58 



High and Low Temperatures. — It has been ascertained by ex- 

 periment that a temperature of 120° to 130° Fah., continued for 

 two or three hours, is fatal to the larvae in flour or other manu- 

 factured products, and if continued five or six hours is destructive 

 to the eggs. In case whole grain is found infested, a very much 

 greater heat is permissible. Wheat has been subjected to a 

 temperature of 150° Fah. for a short time without destroying its 

 germinating power. 



As before mentioned, infested mills in Canada have been filled with 

 tteam and then thrown open, the cold winter air, as it penetrated 

 every part of the mill, destroying many larvae and pupse. Cold 

 weather, however, has little or no effect on the larvsB when left 

 undisturbed in their silken tunnels. 



The following references to the places of publication of the 

 more important articles that have been written on the Mediter- 

 janean flour moth are given below in convenient, compact form, 

 usually with an indication of the character of the contribution. 

 The articles marked with an asterisk I have not seen. 



BIBLIOGRAPHICAL LIST. 



1879. 



1. Zeller, p. C— Stett. Ent. Zeit., 1879, pp. 466-471. 

 Original description of species, with notes on outbreak. 



1881. 



2. Snellen, P. C. T.— Tijdschr. voor Ent, 1881, pp. 20-22. 

 Mention of Prof. Zeller's paper (1879). 



188i. 



■'». GiRARD, Maurice. — Bull. Soc. Ent. France, 1884, pp. Ixxiii, 

 Ixxiv. 

 Note on ravages of the moth at Lodelinsarte, Belgium. 



■k Karsch, F.— Ent. Nachr., May, 1884. 

 Record of the appearance of the moth on the lower Rhine. 



5. Preudhomme de Borre, A.^ — Compt. Rend. Soc. Ent. Belgique, 

 July 5, ia84. 

 An account of injury done in a noodle factory in Belgium. 



1885. 



0. Entomologische Nachrichten, 1885, pp. 46, 47, 239, 240. 



Editorial mention of the appearance of the flour moth at 

 Bremworde. 



Review of a communication by Prof. Landois to the Braun- 

 Bchweiger Tageblatt. 



