REPORT ON MOSOUITOES. 



00/ 



almost as many Cidcx lar\-aj had disappeared. August i6th, two 

 larvae and two pupae were found near Newark in company with 

 full gTown larvae and pupae of Culc.v sylvestris and C. pipiens ; 

 there was ho other food and the larvae lingered until September 

 23d, or more than a month, before they died. September nth. 

 full grown larvae and pupae were found in numbers in a woodland 

 pool in the Great Piece meadows, in company with Anopheles, 

 Coiichyliastes miisicns, Culc.v serrafus, dupreei and fcrritans. 

 September i6th a few examples were found in a swamp area near 

 Paterson in company with Cidex pipiens and the last record is 

 that for October 3d already referred to, when only this species 

 escaped from a concentrated pond population of predatory species. 

 The species has never been taken in large ponds containing fish, 

 nor on the other hand, in temporary rain pools or in foul water. 



The pupa is as interesting as the larva, almost equally trans- 

 parent and rests suspended in the water two or three inches from 

 the surface. It has the usual breathing tubes, but does not seem 

 to depend upon them for its supply of oxygen. When it ap- 

 proaches maturity the pupa becomes more opaque, rises to the 

 surface of the water and remains there until the adult appears. 



The larva has nothing of the appearance of the other mos- 

 quito wrigglers ; but the pupa is not unlike those of the more 

 normal species. 



CORETHRA CIXCTIPES, COO. 



The Ring-legged Corefhra. 



A medium sized, very robust, dark brown mosquito. The 

 beak is short, the thorax marked with four stripes. The abdomen 

 is uniformly blackish brown in the female, banded with yellow- 

 ish at the base of the segments in the male. The apices of the 

 femora and bases of the tibiae are broadly banded with yellow, 

 with a black ring in the middle, and the tarsi are banded with 

 yellow at the base of the joints. The wings are mottled with 

 black and vellow scales. 



Description of the Adult. 



This mosquito which is figured on plate 112 is of medium size, 

 very robust in appearance and measures 5-6 mm.,=.20-.24 

 of an inch in length. The head is brown, densely covered with 

 long yellowish hair ; the proboscis about two and one-half times 

 as long as broad and brown in color; the palpi alike in both 



