OF WASHINGTON. 41 



Culex spenceri Theobald. 



Two captured specimens at Kaslo ; oneby Mr. Currie June 13, 

 the other by myself June 24. 



Culex consobrinus Desvoidy. 

 One captured specimen, July 3. 



Anopheles maculipennis Meigen. 



One male specimen taken in the hotel at Revelstoke, possibly 

 brought there on one of the trains. No larvae were seen. 



Aedes fuscus Osten Sacken. 



Very scarce. It was only met with in one instance, flying 

 near some pools on a hillside above the lake. Three examples 

 were taken which had come out from the shelter of the bushes 

 to bite. 



Corethra velutina Ruthe. 



Larvae occurred in a small pool cut off from the little lake, 

 mixed with Culex territans, on which they not improbably fed. 

 The larva has a breathing tube and air bubbles in its enlarged, 

 quadrate thorax, as in the figures of this species from Europe. 



Sayomyia trivittata Say. 



Larvae occurred in a neighboring pool to the preceding and 

 even in the little lake itself. The queer, transparent, ghost-like 

 things have been figured by me elsewhere.* 



Eucorethra underwood! Underwood. 



The larvae were found in various pools, principally with Culex 

 impiger, but also with C. incidens. When the mosquito larvae 

 were abundant enough to feed them, they generally grew up 

 rapidly and matured in July. In other cases, after they had 

 eaten all the mosquito larvae from a pool, they lingered till late 

 in the season. At Kaslo they were in the cold pools; at Glacier 

 in similar situations, but at Wellington, B. C., I found them in a 

 rain-water barrel. This species is much more injurious to 

 mosquito larvae than Corethra and Sayomyia because of its 

 large size and the fact that it seems to eat nothing else. It has 

 been described by Underwood and Johannsen. 



Dr. Howard, in commenting upon Dr. Dyar's paper, said it 

 was interesting to compare the number of species (20) found 

 by Dr. Dyar in British Columbia with the number observed by 



*Journ. N. Y. Ent. Soc., x, p. 201, 1902. 



