XXxii,'21] ENTo.M.i! <><;ir \I. \K\VS 215 



entomology will still be in a rudimentary state ; but in that period many 

 of the species of animals now existing will have become extinct. The 

 constant extinction of other animals by the extension of civilization is 

 one of the saddest facts that the naturalist is forced to recognize, and 

 \ve should at least endeavor to preserve some record of them for the 

 instruction of posterity. It is frequently said nowadays that posterity 

 can take care of itself, but it cannot do so in the matter of a knowledge 

 of the animals that we have caused to cease to exist. 



..... ] can merely add that in my opinion the advancement of 

 collections should be attained by international combination. For want 

 of this the extremely limited resources of entomology are much wasted, 

 and the admirable enthusiasm of collectors is smothered if not entirely 

 extinguished. 



"To become acquainted with their distribution, . . . their 

 evolution," "to preserve some record of them," means not only 

 to accumulate the specimens themselves but to attach to them 

 written or printed records of the localities and the dates where 

 and when they were collected, and, if bred, the circumstances 

 and the parentage. Locality is geographical, topographical 

 and ecological. It is often easier to obtain and to attach these 

 data than it is to collect the specimens, and yet how often are 

 these data (as valuable as the insects themselves) lacking! 



Notes and Newrs. 



ENTOMOLOGICAL GLEANINGS FROM ALL QUARTERS 

 OF THE GLOBE 



Rearing Anthomyid Root Maggots on Artificial Media (Dipt.). 



The use of nutritive broth (bouillon) for the rearing of Dipterous 

 larvae by the French Entomologist, Jean Henri Fabre, has suggested 

 a practical method for observing the larval changes of certain Antho- 

 myidae which normally feed within the tissue of the host plant. Ex- 

 periments with the Onion Maggot, Uylt'iiiyiu antii/n<i Meig., and the 

 Cabbage Maggot, Ilylcmyiu hnixsn\ic Bouche, have demonstrated that 

 these species may be successfully reared on agar jelly containing a high 

 percent extract of the larval food plant. 



Onion agar was prepared by adding ten per cent, commercial agar to 

 a filtered stock of boiled onioji. Cabhav.i- auar was made in the same 

 manner, using a stock of boiled cabbage. These media were filtered, 

 tubed and sterilized for fifteen minutes under twenty pounds pressure. 

 Agar slants in large test tubes or poured plates in petri dishes were 

 best adapted for rearing purposes. Female flies fed on these media and 

 laid their egg clusters on the surface. The eggs were removed, washed 



