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MISCELLANEOUS PAPERS. 



It was found necessary, in order to secure proper mating* and 

 oviposition in confinement, to devise a cage that would approximate 

 natural conditions. Such an one was constructed out of doors, and 

 consisted of just enough wooden framework to support a wire-screen 

 inclosure 7 feet in three dimensions with a canvas top for protection 



Fig. 25. — Ouldoor ta^f lor icariii.:, Tarhiuiu:!', with vcslilml 



I ( h iuiii 1 1. I 



against sun and rain. Into this cage (see figs. 25 and 2G) were put 

 several hundred flies of the above two species. The " tanglefooted " 

 trays devised by Mr. W. F. Fiske, containing young caterpillars 

 of Eufvocth ehrysorrhoea and Porthetria disjKu\ were strung on 

 wires within. The caterpillars can not get out of these trays, which 



