REPORT ON MOSQUITOES. 



273 



grayish white scales ; the proboscis is black, without marks or 

 rings; the palpi in the female are normal, dark brown or blackish, 

 with the terminal joint very small, bluntly pointed at the apex 

 and flat at. the base. ^ In the male the palpi (fig. 41, 8) are black, 

 slightly dilated toward the apex, with steel blue reflections; the 

 basal joint long and slender, the central short, and tog"ether they 



Figure 83. 



Culex triseriatus: i, female adult; 2, her anterior claws; 3, anterior; 4, middle, and 

 5, posterior claws of male: all enlarged. (Original.) 



reach the tip of the proboscis. The terminal joint is very short, 

 only a little longer than half the length of the central. The fan- 

 like tufts are small and scant. The antennre of both sexes are 

 brown, with the plumes of the male paler. 



The dorsum of the thorax is grayish white and has a broad 

 black band in the center, becoming wide and rounded posteriorly. 

 18 MO 



