QG2 NEW JKKSEY AGRICULTTTKAL COLLEGE 



lections of mosquitos. The locality was carefully exainine<l iif 

 31 ay Ivofore tlio first adults a]i]3oared and several rimes later in tlier 

 snnniK'r, but notliino' in the way of a mosqnito larva was taken. 

 On August 2Ttli female adults in a very fresh condition were taken 

 in the Great Piece meadows. They were most abundant around u 

 sliallow body of water in the midst of a piece of dense woodland, 

 and they diminished in numbers the farther away one went from 

 the pool, thus it seems probable that they bred in that body of water^ 

 even though at the time neither larvge nor pupal skins could be 

 found upon close examination. About thirty adults were taken 

 alive and confined in breeding cages. They took blood readily, l)ut 

 one aftCT another died oif, until on September 8th there was but a 

 single example left. Many of the dead ones had fully dcAxdoped 

 ovaries. On Septendjer lOtli an egg-boat was found floating uj^wn 

 the water, laid by the last surviving female. The eggs hatched 

 on the night of Septeml>er 12th, and the young larvte were trans- 

 ferred to strained water in which Culex pipicns had been breeding 

 and into which pieces of stonei, sod and decayed wood were placed 

 in the hop© that the larvae would find in such a, mixture some con- 

 dition under whicli they might exist. Watched for several hours 

 the larvaB rarelv came to the surface, and onlv occasionally one or 

 Two Avere seen resting at the surface film. Xoue lived more than 

 six days, having apparently eaten nothing. The question still 

 remains, therefore, as to just what the food of this larva is anrl 

 under what conditions it lives. It has been suggested that they 

 miglit be parasites, and this seems probable. 



The egg-boat (Figure 8, 1) is quite similar to lliat of Culex 

 inpiens, but is slightly larger, measuring 4.5 mm. .it its greatest 

 length and 2 mm. at its greatest width. It consisted of ap]iroxi- 

 mately 125 eggs, the individual egg being uniformly slaty-black in 

 color, .75 mm. in height, broadest near the base and tapering regu- 

 larly to a rounded apex. On account of the single eggs being 

 longitudinally fastened together side by side and ta]iering apically. 

 the top of the boat is very nnu'h smaller than bottom; indeed, 

 some of the outside eggs are in an almost horizontal position. 



The young larva (Figu.ve 8, 2) is almost white in color and meas- 

 ures 1.5 mm., or .06 of an inch, in length from the head to the end 

 of the ninth abdominal segment. The head is of the same color as 

 the bodv, somewhat hi-oader than lona\ well rounded in front, and 



