THE COMMON MOSQUITOES OF MINNESOTA 91 



the color pattern. Close examination reveals the fact that the bead 

 is turned toward the dorsal side when feeding, that is, they are 

 surface feeders, whereas the Culicine mosquitoes feed mostly at 

 the bottom of the water pool. 



The adults hil)ernate. Eggs are laid singly on the surface of 

 the water. Generation follows generation throughout the summer. 

 Until 1915 it was thought that this species was not able to transmit 

 malaria, but King, in V)\5, showed that it was able to transmit 

 tertian malaria. 



We have taken this species, adults and larvae, at St. Paul and 

 Savage, Minnesota, August 20, 1913, and July, 1915. In the depart- 

 ment collection are specimens labeled St. Anthony Park, August, 

 1896. 



Anopheles quadri-maculatus Say. — The Four-Spotted Anopheles. 



This species does not seem to be as common in ^Minnesota as 

 Anopheles punctipenuis. It is larger than that species and of a 

 yellowish or l^rownish color. On each wing the dark brown scales 

 are grouped into four spots. It has a fairly wide range, but does 

 not extend as far west as piinctipcnnis, Manitoba being its western- 

 most record. It is more common in the southern part of its range. 



The adults hibernate. Eggs are deposited in loose masses on 

 the surface of the water. Breeding" seems to be most active after 

 August 1st. They may be found in any pool of water, even in 

 rain barrels, although they prefer pools of water on the soil, open 

 swamps choked with vegetation, grassy edges of swamps or 

 places covered with water lilies or spatter-dock. Clean water is 

 preferred to foul. Adults do not fly far from the breeding places, 

 probably not more than half a mile at the most. 



The department collection contains specimens labeled St. An- 

 thony Park, June 11, 1895; October 23, 1895 to September, 1896; 

 Grand Rapids, August, 1896. 



Several other mosquitoes have been reported from Minnesota 

 but have not yet been collected by us. They are apparently not 

 very common. 



Cnlcx dvari: A brown mosquito, with golden scales on the 

 thorax, except for two parallel stripes. The abdomen is nearly 

 black, with yellowish bands ; the tarsi are also ringed with yellowish 

 white. There is apparently only an early spring brood, the species 

 passing the winter in the egg stage. It does not seem to be a 

 common species. 



