VI 



Otlter Genera of North Amermm Mosquitoes 



HA^^ENG given a full consideration to the common 

 mosquitoes of the genus Culex, which includes by 

 far the majority of all of the mosquitoes which in- 

 habit North America, and having paid special attention 

 to the forms of the genus Anopheles, which comprises all 

 the species which have been i^roved to carry the malarial 

 germs, and having also told the story of the yellow-fever 

 mosquito, there remain for brief consideration the mos- 

 quitoes of the six additional genera known to occur in the 

 United States. The structural peculiarities of these six 

 genera are described in full in Chapter X., and since they 

 are few in number of species, and since until recently all 

 of them were unknown except in the adult condition, this 

 consideration must necessarily be brief. 



Genus Psorophora Desvoidy 



The insects of this genus are large mosquitoes, and 

 only one species, Psoropliora ciliata of Fabricius, inhabits 

 the United States. In this insect the palpi in the male 

 are longer than the proboscis, while in the female they 

 are less than one-half as long as the proboscis. The 



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