300 



Margaret Holliday, 



A fact still more surprising- was tlie presence of this gland in 

 connection witli the receptaculum in ten workers. wliicli to all 

 appearauces were otherwise normal, The ovaries in tliese forms 

 were like tliose of the queen with the exception that they varied 

 in the number of tubules; the constancj^ of the queeu, however. is 

 not certain as too few were dissected to determine whether this is 

 the normal condition. The ovaries of these workers have from three 

 to eight tubules on each side (Fig. B b). 



The ovaries of the ordinär}^ workers also, that is, tliose Avithout 

 the receptaculum. were well developed and contained egg's. Quite 

 a number had mature eggs in them, one to a tubule. The tubules 

 varied from two to eight. with great variet}^ between these limits 

 (Fig. Bc). The Variation in the several forms is as follows: 



Form 



Xo. of ovaries 



No. of tubules on 

 each side 



Here also every worker dissected did not have ovaries large 

 enough to be distinguished. In the forms coUected in the spring 

 the majority had them sufficiently large to be detected. in the winter 

 a greater number did not, as would be expected. 



The results of this study, viz. the discovery of the receptaculum 

 in the ovaries of forms other than queens naturally brought up the 

 question whether such conditions are anomalies. occurring in suoli 

 ants as the Ponerinae. where the morphological distinction between 

 the queen and worker is very slight, or whether like conditions 

 exist also in species where the morphological distinction between 

 the queen and Avorker is great. 



