Ixxiv 
also exhibited, were found to differ in several important 
characters. 
(9) A-series of Z. trifolii and Z. filipendulae showing transi- 
tional forms between the two species, in the gradual decrease 
of breadth of border to secondaries and also in the appearance 
of the sixth spot, starting from two or three red scales and 
gradually increasing in size until it reaches the well-developed 
spot characteristic of the Aberdeen race of Z. filipendulae. 
It was found to be practically impossible to differentiate the 
overlapping forms without recourse to the genitalia. It was 
also suggested that Z. tutti if not identical with Z. filipendulae 
was extremely close to it, and that Tutt’s theory that it is 
an offshoot of Z. trifolii is impossible. It was found that 
Z. tutti would readily pair with Z. filipendulae and that Z. tutti 
would rarely pair with Z. trifolii, but that up to the present 
it had been found to be impossible to obtain a pairing between 
Z. filipendulae and Z. trifolii. It was pointed out that the 
different dates of emergence may have something to do with 
this, but it certainly seems likely that Z. tutti holds an inter- 
mediate position in the line of fertility between the two distinct 
species Z. trifoli and Z. filipendulae. 
Dr. CockayNE also commented on the difficulty of deciding 
the identity of Z. tutti. 
DaNAIDA cHRySIPPUS L., CAPTURED AND THEN REJECTED 
BY A YOUNG SHRIKE IN 8. Arrica.—Prof. PouLton said that 
he had received the following record from the Rev. G. Cecil 
Day. About the end of May, 1915, Mr. Day saw a young 
Fiscal Shrike—Lanius collaris L., as Prof. Poulton was informed 
by Mr. Charles Chubb of the Natural History Museum—eagerly 
capture and then instantly reject with much apparent disgust 
a specimen of D. chrysippus. The observation was made 
in the grounds of the Modderpoort 8.8.M. Brotherhood, 
Orange Free State. 
THE INSECT FOOD OF THE 'FRouT.—Prof. PouLTON exhibited 
the specimens referred to in the following abstract by Dr. 
R. C. L. Perkins, F.R.S., of his paper in the Journal of the 
Torquay Nat. Hist. Soc., 1921, p. 15 :— 
“The trout from which the specimens were obtained were 
caught by myself, in Aug. and Sept., 1920, mostly in the heat 
