162 Proceedings of the Biological Society of Washington. 



Wings hyaline, slightly infuscated; second marginal cell long, about 

 five or six times as long as its stem ; second posterior cell distinctly longer 

 than its stem; scales dusky, those on costa, first, third and fifth veins 

 (exclusive of the upper branch of the last named) black, distinctly darker 

 than those on the other veins; outstanding scales very narrow, the ap- 

 pressed scales narrowly elavate, broader and denser on the black veins. 

 Halteres pale, with dusky knobs. 



Length: Body about 4.5 mm., wing 5 mm. 



Male. — Proboscis straight, with an indistinct pale ring just beyond 

 middle. Palpi acuminate, exceeding the proboscis by more than the 

 length of the last joint, clothed with long dark hairs nearly to base, 

 denser and blacker on the two distal joints; scale vestiture blackish 

 brown, the two distal joints with a patch of white scales dorsally at base 

 and ventrally streaked with white. Antennee plumose, the hairs brown 

 and black with silky luster. Abdomen long, narrowed near base, de- 

 pressed and somewhat broadened distally; dorsal segmental white bands 

 broad, the eighth segment nearly wholly white scaled; lateral ciliation 

 fine and abundant, pale brown with silky luster. Wings narrower than 

 in the female, the fork-cells somewhat shorter, the scales sparser. Claw 

 formula: 1.1-1.1-0.0. 



Length: Body about 4.5 mm., wing 4.5 mm. 



Larva. — Head transverse, bulging at the eyes. Antennae large and 

 rather stout, with a large tuft from a notch at outer third ; shaft spinu- 

 lose, darkened on outer half. Dorsal head-hairs in long tufts of several 

 hairs. Lateral hairs on abdominal segments 3 to 6 single, subdorsal ones 

 on segments 5 and 6 double. Lateral comb of eighth segment a patch of 

 small very narrow scales. Breathing-tube long and slender, over six 

 times its diameter at base, very gently tapering ; pecten of small, very 

 short, evenly spaced teeth, extending over basal fourth; four long tufts 

 of few hairs along postero-lateral aspect of tube, the third out of line and 

 at apical third. Anal segment ringed by the plate, longer than wide ; 

 ventral brush well developed, confined to the barred area. Anal gills 

 lanceolate, about as long as anal segment. 



Laurence Harbor, Middlesex County, New Jersey (H. H. Brehme). 



Type : Cat. No. 20411, U. S. Nat. Mus. 



Described from 7 females and 8 males, which issued from pupse on 

 April 29 and 30, 1916. It gives me great pleasure to dedicate this inter- 

 esting species to Mr. Herman H. Brehme, who has had no small share 

 in making the mosquito work in New Jersey world-famous. Mr. Brehme 

 has kindly furnished the following notes on the habits of this species : 



The larvse, pupse and eggs were found in a cold spring in the woods. 

 The first pupae were taken April 25 ; temperature of the water 38° F. (4.5° 

 C. ). The first males emerged April 29, the first female April 30. The 

 first egg-boat of the new brood was found May 2, and the eggs hatched 

 May 3. The first pupse of the second brood appeared May 15, adults 

 emerging May 17. A fresh egg-boat was found on May 19. Breeding 

 has been going on steadily to date (July 17) and by all appearances will 

 continue throughout the season. The egg-boat is about the size of that 



