CARRIERS OF FILARIA 



I0 7 



Culex fatigans may be abundant in a house, though no 

 breeding places are near it. The breeding places cover 

 a wider area, and those in the neighbours' compounds 

 must also be destroyed, or even in the whole township. 



Private enterprise is therefore less effective. Combined 

 and compulsory efforts, through a central authority, such 

 as a municipal board, are required. This authority must 

 have powers of inspection, and be able to compel action, 

 or to take it themselves at the cost of the occupier of the 

 land in which the breeding places are. 



The measures adopted for the extirpation of C. fatigans 

 would involve the destruction of some of the other less 



Mansonoides. Culex. 



FIG. 47. Wing-scales of Mansonoides and Culex. 



important carriers of filaria, such as the Myzorhynchus 

 sinensis, M. barbirostris, and Myzomyia rossii and also the 

 Fijian carrier, Stegomyia pendoscutellaris. They would 

 have no effect in diminishing what is in some places the 

 important carrier, Mansonoides uniformis. 



Mansonoides uniformis is readily recognized by the broad 

 asymmetrical scales on the veins of the wings. These 

 scales are in marked contrast with the narrow scales 

 found in most Culicines (fig. 47). The scales on the head 

 are very abundant, and include narrow curved, upright 

 forked, and tile-like scales. There are scales on the basal 

 and second joint of the antennae. It is a yellow-brown 

 mosquito and the legs are much banded, whilst the 



