Vor. II, Part IT] WILLIAMS—BEES AND WASPS a7) 
cantharid beetle to the number of over 100 clustered about 
the wing bases of this bee from South Seymour Island. This 
observation induced me to examine the 1905-1906 Xylocopa 
colona more carefully and one male from Post Office Bay, 
Charles Island, was found harboring nine or ten of these small 
parasitic beetle larve. 
Mites or Acari, sometimes in quantity may be present on 
these Galapagos bees. 
