Predaceous Insects and their Prey. 359 
Certain general conclusions of much interest may be 
reached from the study of the preceding list. 
PROPORTIONS OF THE SEXES. 
Females are far more commonly found with prey than 
males—being in fact between three and four times as 
numerous. These results will be found to be curiously 
reversed in the case of the Hmpidz (p. 388). The following 
table shows the exact proportion of the two sexes in the 
recorded examples :— 
SEX 
FEMALES. MALES. Oana 
Dasypogonine, eter: 51 fi 10 
Laphrine a 12 We i 1 
Asiline 97 28 8 
PS ane eo ee ee 
Nos. 225 and 226 are omitted from the above table, 
but the total reaches 226 because three individuals are 
included under the single No. 117. 
ANALYSIS OF THE PREY. 
Although conclusions of interest at once suggest them- 
selves when the sexes of Asilid victims are studied, the 
consideration of this part of the subject is postponed until 
after the accumulation of a far larger number of data. 
Before proceeding to consider the list of Asi/ide in 
detail it is of importance to analyse the prey as a whole. 
We shall thus gain a standard with which to compare the 
habits of particular species and genera of these predaceous 
flies. 
ANALYSIS OF PREY. 
I. ORTHOPTERA. 
Acridiide (Grasshoppers) . : , als 
TORI EVs 
