97 



A wide-mouth bottle, over which a piece of 

 stout paper has been tied, with a small trap-door 

 cut slightly larger than the tube, may be used. 

 This has the advantage that mosquitoes do not so 

 easily fly out into the tube during the act of 

 transference. It has the disadvantage that the 

 paper tears, and the mosquitoes are more likely 

 to escape through accidental circumstances. 



To Breed Out Mosquitoes 



(Fig. 27) 



Collect a number of full-grown larvae and 

 nymphae of both Anophelines and Culex. 



1. Separate the nymphae from the larvae 

 and place' them in a jar or wide-mouthed bottle 

 half-full of water, leaving room for the insects 

 when hatched. Cover the jar with a piece of 

 thick cardboard or a lid, the central portion of 

 which is replaced by mosquito netting. 



2. Place the larvae where they will receive 

 plenty of light, but will not be subject to great 

 heat. 



3. Remove the nymphae as they are seen at 

 the end of each day. 



To Keep Mosquitoes Alive 



The length of time mosquitoes remain alive 

 in captivity depends almost entirely upon the 

 suitability of the conditions under which they are 

 kept. 



Except for special purposes, mosquitoes (espe- 

 cially Anophelines) should not be kept in open 

 spaces, i.e., frames covered with mosquito netting. 



Procure several ' chutney jars ' with hollow 



H 



