cO 
This is the fourth species of Precis thus traced from one 
phase to the other by Mr. Marshall,—Pvecis sesamus in 1898, 
P. antilope in 1902, P. actia in 1903, and now P. ceryne in 
1905. 
In addition to the experiments upon the Nymphaline genus 
Precis, Mr. Marshall has done an immense amount of work 
upon seasonal forms of the Pzerzzae. This material he has 
generously placed at the disposal of Dr. F. A. Dixey for 
critical examination and publication. It consists of the fol- 
lowing sets :— 
A hundred and twenty-seven examples of Zeracolus omphale, 
including offspring belonging to g families, the female parent 
present in 8 cases. 
A hundred and twenty-three examples of Zeracolus achine, 
including offspring belonging to 13 families, the female parent 
present in 12 cases. 
Nine examples of Zeracolus ione,—two female parents with 
3 and 4 offspring respectively. 
Eighty-nine examples of Lelenots severina, bred from two 
companies of young larvae, each the offspring of a single pair 
of parents. 
One hundred and twenty-eight Pzerzzae, captured in 1905 
in the neighbourhood of Salisbury. Nearly the whole of these 
belong to the same species as those experimented upon, and 
are thus available for comparison. 
In addition to the above, a set of 73 insects of many Orders 
from the Salisbury district include the rare Lycaenid J/ima- 
craca marshalli mimetic of Limnas chrysippus, and several 
pairs of insects captured zz coztu. Among these latter is 
a pair of A7utillidae, which, as Col. C. T. Bingham informs 
me, enable us to unite under a single species a male and 
a female hitherto considered to belong to entirely different 
groups of the family. This is a striking illustration of the 
great results which would be achieved if such specimens were 
collected on a large scale. 
In addition to the above splendid accessions from the 
Salisbury district, we owe to the same generous donor the 
