68 THE BEPOBT OF THE No. 36 



Anopheles punctipennis Say. The yellow and 'black patches on the wings 

 are the distinguishing feature of this mosquito, which is the commonelst anophe- 

 line in the district. The poison is very irritating and the insect shows great per- 

 sistence in entering houses. The larvss are ubiquitous. Fortunately this Species 

 doQ's not occur in abundance in the district. 



Culex saxatilis Grossbeck. A very small dark culex in Which the white 

 abdominal bands are at the apex of the segments, instead of the base. The legs 

 are dark and unhanded, and the brown thorax is ornamented with two paler spots. 

 This mosquito is very generally distributed in the valley and is fairly comnnon. 

 It is of no importance, however, as it is non-predaceous on warm-blooded animals. 

 The larva? are found mainly in surface pools and ditches, especially those pro- 

 tected by willow and other growth. 



Woodland Mosquitoes. 



Aedes punctor Kirhy. This is the commonest mosquito in deep woodlands 

 and in wooded mountain areas. It is a fairly large, dark, robust species with a 

 yellowish grey thorax having a broad, central, brown band. The abdominal seg- 

 ments have narrow Avhite bands and the legs are dark and unhanded. Although 

 not a very vicious biter, this species is troublesome in localized areas, as it some- 

 times occurs in gtreat abundance. It is restricted to woods and the larvae breed in 

 temporary woodland pools. 



Aedes varipalpus Coquillett. This is a very beautiful black and white mos- 

 quito. The tarsal segments have broad, white basal bands and the white abdom- 

 inal bands are V shaped, being narrowed at the sides and broadened centrally. 

 The thorax is beautifully ornamented with a variegated pattern of black and white. 

 Although it is a bad biter, the species is of no importance as, although very gen- 

 erally distributed, it is never abundant. It i's a woodland species and breeds in 

 tre'eholes. The males will hover around and settle on the person, as well as the 

 females. 



Aedes canadensis Theobald. This species has a light brown thorax. The 

 legs are banded at the base and apex of the tarsal segments, and the ultimate hind 

 tarsal segment is entirely white, The black abdomen has indistinct white bands 

 at the base of the segments. This is essentially a woodland species. It is very 

 rare in the Lower Fraser Valley. 



Aedes fletcheri aloponotum Hyar. This large red-brown mosquito has broad 

 white bands on the legs at the base of the tarsal segments. The abdomen has broad 

 white basal segmental bands, and the thorax is brown and unornamented. It is 

 rare in the district and is found mainly in wooded areas. 



Salt Marshes and Coastal Pools. 



Aedes curriei Coquillett. A very beautiful fawn-coloured species. The legs 

 have small bands at the base and apex of the tarsal segments, and the abdomen 

 has a broad longitudinal stripe as well as basal segmental bands. The thorax is 

 straw-coloured and is ornamented with a median and sublateral brown stripes 

 This species was taken only along the coast-line and on outlying islands. Larvae 

 are found in brackish water in rock pool and salt marshes. It is seldom suffi- 

 ciently abundant to be of importance. 



Permanent Swamps. 



Mansonia pertiibans Walker. This stoutly-built, du'sty-looking mosquito 

 is easily recognised by the mixture of broad black and white scales clothing the 

 wings, the striped proboscis and abdomen, and the striped legs in which the tarsal 



