26l 



2. Determine the species of tlie larvae 

 collected. 



3. Make a map of the neighbourhood, 

 noting — 



ia) All breeding grounds. 

 (6) What species are found breeding in 

 those examined (Fig. 60). 





'iMJeyporensis '■'<in'^--' 



'owalasa. ..,/ 

 .spbeens 6ff'' 







Fig. 60. Map shewing how to make a Malarial Survey 



(B) The Presence of Winged Anophelines — 



I. Search in outhouses, under eaves, etc., as 

 described in Chap. XIII, for Anophelines. Deter- 

 mine the species, note relative numbers of each 

 species on map. The relation'' of Anophelines to 

 native dwellings will probably be evident. 



