202 METHOD OF COLLECTING 



brass or iron wire-cloth to prevent the escape of th< 

 caterpillars. When they have fed their accustome( 

 time, and attained maturity, they will dig them 

 selves a recess under the surface of the soil, an 

 there undergo their change into a chrysalis. In thi 

 condition they will continue, till transformed by th 

 genial influence of the sun. 



" Some years," says Mr Samouelle,* " produc 

 a greater quantity of caterpillars than others ; an 

 keeping each kind by themselves would require 

 immense number of cages, and much time in chan 

 ging the food, and paying a proper attention to then- 

 It is a common practice to have a breeding cage 

 larger dimensions, by which means a great numbe 

 of caterpillars may be fed in one cage, in which 

 variety of food may be put, but must be taken awa 

 and replaced with fresh plants, every second 

 third day, for this tends greatly to the obtainin 

 of fine specimens of the perfect insect." 



OF PUPJE. 



The skin of the pupse generally retain 

 original shape and colour, as before the insect bun 

 from its confinement. No preparation is therefor 

 necessary, and it should only be fixed on a card, 

 above directed for the caterpillar. 



* Samouelle's Entomologist's Useful Compendium, p. 3] 



