through a thio ether, then the over-all reaction could be considered in 
two parts: 
Enz -S + F-CH, COO” - Enz—-S—CH, C00” 4 a 
Enz-S-CH,COO- + OH” + HOCH, COO + Enz-S_ 
2 
(557, 558). 
Fluoroacetanilides 
Studies indicated that monofluoroacetanilides were hydrolyzed in 
insects, as in warm blooded animals, to yield the corresponding anilines 
and monofluoroacetic acid. As in warm blooded animals, citrate accumu- 
lation was observed in treated insects. Although the mechanism of 
poisoning was the same in both species, their respective hydrolyzing 
enzymes were different. The insect enzymes were not so readily inhibited 
by dipterex and triphenylphosphate (known to be specific inhibitors of 
the enzyme in warm blooded animals (23). 
212 
