170 THE ENTOMOLOGIST. 
species could not be collected for me in such large numbers as 
during the previous winter; but I have a number of Cecropia, 
Polyphemus, and Promethea, sufficient to enable me to obtain a 
large number of fertile eggs. Of Pernyi I have a large number 
of splendid cocoons. Of other species, such as Cynthia, Pyri, 
Spini, I also have a sufficient number to obtain eggs. I have 
also a certain number of good European species. 
Before I conclude, I must say a few words respecting two 
Indian species (from the Himalaya) mentioned by Mr. P. H. Gosse, 
F.R.S., in his able and interesting memoir on the Attacus Atlas. 
These two species are Caligula Simla and Attacus Royler; the 
former lives on chesnut, the latter on all species of oak. I 
possess cocoons of these two species, but unfortunately I 
discovered a short time since that all the pup of Cal. Simla 
were dead, and only contained dry moths. Cal. Simla is a double- 
brooded species, and very likely the moths, being unable to 
emerge during the last autumn (1878), in consequence, perhaps, 
of the great difference of climate, died in the pupe. 
The cocoons of Attacus Roylei, of which I possess twenty- 
eight, seem all in good condition; and I hope that fertile eggs 
will be obtained from this species, if not by me, by others who 
have been fortunate enough to obtain cocoons. 
110, Clapham Road, London, March, 1879. 
Since writing the above I may state that I kept about forty 
pupe of Endromis versicolora, with the object of obtaining fertile 
eggs. Only twenty moths emerged—seventeen males and three 
females. The first two females did not pair; the third female 
did pair for a considerable time, but died without laying a single 
egg. FH. versicolora moths emerged from the beginning of March 
till the 5th of April. 
Moths of Attacus Roylet all emerged from the 5th till the 20th 
of June; seven males made their appearance first. Subsequently 
I obtained seven fine females, which I placed with equally fine 
males in seven separate cages; but I regret to say I could not 
observe any of the couples im coitu. A. Roylet is a very wild 
species, resembling in shape and habits B. Yama-Mai. The eggs 
are similar, but somewhat larger than those of B. Pernyi. 
From the fact of my haying been unable to detect any pairing 
of A. Royle, it does not follow that the eggs I have obtained will 
