78 THE CANADIAN ENTOMOLOGIST. 



of the insect overwintering in the pupal state we shall be justified 

 in believing from the facts available that in northerly latitudes 

 Musca domestica is accustomed normally to overwinter in the 

 adult state. 



In more southerly latitudes, where the mean temperature is 

 much higher and where the activity of the flies is practically 

 continuous throughout the winter months, one would expect the 

 occurrence of the insect in an active condition and of the various 

 stages of its development during this period, although the duration 

 of such developmental stages would be lengthened. This has been 

 found to be the case in New Orleans, Florida, in the valuable 

 investigation of the Bureau of Entomology of the United States, 

 Department of Agriculture, according to the verbal statement of 

 Mr. F. C. Bishopp. 



LITERATURE REFERRED TO: 



1. Copeman, S. M., and Atisten, E.E. — "Do House-flies 

 Hibernate?" Reports to the Local Government Board on Public 

 Health and Medical Subjects. Further Reports (No. 7) on Flies as 

 Carriers of Infection, pp. 6-26, 1914. 



5. Levy, E.C., and Tuck, W.T. — "The Maggot Trap — A New 

 Weapon in our Warfare aginst the Typhoid Fly." Amer. Jonrn. 

 Public HeaWi, Vol. Ill, No. 7, pp. 657-660, 1913. 



4. Hutchison, R.H. — "The Migratory Habit of the House-fly 

 Larva? as indicating a Favourable Remedial Measure. An Account 

 of Progress." Bull. No. 14, U. S. Dept. Agric, Washington , 11 pp., 



1914. 



2. Heivitt, C.G. — "Further Observations on the Breeding 

 Habits and Control of the House-fly, Musca domestica.'' Journ. 

 Econ. Ent., Vol. VII, No. 3, pp. 281-289, 2 pp., 1914- 



3. Heivitt, C.G. — "The House-fly Musca domestica Linn. Its 

 Structure, Habits, Development, Relation to Disease and Con- 

 trol," pp. XVI-\-3S2, 104 Hgs- and map. Cambridge Univ. Press 

 {England), 1914. 



Phyllophilopsis, new name — Phyllophila Townsend, Proc- 

 Biol. Soc. Wash., XXVIII, 21, is preoccupied, and Phyllophilopsis, 

 new name, is hereby proposed to take its place. 



Charles H. T. Townsend. 



