246 



THE MOSQUITOES OF NEW JERSEY 



* In parentheses organisms other than protozoa. 



smell of hydrogen sulfide was noticeable, indicating sulfate reduction 

 by bacterial action. It has been stated by some investigators that HoS 

 is very toxic to larvae but we know that this does not always hold for 

 salt water species. Frequently I have taken larvae from ditches emanat- 

 ing a strong odor of H2S and I have no doubt that the inspectors have 



