73 PROCEEDINGS OF THE ACADEMY OP [1881. 



Fig. 4. A nest built partly around a tuft of gramma grass, and 

 less conical in shape than the above, 



Plate III. 



Fig. 5. View of honey-bearers as seen in natural site, clinging 

 to the roof of a honey-room. About natural size. Page 22. 



Fig. 6. View of honey -bearers in same position, drawn from 

 one of m}' artificial nests. Mingled with them are seen ordinary 

 workers, and semi-rotunds, or workers apparently in process of 

 transformation into honey-bearers. About natural size. 



Plate IV. 



Fig. 7. Sprig of dwarf oak, Quercus undulata, with galls of 

 Cynips quercus-mellaria, showing the beads of sweet sap. Page 25. 



Fig. 8. The same galls enlarged. 



Fig. 9. Another cluster of the same galls. 



Fig, 10. Section of gall showing the inside cell, c, and the exit 

 hole of .the gall-fly, eh. Page 26. 



Fig. 11. Turk's-head'gall, showing exit-hole, eh. 



Fig. 12. View of inside of a gall, showing a globular cell, and 

 a small grub domiciled against it. Page 27. 



Fig. 13. A honey-bearer clinging by her feet to the wall of a 

 honey-room. Page 22. 



Fig. 14. The crater of a gate to an ant's nest, showing the grav- 

 eled funnel, F, and the smooth nozzle, N. Page 32. 



Fig. 15. Outline of the elevation of a formicary. Page 35. 



Plate V. 



Fig. 16. Double section view of the interior of a nest, drawn 

 from a point in the excavaticm twenty-one inches below the sur- 

 face. Nest made in soft, red sandstone, g, y, g, galleries arranged 

 in stories. R, R, R, vertical sections through hone3^-rooms and 

 chambers for nursery purposes. C, D, E, the floors of a suite of 

 honey-rooms, showing their connection with the general S3'stem. 

 Page 86. 



Fig. 17. The three honey-rooms C, D, E, above referred to, and 

 the indication of a fourth, F. Length of C from a to 6 = 5 inches ; 

 D, from c to d = 3| inches ; E, from e to /i = 4 inches. Eleva- 

 tion of h above x = B^ inches ; of b above e = 6 inches. A little 

 stairway united D with C and F ; g,g, a, gallery. Page 36. 



