THE 3IALARIAL 3I0SQUIT0ES 111 



to the Malarial Committee," December 31, 1900, says that 

 in Africa either larvse may be found alone, but in many 

 situations both are found together and even several spe- 

 cies of each. At least five species of Culex were found 

 with Anopheles larvae. " The less the movement of the 

 water the greater the probability of Culex larv* being 

 also found, and in a grass-grown river, the Anopheles 



Fig. 27. — Male of Anopheles punctipennis, from side ; enlarged. (Orig- 

 inal.) 



larvae will be more abundant near the stream and the 

 Culex larvae near the bank." 



Nuttall, Cobbett, and St range way s-Pigg, in England, 

 captured Anopheles nine times with Culex in i^onds and 

 also took them with Culex in ditches in which the water 

 scarcely flowed, in water-logged boats, in stone troughs, 

 and in fact found them fourteen times together with 



