Mr. Elliott was equally successful with Datana perspicua. Specimens 
thus produced are, I have found, less liable to grease than others. So 
it is with specimens of the first brood in all species producing more than 
one brood in a season. 
While a certain amount of space dependent upon the larvze collected 
is desirable for some species, it is also a fact that others do better if con- 
fined in close quarters. I refer particularly to various Cochlidia, Cerure, 
and Nofodonie. In the case of one variety of the latter I found st im- 
possible to bring them through until I confined them in a close tin box 
two or three together almost air-tight, and in this way they reached 
maturity without trouble. 
Many species feed’ only at night, and these may be hastened in their 
growth by being kept in a dark box. ‘Thus it will be seen that only ex- 
perience and careful observation of the habits of larva, coupled with 
that great essential of all, cleanliness, will produce satisfactory results 
in the rearing of Lepidoptera. If the larvae are not properly tended, 
your pupee will produce imperfect, weakly specimens. 
The treatment of pupz is a matter of experiment to most of us. 
Many species remain as larve within their pupal shells until the Spring, 
and these require special care both as to moisture and temperature. | 
have found it possible by a constant and careful application of heat to 
produce Winter specimens from many pupe, but unless great care is 
exercised not to hasten them too much, your imagos will be but thinly 
covered with scales, and their colors faded. 
I feel that my subject has been but barely touched upon as yet. 
Many things I would like to present on the habits of larve so full of 
interest, their diseases and enemies. The Coe/odasys group which feed 
in the margin of leaves so nearly resembling by their jagged outlines and 
colors, and the actual shape of the leaf, as readily to escape attention 
are especially of interest. 
The Catocole too stretched at length along the dead twigs or hidden 
in the interstices of the bark, which when touched fling themselves into 
the air for many feet with a faith as to the result, that might inspire more 
of us with courage. It is a remarkable fact that at various periods of 
their lives, larvae seem to require food other than vegetable. 1 refer to 
their habit of eating the shells of their eggs when first hatched, and their 
cast off skin at each successive moult. It has been supposed that this 
was done as a matter of protection, in order that their enemies might 
not be aware of their presence by it, but I have found that it has a much 
more important place than this in their economy, for if deprived of this 
stimulent to their appetites, in most cases they refuse food and die, 
particularly in the early stages of their growth. 
These and many more I might mention, are worthy of study. 
