Bee-like Drone-fly. 



I'i a i i: 33 



Girdled Drone-fly. 



Page 2 48 



These Hies, which have a superficial resemblance to bees and wasps, were held 



formerly to be parasites upon their hosts ; but they arc now known to be beneficent 



scavengers, helping to keep the nest clean. 



Photos by Author. 



