i«S 
Proportion of Males to Females of Reared Insects. 
One is often struck by the large proportion of males 
among mosquitoes artificially raised, a troublesome 
fact when feeding experiments are being conducted. 
According to Berkeley, if the larvae are kept supplied 
with abundant food the proportion of males is much 
reduced. 
Ectoparasites of Anophelines 
These are hexapod larvae of Acarines, family Hyd- 
rachnidae, the genus possibly Eylais , Hydrodroma , 
Hydrophantes or Diplodontus , but cannot be identified 
with certainty in the larval stage. 
