< B. THOMPSON AND T. E. SNYDER. 



DESCRIPTION OF PLATES. 



FIGS. 6-9 are photographs of sections of the abdomens of termite queens. Figs. 

 10-12 are photomicrographs of the same sections made by John H. Paine, of the 

 Bureau of Entomology. Figs. 13-15 are photographs of the living insects. 



EXPLANATION OF PLATE i. 



FIG. 6. Reticiditermes flavipes. Photograph of a section of part of the abdomen 

 of a mature first form queen, showing that the relative extent of the ovarian tubes 

 is greater than in either of the other reproductive castes. X 20. 



FIG. 7. Reticiditermes flavipes. Photograph of a section of the abdomen of 

 mature queen of the second form. A portion of the oviduct is seen with the egg 

 tubes opening into it laterally. X 20. 



FIG. 8. Reticiditermes flavipes. Photograph of a portion of a section of the 

 abdomen of a mature queen. The extent of the egg tubes is less than in the other 

 two forms, but the ova shown happen to be of the oldest stage and are therefore 

 larger. X 20. 



FIG. 9. Eutermes morio. Photograph of a section of the abdomen of a mature 

 queen of the first form, showing the enormous extent of the egg tubes and the 

 varying sizes of the ova. X 20. 



