112 MOSQUITOES 



Culex and tcu times with lisli. Dr. F. A. Young, a Brit- 

 isli army sur<:;con, lias told mc that in his experieuce if 

 the larvie of Culex and Anopheles are put into the same 

 vessel those of Anopheles will disappear. 



Lieuteuaut-Colonel Yerbury says that " the natural 

 liome of Anopheles seems to be damp swampy ground, 

 but not necessarily so wet as a marsh or a fen." Grassi 

 and Fiealbi state that A. niacidlpinmh is most frequently 

 found in flat land in Italy, the larvie requiring clear water 

 rich in vegetable food. E. E. Austen found in Freetown 

 that Anopheles larvie were iu stagnant puddles, varying 

 from a foot to several feet, at the sides of the streets, but 

 many were met in the still water in little bays at the side 

 of slowly running shallow ditches. Whether the w'ater 

 was clear or muddy seemed to make no difference, but 

 green algaj were nearly always present and in some pud- 

 dles tadpoles were numerous. Dr. H. A. Veazie, of New 

 Orleans, has found Anopheles larvie in the ponds out in 

 the suburbs iu the swamps back of the city. Dr. Wol- 

 dert, of Philadelphia, has found the larvie of both ^1. ma- 

 carqwnnis w\\i\. A. inuict'ipcnn'is breeding in the same nar- 

 row and slowly flowing stream of fresh water, which 

 drained a marshy district formed by a raih\)ad end)ank- 

 ment. He found larva' in this stream from June lOtli to 

 November 11th and located live localities within the city 

 limits of Philadelphia where Anoi)heles breeds. Grassi, 

 at Metai)onto, Italy, is said to have found Anopheles in 

 brackish water. 



