Predaceous Insects and their Prey. 32 
Or 
Mashonaland. 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 localities, 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. 8. A. Neave, from N.E. Rhodesia; 
Rev. K. St. Aubyn Rogers, from British East Africa; Lieut. 
T. Bainbrigge Fletcher, from Port Sudan; Mr. E. EK. 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 
