260 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



them reached the town perhaps a mile awa}-. They continued to re- 

 produce until cold weather. 



Mr. Franklin Sherman, Jr.: It may be of interest to note that 

 at Raleigh, N. C, during the past summer we have found quite 

 abundantly what seems to be the yellow fever mosquito. 



President P. J. Parrott: I will now call for the paper by Dr. T. 

 J, Headlee, entitled "Anti-Mosquito Work in New Jersey." 



ANTI-MOSQUITO WORK IN NEW JERSEY 



By Thomas J. Headlee, Ph. D., New Brunswick, N. J. 



About fourteen years ago the late Dr. John B. Smith began seriously 

 to study the mosquitoes of New Jersey for the purpose of finding out 

 how they might be brought under control. He soon developed the 

 fact that New Jersey, in addition to the fresh water breeding species 

 common to other states, had certain species which, breeding in the 

 brackish waters of the salt marshes, habitually flew and were wind- 

 carried many miles inland. All told he found 35 species of fresh water 

 breeding mosquitoes and 5 species of brackish water breeders. 



Salt Marsh Work 



Of the species of salt marsh mosquito recognized by Doctor Smith, 

 Aedes cantator Coq., and Aedes sollicitans Wlk., are really very impor- 

 tant. The former is especially abundant in North Jersey during the 

 early part of the season and the latter characteristic of South Jersey 

 and of the later season broods in the north. 



These two species were found to oviposit in damp mud- and the eggs 

 to remain viable for long periods. Not more than 95 per cent of the 

 eggs laid during any one season hatch during that season; at least 

 5 per cent wintering over. In this way the mosquito-infested salt 

 marshes are always abundantly stocked with eggs. Apparently eggs 

 are always ready to hatch for in a few hours after the pools have been 

 filled tiny Avrigglers make their appearance. About eight days of 

 warm weather are sufficient to transform to pupae and the pupa? 

 to give up broods of blood-thirsty adults. 



Before their breeding grounds were interfered with these two species 

 covered at times a band of shore hne about forty miles wide extending 

 from Jersey City down along the coast and around Cape May to and 

 including a considerable part of Salem County. A small area of 

 shore in Monmouth County has always been sufficiently distant 

 from mosquito-breeding marshes to be practically free from mosqui- 

 toes, and that part of the coastal strip exposed to strong breezes from 

 the sea has been practically free except when the wind blew from the 

 land. 



