158 THE MOSQUITOES OF NEW JERSEY 



becomes darker. Head yellow with faint cloud on vertex, almost twice as 

 broad as long, evenly rounded in front. Six hairs arise from anterior 

 part of head, four in central part, one from base of each antenna. An- 

 tennae short, half as long as head, pale yellow. Almost uniform in thick- 

 ness two-thirds from base, tapers slightly toward, tip, where there are 

 four short spines and a small joint; surface sparsely set with small, 

 stout spines. Eyes rather small occupy part where head widest, rotary 

 mouth brushes very dense, hairs pectinated at tip, most obviously so in 

 center of structures. Mandible normal, with few small spines on dorsal 

 part of base. Maxillary palpus short and broad, with rather large api- 

 cal tuft and large, stout, basal joint. Mentum triangular, with thirteen 

 to sixteen small teeth of uniform size on each side of apex. 



Thorax one and one-half times width of head, sides angulated, each 

 angle with moderate cream colored tufts, and two small, two-haired 

 tufts on anterior margin. 



Abdominal segments one to seven subquadrate, with two hairs to each 

 lateral tuft. Eighth segment has lateral combs of scales arranged in 

 single regular curved rows. Each row consists of seven to twelve elon- 

 gated scales, very acute at apex, fringed at sides with short, fine hairs. 

 Anal siphon four and one-half times as long as wide at base and tapers 

 rather evenly toward tip. Small ; readily overlooked in living larva. Lat- 

 eral rows of spines consist each of from nine to thirteen and extend one- 

 third length of siphon from base. Individual spines slightly curved, 

 their apices drawn to long, slender points, bases rather broad with three 

 or four teeth. Ninth segment almost square, completely ringed by chi- 

 tinized saddle ; ventral brush rather large, composed of ten or twelve 

 tufts of hair, confined to barred area ; double dorsal tuft small, each 

 tuft with one long hair. Anal gills very long and slender, pointed at 

 apex, lateral margins scalloped, tracheal tubes plainly visible through 

 them. 



HABITS OF THE EAKLY STAGES 



The species when first found in the larval stage in a woodland pool 

 near New Brunswick, July 29, 1903, was at once recognized as distinct 

 by its unusually long anal gills, the very small breathing tube and by its 

 habit of remaining close to the bottom, a very unusual one for a mos- 

 quito larva. Wliile in confinement the wrigglers never rose voluntarily to 

 the surface, and when disturbed sailed rather than wriggled upward, 

 descending immediately when quiet was restored. So inconspicuous and 

 transparent are they, that a jar containing them would be set aside as 

 empty unless critically examined, and this, together with their habjt of 



