Predaccous Insects and their Prey. 



S98 



Dolicliopodidc'e and Antliomyida^* — The single record of 

 a victim captured by a species of each of these families 

 will I trust be of value in calling the attention of natur- 

 alists to the fact that these flies are predaceous, and that 

 specially directed observation will surely yield the material 

 upon which to base a sound conclusion. 



Gordyluridm. — The fact that 'flies of the genus Scato- 

 phaga are predaceous is fairly well known, although the 

 extent of their attacks is probably insufficiently recognized. 

 We here find 10 records as the result of the observations 

 of five observers in several very different British localities. 

 The prey is remarkably scattered through varied Dipterous 

 groups, as will be seen at a glance in the following table : — 



The Prey of Scatophaya. 



* Mr. G. H. Verrall informs me that all the Dolichopodidae are 

 predaceous. Only one sub-family of the Anthomyidae is predaceous, 

 namely, the Coenosinae which are closely allied to the Cordyluridae. 



