368 BOTANICAL GAZETTE [NOVEMBER 
“The most important deduction to be drawn from them is, that in 
general anthophilous insects are not limited by hereditary instinct to 
certain flowers, but that they wander about getting their food on what- 
ever flowers they find it. For if each insect had its own species of 
flower, as most caterpillars have their own particular food plant, the 
abundance of insect visits to the plant would not depend at all upon 
its conspicuousness.” Then, after mentioning the case of Andrena 
florea and Bryonia dioica, etc., he says: “ But these insects do not 
form 1 per cent. of all the species that I have observed, and even of 
these cases the restriction is only complete in two.” 
In my neighborhood, excluding the inquilines, which do not make 
nests, 30 per cent. of the bees are oligotropic.— CHARLES ROBERTSON, 
Carlinville, Ill. 
