FAMILY ACANTHOMERID^ 



This is a small and relatively unimportant family of flies of 

 which but a single genus and half a dozen species are represented 

 in North America and all of these are southern forms. They 

 include some of the largest flies known and resemble the gad- 

 flies and bot-flies more than the flies of any other family in 

 general appearance. 



'30 



