(oe Rech + } 
FAMILY CONTAINING A NEW FEMALE FORM, LEIGHI, BRED FROM 
A TROPHONIUS, WeEstw., FEMALE OF PAPILIO DARDANUS CENEA, 
STOLL, FROM PinETowNn, NATAL. 
Prof. Poutton exhibited the trophonius parent and the 
fifty-five offspring reared from her egys by Mr. G. F. Letcu, 
F.E.S, of Durban. This very interesting family had been 
accompanied by the following notes written by Mr. Leigh :— 
** Durban, 
“* Sept. 24th, 1910. 
“T should have sent you this brood of cenea last mail, 
but I was away from Durban. I feel certain you will be very 
pleased with it, as it is certainly the most extraordinary lot 
I have ever reared from ova, and includes all three forms of 
the ? and also two specimens of another very fine variety. 
I am sending all to you, including these two varieties. This 
brood has taken up a great deal of time, and I have bestowed 
the greatest care upon them all through—about eleven weeks 
inal]. [think the result will prove this, as I have only had 
seven deaths, and only one real cripple in the whole lot. 
* As usual when breeding a number of specimens there is 
a greater proportion of females. There were great differences 
in the duration of the larval stage, some individuals feeding 
up very quickly, and others slowly, and also taking longer to 
change their skin and to pupate. I am certain that this also 
happens in wild larvae. ‘The duration of the pupal state, 
however, varied very little. The first eight specimens bred 
took as nearly as possible two months from ovum to imago. 
At this time of the year I am sure the complete cycle would 
not exceed six weeks, but the parent of this brocd was 
captured in our mid-winter (dry season), and consequently 
the food-plant was very dried up until the rains of about the 
last four days, This, in my opinion, accounts for the fact 
that the larvae did not feed so freely as they would have done 
at this time of the year. 
“T think this is a very interesting brood, and the results 
undoubtedly show that the hippocoon form is the rarest of the 
three female forms here, and this is really as it ought to be, 
for Amauiris dominicanus which it mimics is very scarce now. 
PROC. ENT. SOC. LOND., 111. 1911. C 
