248 AGRICULTURAL EXPERIMENT STATION. 



Habits of the Early Stages. 



Four larvcC, rather well grown, were collected by Mr. Van 

 Dursen April 25th, in the swampy woodland at Livingston Park, 

 with Ciilex canadensis and Corethra cinctipes. They were at once 

 recognized as distinct and separated from the others ; but they did 

 not do well ; two died and on May 7th everything that remained 

 was put in alcohol. April 27th another collection of twenty speci- 

 mens was made and May 2d as many more were brought in. 

 The larva was not easily found, occurring only in deep pools with 

 a layer of leaves on the bottom, among which they feed and hide. 

 Pupation began May 4th and on the 7th there were twelve pupae ; 

 but then a fungus attacked the remaining larv?s and all were put 

 in alcohol. The first adult emerged May 8th and all were out 

 May 1 2th, giving a pupal period of from four to five days. 



There was no later appearance of larvce and it is probable that 

 there is one brood only, the winter being passed in the tgg stage. 



CUIvEX SYLVESTRIS, THEOB. 



Tlie Sivanip Mosquito. 



A medium sized or small mosquito, with the tarsi narrowly 

 white ringed at the base of the joints ; the beak is unhanded and 

 the wings unspotted. The abdominal segments have bands of 

 pure white at the base, constricted in the center and narrowed 

 at the sides. 



Description of the Adult. 



This is a mosquito of medium or small size, ranging from 4 

 to 5.5 mm., = .16 to .22 of an inch in length, excluding the 

 beak, which is about half the length of the body. The head back 

 of the large black eyes is golden brown, with small lateral patches 

 of black and white scales; the proboscis is dark brown, black 

 toward the tip, without markings of any kind ; the palpi in the 

 female are normal, dark brown, wdiite at the apex, with a very 

 small fourth joint, somewhat flattened and retracted. The male 

 palpi are similar to C. canadensis, but stouter, blackish brown in 

 color, with a white band in the center of the basal joint and 

 another, rather broad white band at the base of the two terminal 

 joints. The fan-like tufts are normal in size and the central 

 joint extends -one-third its length beyond the tip of the beak. 



