MO^ULITUES 



1-2' 



yellow-fever blood ciiine uii a cargo from Central America ii. 

 New OrleaiLs. The lever s[)read rapidly and by the mitldle uf 

 September 2462 people had been attacked by tlie disease and 

 329 had died. Aedc^ is the connnon raindjarrcl moscpiilo lA 

 the South; it is frequently referred to as the '' calie(j mos- 

 quito*' because of conspicuous banding of its legs, ilutrax, 

 and abdomen with black and white. 'Ihis moscpiito is unable 

 to survive the winter of the JSorthern states (Fig. <>jj. 



Fig. 65. Outdoor laboratory work in a malarial di.strict of the city 



Culex mosquitoes. To this genus l)elong our most conuiion 

 household forms. Thev are o-enei'allv l)rown and mav hv (lis- 

 tinguished fi-om Anoj,]i,],s l)y the fact lliat tliey rest with body 

 parallel to the })lane of supi)ort and liead and proboscis bent, 

 giving a humi)backed appearance. ANdiile these mos(piitoes 

 are not known to be injurious to liealth, tlu' annoyance and 

 distress they cause furnish am]>le reason for the general move- 

 ment to exterminate them. ('uh.r pip/nis is the common 

 houRohold pest throughout the C( tun try. Howard says these 

 mosquitoes will not llv far from thcii- l)i-eeding places unh^ss 



