A Consii)p:ratiox of tup: Insect Population Associated 
WITH Cow Dung at Crawley, W.A. 
243 
The typical dung insects — Sepsids, Hydroplhlids, Aphodiines, etc., all 
])lay their part as scavengers in getting I’id of wast(‘ material, but the actual 
evaluation of the economic importance of tliis ])art is practically impossible. 
AC^KNOWLEDGMENTS. 
The writer wishes to express his indebtedness and gratitude to the follow- 
ing, while absolving them from any responsibility regarding statements of 
opinion by the writer : — Professor O. E. Nicholls for general lielp and guid- 
ance ; Dr, A. J. Nicholson for suggesting the nature of the problem studied ; 
Mr. K. C. McKeown and officials of the Australian Museum, Sydney, for the 
identification of the Coleoptera ; Mr. G. H. Hardy for the identification of 
most of the Diptera ; Mr. J, H. Perkins for the identification of Sepsidae 
and Borboridae ; tlie Officers of tlie Entomological Ih'anch of the W.A. De- 
partment of Agriculture for their co-operation ; Dr. G. A. Currie and Mr. 
K. R. Norris for advice on various aspects of the problem. 
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