THE INSECTS OF NEW JERSEY. 721 



prefer the more permanent bodies of water, but they are occasionally 

 found in puddles and rarely in rain barrels. 



C. saxatilis Gross. Larvee occurred in a rock-bottomed pool on the Gar- 

 ret Mt., Paterson, Aug. 31, and adults emerged the same day and 

 the one following; it has not been met with since. 



C. melanurus Coq. The larvae breed and winter in cold spring pools in 

 Sphagnum swamps, among the bottom material. They have also 

 been found in early August with the egg boat and may breed all 

 summer. Thus far found only at Lahaway. 



COQUILLETTIDIA Dyar. 



C. perturbans Wlk. Local throughout the State and sometimes very com- 

 mon. Adults appear in May and continue into September. Eggs are 

 laid in rafts in overgrown swamps, and the larvae work into the bot- 

 tom mud, attach themselves to grass roots, and there remain until 

 the following year. Larval growth is very slow, and the adult is very 

 long lived and a fierce biter. It comes freely to porches, and is not 

 backward in entering houses, making it locally a first-class pest. 



URANOT/ENIA Arrib. 



U. sapphirina O. S. Local, but probably found throughout the State. 

 Larvee have been found in the Great Piece Meadows VIII, 10, Irving- 

 ton IX, 5, Trenton VIII, 5, Metedeconk Neck IX, 23, Lahaway VI, Cape 

 May. Breeds in open swamp areas well overgrown with floating 

 vegetation, the eggs laid in boat-shaped masses. The adult is a 

 small insect marked with metallic blue scales and does not bite. 



WYEOMYIA Theob. 



W. smith ii Coq. Breeds in the leaves of pitcher plants, "Sarracenia," 

 wherever these occur in the State. The adult is a small insect that 

 does not bite and lays its eggs in the leaves, fastened to the sides 

 when they have no water, or on the surface when they are full. 

 Larvae may be found at all times of the year, the winter being passed 

 in that stage, sometimes active, in mild weather, sometimes frozen 

 solid. The first adults mature late in May. 



Family CORETHRIDvE. 



The members of this family have until recently been included with the 

 mosquitoes; but in their light colors and generally weak appearance they 

 come nearer to the "Chironomidse." The mouth parts are not extended, 

 and are not furnished with lancets, so that they cannot bite. Except in 

 the genus "Corethrella" the known larvae of our species are not depend- 

 ent upon atmospheric air. They live in the water, maintaining a hori- 

 zontal position some distance below the surface, and are so transparent 

 as to be almost invisible. They are predatory in habit. 



46 IN 



