Prockedings oe Fii^th Annuai. Meeting 105 



trovertible evidence to show a flight of 6,250 feet by Anopheles 

 tarsimaculata and Anopheles albimanus. (The latter is a very 

 important carrier of malaria.) 



Headlee^ has collected evidence to show the movement of the 

 house mosquito {Culex pipiens) from an area of very intense 

 breeding to a point fully 2.5 miles away. 



Table I 

 Data on Mosquito Migration 



Date 



1879 



1884 

 1886 



1903 

 1904 



1904 



1908- 

 1910 



1909 



Investigator 



Mitchell, 



Hetherington, 

 Mitchell, .... 



Russell, 



Smith, ...... 



Carter, 



Mayer, 



Young, ...... 



Place 



Matagorda Bay, 



Ship "Gedney," 



Matagorda Bay, 



Ship "Newark," .... 



New Jersey seacoast 

 and bay coast, 



Gulf of Mexico off 

 Louisiana coast, . . 



Dry Tortugas, 

 Ship "Concho," 



Species 



Unknown, probably 

 salt marsh, 



Unknown, 



Unknown, probably 

 salt marsh, 



An. annulipalpis, . . . 



A. sollicitans, A. 

 cantator, 



Salt Marsh, 



A. niger, Salt Marsh, 

 Unknown, 



No. 



of miles 



50-60 

 27 



50-60 



30-40 



15-18 



40 



60 



Smith^ records that the fresh-water swamp mosquito (Aedes 

 sylvestris) may migrate as far as five miles. In the month of 

 May, 19 1 7, heavy rainfall flooded a large part of the upper 

 Passaic Valley, which contains many thousands of acres of fresh- 

 water swamp land. While the waters were still spread over a 

 large portion of this swampland, Mr. R. W. Gies and Mr. W. V. 

 Becker traversed a large portion of it in a canoe and found very 



•Headlee, Thomas J.. 1917. Some Recent Advances in the Knowledge of 

 the Natural History and Control of Mosquitoes. N. J. Agr. Exp. Sta. Bui. 

 306. 



* Smith, J. B. 1904. Report on Mosquitoes Occurring in the State of New 

 Jersey. N. J. Agr. Exp. Sta. 



8 MOS 



