IMMATl KK WASPS IN TIIEIK CKIJ.S 



When a crop of neuters or workers has been i)roduccd in the wasp nest, tliesc begin to cxi^and 

 the size of the nest, while the original female or queen continues to lay eggs. The voung 

 larvae, in the stage shown at the left of the photograjih above, are fed by the workers; 

 later they go through a c|uiet period of pupation, as shown at the right, after which they 

 issue forth to take uj) the work of the colony. All these neuters (functionlcss females) 

 are produced by fertilized eggs: they receive an inheritance from two parents. The 

 fact that they are sexually functionlcss is apparently due to a lack of something in their 

 food. Photograph by Brown and Dawson. (Fig. 22.) 



