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Mr. Elliott was equally successful with Datana perspicua. Specimens 

 thus produced are, 1 have found, less liable to f>rease than others. So 

 it IS with specimens of the first brood in all species producing mure than 

 one brood in a season. 



While a certain amount of space dependent upon the larva.' collected 

 is desirable for some species, it is also a fact that others do better if con- 

 fined in close quarters. I refer particulaily to various Cochliduc, Cerurce. 

 and Noiodtmtce. In the case of one variety of the latter I fuund i im- 

 possible to bring them through until I confined them in a close tin bo.x 

 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. 'I'hus it will be seen that only ex- 

 perience and careful observaiion of the habits of laivae, coupled with 

 that great essential of all, cleanliness, will produce satisfactory results 

 in the rearing of Lepidtiptera. Jf the larvae are not properly tended, 

 your pu[)a? will produce imperfect, weakly specimens. 



The treatment of pupa^ is a matter of experiment to most of us. 

 Many species remain as larvae within their pupal shells until the Spring. 

 anil these require special care both as to moisiure and temperature. 1 

 have found it possible by a constant and cateful application of heat to 

 produce Winter s[)ecimens from many pupa), but unless great caie is 

 exercised not to hasten them too much, vour imagos will be but thinly 

 covered with scales, and their colors faded. 



I feel that my subject has been but barely touched upon as }et. 

 Many things I would like to present on the habits of larva' so full of 

 interest, their diseases and enemies. The Coclodasys group wliich 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 CatocoLc too stretched at length along the dead twigs or hidden 

 in the interstices of the baik, which when touched fling themselves into 

 the air for many feet with a faith as to the result, that might insj)ire more 

 of us with courage. It is a remarkab'e (act that at various periods of 

 their lives, larvaj 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. 



