REPORT OX MOSQUITOES. 331 



of permanent water bodies and in swamps is the frequent com- 

 panion of Anoplicles. But it may be and is also found in pools 

 which diy out completely at times, and even in rain pools and 

 woodland depressions. It is not a universal breeder, however, 

 like pipicus, and never occurs in such masses ; the larvae are in- 

 dividual in occurrence rather than in swarms. 



No larvcT have been found by Mr. Brakeley in his winter col- 

 lections, even in the pools in which they were found late in fall. 

 In a lot of material sent in April 7th, 1903, Acdes fuse us and 

 Culcx can'adensis were brought to maturity April 13th and 14th 

 respectively, and when about everything was gone, April 19th, 

 voung larvae of territans began to- make their appearance," the 

 eggs having been, without doubt, in the mass of sediment sent 

 with the specimens. A similar experience with another lot of 

 specimens makes it reasonably certain that the eggs winter at the 

 l)ottom of the pools and ponds where the larvae occur, but 

 wh.ether they will stand a winter drying out or not is a question. 

 The larva is not an early one. Mr. Brakeley's record is May 

 1 2th for single specimens and as late as June 2d he records a 

 " regular nest of territans apparently just hatched." None of 

 our early collections turn out territans before the middle of May 

 and it is not until the season is well advanced that they become 

 at all plentiful. They hang on in fall, however, until Novem- 

 ber, and are among the last of the species to be found outdoors. 

 INIr. Grossbeck took them in early October in a swampy area 

 along the Passiac, both as full-grown lar^'?e and pupae, from 

 each of which forms adults were obtained later in the labora- 



toiT. 



Mr. Brakelev took larvae in a ditch spring October 27th, after 

 it had been ice covered, but they were not brought to maturity. 

 Pupae were found in a spring that had been ice covered Novem- 

 ber y\ and adults emerged on the 7th. November i8th, another 

 lot of larvae was taken from an ice-covered pool, but these were 

 not bred. Whether these late adults mate and oviposit is not 

 known ; that they perish soon after they are born is indicated 

 by our failure to find any of them in winter quarters. 



Taken as a whole, this can scarcely l)e counted among the 

 reallv troublesome mosquitoes and that is fortunate, because it 

 is one whose breeding areas it would be most difficult to con- 

 trol. No other 0//^,r- lives in w^ater so shallow as this, and no 

 other is an inhabitant of streams and ponds to- the same ex- 

 tent. Anopheles, however, does occur with territans in most 

 of its breeding places and any attempt to control the one would 

 naturally affect the other. 



