3H 



BOTANICAL GAZETTE 



[APRIL 



prefer are not the simple ones, but the majority are social and 



have epigynous nectaries. 



The original or normal bees are poly lee tic. They have a 

 general relation to the flora and more special relations to certain 



flower classes. 



From these have originated the oligolectic bees and 



inquilines. The oligoleges collect pollen exclusively from flowers 

 belonging to particular natural groups. They do not prefer flower 

 classes except in so far as their particular flowers happen to belong 

 to those classes. The inquiline bees live in the nests and at the 

 expense of the other bees. They get only nectar from the flowers 

 which happen to be the most convenient and easiest for them to 

 visit. The importance to the flora of these 3 sets of bees is partly 

 indicated in table III. 



TABLE III 



In a considerable number of polyleges the flight of the males 

 is quite different from that of the females. The males do not 

 make half as many visits as the females, and the flowers which they 

 visit are so different that their visits to flowers should be considered 

 separately. Table IV shows the differences. 





TABLE IV 











Females (£ excluded) 





Males 







Number 



Visits 



Average 



Number 



Visits 



Average 



Large polyleges 



So 

 72 



1239 

 2098 



24.6 

 29.1 



5° 

 64 



114 



806 

 722 



16. 1 



Small polyleges 



II. 2 





■"■' 



Total 



122 



3337 



273 



1528 



133 





1 



groups of visitors preferring certain 



flowers are separated as shown in table V. Usually large flowers 



