Fig, 473. 



Our common bumble-bees. — a, Xylocopa virgmica ; b, Bombus fervidus ; c, B. consimilis ; d, B. 

 virginicus ; e, B. americanorum (queen) ; f, B. fervidus ; g, B. americanorum (worker), to show 

 pollen mass on hind tibia; h, B. vagans ; i, Apathus elatus. All somewhat more than natural 

 size. 



