EXPERIMENT STATIOX EEPOET. 661 



eggs hatch and the hirva? develop verv evenly. Many adults of both 

 sexes were confined in Ijrecding cages, one lot being fed only on 

 ripe l)anana, the other exclusively on human blood. The latter 

 tijok blood readily and gorged themselves so as to be utterly unable 

 t<:) take wing from a flat horizontal surface, though from a vertical 

 surface they could fly short distances either higher or low^er than 

 the starting point, the tendency being to go downward. On a flat 

 surface they could only hop about in a very comical manner. Of 

 the examples fed on banana, none lived above seven days, and of 

 the blood feeders only two were alive August 0th, where one: laid 

 eighteen eggs upon the dampened lint, which was supposed to take 

 the place of mud. They were laid singly, simliar to the manner in 

 which Culex sollicitans lays her eggs; they were also of the same 

 shape as those of that species but slightly larger. They were evi- 

 <lently not fecundated and failed to hatch whether covered imme- 

 diately with water or left to dry out for several days before being 

 water covered. 



Cidex discolor, tliough sent in from Delair by Mv. Seal every 

 year since he first discovered it, is nr)t as yet known to occur in anv 

 other part of IsTew Jersey. A lot of full-grown larva? were col- 

 lected August 10th; on the 11th seven examples pupated which 

 ])roduced adults — all males — on the loth. The remaining larva? 

 failed to pupate and grew more and more sluggish until their death 

 — the last living until the 31st. 



Cidex perturhaois as a larva remains unknown in nature though 

 the young larvse have been hatched during the past summer from 

 eggs laid by a, captive fennile. Though we have not succeeded in 

 bringing the larva? to maturity and thus establishing the character 

 of their food, we nevertheless believe that we have taken a long 

 step toward the final discovery of these early stages in a state of 

 nature. The first record for pertiirhans in 1906 came from Mr. 

 Brakeley, who found fenuilos sparingly at Lahaway in the last 

 week of May. On June 8th he caught a male, the second example 

 of that sex taken by him. From that date on the species became 

 more common, but no more males were among the cajitures. Lake- 

 hurst, with its numerous creeks which flow through and spread over 

 large and low-lying cedar and other woodland areas, represents 

 ■conditions in which no known mosquito larvse breed, and was care- 

 fully investiffated for the larva that never occurred with other col- 



