46 THE MOSQUITOES OF NEW JERSEY 



ture. August 10, again covered the eggs in the fresh water jar with 

 water of the same kind and wrigglers hatched at once. The same experi- 

 ence resulted with the other jars, tending to show that the eggs must 

 be at least partially exposed before they hatch. Eggs of this series that 

 had been kept nearly dry since they were laid, were covered with water 

 at 3 :35 p.m., August 8, at 4t :08 p.m. wrigglers had begun to emerge. 

 August 13, tested jar four in which the sod was completely dry and 

 found the eggs hatching after one and one-half hours. August 15, 

 poured water over the entire sod and wrigglers began to appear in 

 three minutes ! Adults from this lot were obtained August 24. Septem- 

 ber 23, some eggs of this series that had been kept in a damp closet 

 since laid, were covered with water and hatched within an hour after- 

 ward. 



August 4, the third series of experiments was started and a dozen 

 jars were stocked, each with ten gravid females. In the jars which con- 

 tained only dry lint no eggs had been laid up to August 6, when the jars 

 were brought indoors. August 8, the eggs in the jars in which the lint 

 had been allowed to get perfectly dry after the insects had oviposited 

 were found collapsed. At noon, August 8, put water into jars seven and 

 eight, and at 3:00 p.m. wrigglers were present. These jars were put out 

 in the marsh August 12, and some ditch water was added. August 15, 

 put the young larvae into a small artificial pond and re-covered the sod 

 with marsh water. On the nineteenth, there was another lot of young 

 larvae in the jars, while those in the small pond were approaching 

 pupation. August 11, added water to another jar of this series and on 

 the twelfth, larvae were found. On the twenty-fifth, there was a fresh 

 hatching from this series, and this left some eggs still in good condition. 



The fourth series was started August 14, twelve or more gravid 

 specimens being confined in each of twelve jars containing as follows: 

 number one, dry sand; number two, wet sand; number three, dry lint; 

 number four, wet lint ; numbers five to twelve inclusive, ordinary upland 

 soil over moist lint. Not all the specimens had laid eggs on the fifteenth, 

 and some were yet alive on the nineteenth. In jar four the lint was so 

 saturated that the water just failed of flowing it and here the insects 

 were tempted to lay eggs on the sides of the jar an inch above the wet 

 bottom. August 19, the eggs in jar number eight, were covered with 

 water, but no larvae hatched from this series. Some of the eggs in jar 

 four became covered with water September 1 and hatched. September 5, 

 another lot was covered and also hatched. Some of the eggs were covered 

 with water soon after they were laid and were kept covered until Sep- 

 tember 5 when, no larvae having hatched, the water was poured off and 



