SOME OTHER FLIES 25 



bodies of living animals ; and the perfect insect, strange 

 to say, is absolutely destitute of a mouth opening. 

 Much misrepresentation has been prevalent, based 

 entirely upon surmise, connecting "myiasis" in man- 

 kind, which is various but very rare, with the common 

 infliction of horses and horned cattle with CEstrid 

 maggots. Myiasis is the medical term given to all the 

 various forms of animal infliction by internal parasitic 

 maggots, and this subject is reserved for discussion in 

 the next chapter. 



The characteristics and natures of the very numerous 

 tribes and families of other kinds of flies will be found 

 summarised in the Appendix of this booklet. 



