230 CURRENT NOTES. 



A Method of rearing the Larvae of Stomoxys. 



M. Maurice Langeron (C. R. Soc. Biologie, Ixix. 1910, p. 230) states 

 that he has found moistened bran to be an excellent medium in which to 

 breed the larvae of Stomoxys, the bran having first been sterilised by boiling, 

 to prevent the development of mould, which is so often fatal to larvae reared 

 in horse-dung, etc. He agrees with Newstead that darkness and great 

 humidity are essential for success. The eggs of Stomoxys calcitrans were 

 easily obtained by isolating female flies in glass tubes, in which they ovi- 

 posited readily. The eogs thus obtained were always fertile and hatched in 

 the tubes after two, three, or four days, according to the temperature. The 

 female always died a few hours after the eggs were laid. 



