i54 Mosquitoes 



the nets. It is an essentially domesticated species. 

 Its black-and-white dress renders it very conspicu- 

 ous, so that it is often referred to as the " calico 

 mosquito," and its day habits render its feeding 

 much more unsafe than that of the noisy revelers 

 who attack in the night. 



Group II. The Salt-Marsh Mosquitoes 



The three great nuisances of the salt marsh are C. 

 salinarius, O. sollicitans, and O. cantator. The last 

 two migrate in numbers for long distances, and thus, 

 bringing trouble into a locality far from their breed- 

 ing place, are a state or county rather than a city 

 problem. 



O. tceniorJiynclius is also an inhabitant of salt 

 marshes. 



Culex Salinarius. — This species does not mi- 

 grate very far. It is also the only one of the 

 four which lays rafts of eggs, and which hiber- 

 nates in the adult form. In Baton Rouge there 

 are, of course, no salt marshes, but this in- 

 sect breeds there abundantly in the swampy 

 places. It evidently prefers clean water, and did 

 not do well in fecal matter. Swarms rise quickly 

 from the swampy land around the bayou early in 

 the evening, attacking furiously when they have a 

 chance, and frequently entering houses. Like pipi- 

 ens, salinarius is a great singer as well as a hard 

 biter. It so resembles pipiens that it is very difficult 

 to distinguish the adults, though the larvae are easily 

 separable. 



In the North this species breeds from about April 



