Vol. XI] COLE AND LOVETT—UST OF OREGON DIPTERA 215 



The mosquitoes have the wings clothed with scales and 

 there is no discal cell ; the ocelli are lacking. Not all species 

 bite and only a few come into houses. They are found at 

 all altitudes and in all lands, myriads occurring in the Arctic. 

 Birds and dragon-flies prey on the adults, and the larvae 

 serve as food for fishes and dragon-fly nymphs. 



The larvae are aquatic, some requiring little water for 

 their development. They differ in habits, some feeding on 

 decaying vegetable material and others preying on small 

 organisms. 



81. Anopheles occidentalis D. & K. 



Corvallis; Klamath Falls (Dyar and Caudell). 1906, 

 Proc. Biol. Soc. Wash., XIX, p. 159. 



82. Anopheles punctipennis (Say) 

 Corvallis; Forest Grove, II and III (Cole) ; Portland, 

 VI-30 (Dyar and Caudell). 



83. Anopheles pseudopunctipennis Theob. 

 Corvallis, IX-6; Forest Grove, 11-17 to XII-7 (Cole). 



84. Theobaldia annulata (Schrank) 

 Reported from Calif, to B. C. in Aldrich's Catalogue. 



85. Culiseta consobrina (Desv.) 

 Warm Springs. 



86. Culiseta incidens (Thorns.) 

 Corvallis (Theobald) ; Klamath Falls (Dyar and 

 Caudell). 



87. Culiseta inornata (Will.) 

 Klamath Falls (Dyar). Reported from Cal. to B. C. 



88. Culiseta sylvestris (Theob.) 

 Fish Lake. 



89. Culiseta stigmatosoma (Dyar) 



Klamath Falls (Dyar). 1907, Proc. U. S. Nat. Mus. 

 XXXII, p. 123. 



