REPORT OX MOSQUITOES. 349 



mine that instead of Ciilex plpiens we had a new species to deal 

 with ; one which wiU have to descend to posterity as a member 

 of the Smith family, unless perchance it proves to have been pre- 

 viously described. 



Mr. Brakeley kept a duplicate series of specimens under obser- 

 vation at Lahaway, and his first pupa, from larv?e thawed out of 

 ice February 17th, was obtained April i6th, and became adult 

 on the 26th. This gives a period of fifty-eight days in active 

 larval life, at an ordinary indoor temperature, or sixty-eight days 

 if the pupal period is counted. Other pupse and adults developed 

 and the pupal period ranged between ten and twelve days. A 

 small lot of specimens gathered April 7th began pupating May 

 I St, and these had an average pupal period of eight days. 



Altogether Mr. Brakeley sent me, prior to May ist, some fif- 

 teen to twenty lots of larvae, numbering many hundreds of speci- 

 mens. All these were kept in the original pitcher leaf water 

 and this never became foul. It required the contents of from 

 forty to seventy-five pitchers to make a full pint of licpid, and 

 the larvae numbered from two to twenty or more in each leaf. 

 Culture after culture was closed out during the summer ; but 

 though the conditions for all the larvae in a single jar were abso- 

 lutely the same, the rate of development varied in each individual. 

 One quart jar, containing nearly 200 larvae, received in early 

 March, developed adults throughout the summer, and this was 

 not closed out until September 13, 1901, six months after its 

 receipt, when there were yet a few larvae, two or three pupae and 

 one or two adults ! These larvae had been surely hatched in 

 November, 1900, and had remained in that condition for cer- 

 tainly ten months, including the entire summer. 



May 31, June i and 2, were spent at Lahaway with ]\lr. Brake- 

 ley, and during those days the swamps for some distance around 

 were visited and dozens of pitcher plants closely examined. 



In the areas flooded during the winter by cranberry bog 

 operations, no larvae were found ; but as soon as the flood line 

 was passed, larvae were taken ; generally half a dozen or more to 

 a leaf. But none occurred except in the leaves. This point was 

 tested very thoroughly throughout the season and it is abso- 

 lutely certain that this little species does not occur anywhere out- 

 side of the receptacles formed by Sarraccnia, except by accident. 

 In the colder, shaded parts of the swamp, where springs occurred, 

 larvae only were found. In the warmer areas pupae were com- 

 mon and. in some places, where water and moss surrounding 

 the plant were actually tepid, the insects had already emerged 

 and nothing but empty pupa shells could be found. It seems to 

 be entirely a matter of temperature, and in some of the coldest 



