180 Journal New York Entomological Society. [^°'- ^^ 



of water and contained aquatic plants, Lemna, Spirogyra, etc. The 

 water was somewhat stagnant. The locality was at Bellport, on the 

 south shore of Long Island. The eggs form a boat-shaped mass float- 

 ing on the surface of the water, much as in Ctilex pungens, but the 

 mass is smaller, containing a less number of eggs and is less regularly 

 elliptical, more angular. It floats less on the surface, the middle 

 eggs being nearly half submerged. The sculpture and color of the 

 individual eggs also are different. The newly hatched larva at once 

 takes up the usual feeding position. This is essentially as in Culex, 

 but the body is held more flatly, more parallel to the surface, yet be- 

 low the surface film. Consequently, though feeding as Culex, the 

 larvae resemble Anopheles at a casual glance and were several times at 

 first mistaken for them. The larvae are fond of resting below the 

 leaves of the Lemna, where they remain with the air tube penetrating 

 the surface film and feed, often with a rotary motion of the body on 

 the air tube as an axis. Occasionally they bend up to feed at the sur- 

 face. They are not timid and often a considerable commotion of the 

 water is necessary to send them to the bottom. The head may be 

 partly rotated on the neck, but the habit is not so completely devel- 

 oped nor so frequent as in Anopheles, which regularly feeds with the 

 head inverted. It has an elongate, dark brown head with a contrast- 

 ing pale body, the hairs of the anterior abdominal segments markedly 

 longer than those of the succeeding ones. Of the local species (at 

 Bellport), it most suggests the species of Anopheles, as above noted. ' 

 The long anterior hairs assist in the deceptive appearance. There 

 seem to be four larval stages, the last three being essentially alike, 

 except for the successively larger size. This is shown best by the 

 head, as in Lepidopterous larvae. The head gradually becomes paler, 

 being black in the young larva and brown in the large ones. The 

 pupa resembles that of Culex, but is very small and has unusually long 

 air tubes. The species seems to breed continuously all summer, pre- 

 ferring warm stagnant pools of some size, containing Spirogyra. It 

 did not occur in the marshes which were well filled with larvae of 

 Culex sylvestris and C. sollicitans. 



The figures of the accompanying plate were drawn by Mrs. Perle 

 N. Knopf from fresh specimens immediately after collection. I am 

 indebted to Mr. D. W. Coquillett for verifying my determination of 

 the species. 



Egg. (Fig. I.) — Erect, the micropylar end down, closely placed, 



