NATURAL GROUPING OF BREMID.E. 



399 



into a special waxen cell they had constructed, like terrestris, 

 on the top of some cocoons. Also a colony of B. hortoruiu, 

 another pocket-maker, being in an advanced stage, and having no 

 growing larvae, placed pollen in the cocoons vacated by the 

 young queens, but only lined the interior of the cocoons with it." 





Fig. 1 



FIG. i. Comb of Bremus fervidus with five pollen bowls on the lower half of the 

 periphery. Natural size. 



In this connection the present writer would like to call at- 

 tention to the fact that Bremus americanornm (cf. Franklin, 

 'i2/'i3 p. 405) and Bremus fervidus, two of our American Pocket- 



