48 MARCH. 



of trouble will thus be saved to the collector, as well 

 as time. 



And I would now say a word to the tyro at the 

 commencement of the season to avoid carelessness and 

 inattention : it is lost labour, as far as entomology is 

 concerned, to go out into the woods and fields, collect 

 a number of larvae, bring them home, put them, with 

 their food, into his breeding-cages, and leave them to 

 chance. This will not do : they must be supplied with 

 fresh food often as the other gets stale ; it must never 

 be allowed to get mouldy ; if it does, the larvae soon 

 become sickly, and eventually die. The food should 

 never be put into air-tight jars, damp with rain, as this 

 will infallibly cause it to mould, and the mined parts 

 of the leaves in which the pupae of the Lithocolletides 

 are contained, if cut out of dead leaves collected on the 

 ground, should be exposed to the air for a day or two, 

 or laid open on a plate in a warm room for a few 

 hours before being finally placed in the breeding- 

 glasses. 



