., Aladagascar (12 : 1). 



Fig. 19. Pleuropterus Dolirni Rits. subsp. Lujae Wasm., Congo (5 : 1). 



Fig. 20. Paussus Tiowa Dohrn Madagascar (5:1). 



Plate 6. 



Fig. 21. Section thi-ough the layer of glandular cells of the antennal cup of Paussus 

 cucullatu^ ^Yestw . (1000 : 1). (Zeiss, Apochrom. 2.0, 1.30, compensational 

 ocular 4.) 



Fig. 22. Fungus gai'den of Microtermes globicola Wasm., Ceylon (1, 5 : 1). 



Plate 7. 



Fig. 23. Anomma Wilverthi Em., three workers from the same army (3 : 1), Congo. 

 Fig. 24. Sympolemon anommatis Wasm., Congo (6 : 1). 



Fig. 25. Sagittal section through the abdomen of Sympolemon anommatis, to show 

 the bundles of muscles (20 : 1). 



Plate 8. 



Fig. 26. Mimeciton pulex Wasm., male and female, Brazil (10 : 1). 



Fig. 27. Dorylomimus Kohli Wasm., Congo (8 : 1). 



Fig. 27a. Mimanommxi spectrum Wasm., Kamerun (9 : 1). 



Fig. 28. Ecitophya simulans Wasm., Brazil (4 : 1). 



Fig. 29. Xenocephalus gigas Wasm., Brazil (4 : 1). 



Fig. 30. Trilohitideus insignis Wasm., Congo (11 : 1). 



Plate 9. 

 Fig. 31. Gigantic nest of Formica rufa L., Luxemburg (17 m. circumference). 



Plate 10. 

 Fig. 32. Carton nest of Cremastogaster Stadelmanni subsp. doHchocephala Santschi 



(hanging on the tree), Congo (1 : 44). 

 Fig. 33. Web nest of Polyrhachis laboriosa Sm., Congo (1 : 2). 



