MOSQUITOS OR CULICIDAE OF NEW YORK STATE 255 



paint pot and in association with Culex. We have also taken 

 numbers from a barrel containing spring water, where there was 

 considerable algae or green scum, while we failed to find speci- 

 mens in a large spring within 150 feet, though there was much 

 algae at the sides. We have also taken them beside a stream in 

 a depression among the rocks, where there was considerable algae, 

 a single specimen was met with in a barrel of filthy water, and 

 we have found them abundant in weedy, semistagnant pools 

 beside watercourses. 



Culex pipiens and other semidomesticated species. The adults 

 of these species have somewhat similar habits to those of Ano- 

 pheles, and like them were found by us in unventilated area ways 

 in different sections of Albany. It is probable, as pointed out 

 above, that ventilation would result in many of these mosquitos 

 avoiding such retreats. The larvae, as is well known, are found 

 in multitudes in pails and barrels of standing water, and wherever 

 there are holes in the earth, tin cans and other debris holding 

 water we may expect to find larger or smaller colonies of these 

 insects. Cisterns supposed to be tight frequently produce thou- 

 sands of mosquitos, and they have been detected emerging in con- 

 siderable numbers from sewers. Gutters with deficient fall may 

 harbor millions, and almost any standing water in the vicinity 

 of a house is likely to produce these insects ; one can not look too 

 closely for breeding places. 



Salt marsh and other mild mosquitos. The salt marsh mosquito 

 and its ally, 0. cantator, are the two most important of our 

 wild forms and the ones which cause the most annoyance in the 

 vicinity of seacoasts. These two species breed on the salt 

 marshes, preferably in brackish water, and the work of several 

 investigators has shown that only limited portions of the marshes 

 produce the pest. It has been repeatedly observed after high 

 tides, that the salt marshes along the upland and extending out 

 a distance of 150 to 250 feet, were swarming with larvae. They 

 are largely protected in these places from spraying operations 

 by grass, and it is impossible for fish to get at them. These 

 species breed principally in pools at the head of the marshes to 



