PredOjCeoibs Insects and their Prey. 325 



Masbonaland, During the past five years Dr. T. A. 

 Chapman has presented to the Hope Department a fine 

 series of predaceous insects and their prey from a number 

 of European locaKties, chiefly Spain, Mr. H. St. J. K. 

 Donisthorpe has for many years presented valuable material 

 in many groups of predaceous insects from numerous 

 British localities. In the course of a visit to La Granja 

 in the Sierra Guadarrama, Spain, I was able, in July 1902, 

 to make a considerable collection of Asilid flies and their 

 prey, and in particular to study the habits of Dasypogon 

 diadema, which is very abundant in that locality. 



Small collections of material making up altogether an 

 important part of the foundation on which this paper rests 

 have been contributed by the following naturalists : — Mr. 



C. N. Barker and Mr. F. Muir from the neighbourhood of 

 Durban, Natal; Mr. S. A. Neave, from N.E. Rhodesia; 

 Rev. K. St. Aubyn Rogers, from British East Africa ; Lieut. 

 T. Bainbrigge Fletcher, from Port Sudan ; Mr. E. E. Green, 

 from Ceylon; Col. C. T. Bingham, from Burma; Dr. Richard 

 Evans, from near Penang ; Mr. J. C. Kershaw, from Macao ; 

 Rev. F. D. Morice, Monsieur Chretien, Mr. G. C. Champion, 

 Mr. W. Holland, and Mr. A. H. Hamm, from Spain. 



Small collections from British localities have been 

 presented by Mr. Edward Saunders, F.R.S., Dr. G. B. 

 Longstaff, Mr. W. J. Lucas, Mr. A. H. Hamm, and Mr. J. 

 Collins ; and single examples by Commander J. J. Walker, 

 Mr. R. Shelford, Mr. W. Holland, Mr. A. J. Chitty, Mr. L. 



D. Saunders, Mr, H. A. Saunders, Mr, J. E. Collin, and 

 Mr. E. A, Cockayne. 



Many naturalists have rendered kind assistance by 

 drawing attention to published or manuscript records. 

 Many interesting British records, several of them now 

 published for the first time, were kindly communicated by 

 Colonel J. W. Yerbury and Mr. Claude Morley ; and 

 valuable help of the same kind was afforded by Mr. G. H. 

 Verrall, Mr. J. E. Collin, Mr. G. C. Bignell, and Mr. G. T. 

 Porritt. Mr. W. L. Distant kindly drew my attention to 

 many published records of the attacks of predaceous insects, 

 especially in South Africa. 



It is equally pleasant to acknowledge all the kind help 

 received in working out the material, half of which, viz. 

 the prey, was generally in bad condition and very difficult 

 to determine. Here also I am chiefly indebted to Colonel 

 J, W. Yerbury, who has devoted an immense amount of 

 time and labour to the largest part of the collection, the 



