66 THE ENTOMOLOGIST. 



and sallow. I then removed the lid of the glass-top box, and 

 turned box, lid, and newly-hatched larvae into the glass bottle, 

 and closed the mouth with a cork. In removing the lid a few 

 larvae may be crushed, but this is unavoidable. On May 19th I 

 changed the bottle for a larger one, but still on the air-tight 

 principle. In removing the larvae I do not touch them, but 

 introducing a sprig of fresh food they gradually crawl on to the 

 new leaves, and I remove the leaves and larvee to bottle No. 2. ; 

 this has to be repeated till all the larvae are removed. Great 

 care must be taken not to place the food in when damp; the 

 leaves should be gathered, if possible, in the sun, and if compelled 

 to gather them in the damp they should be dried with a cloth 

 before admitting them into the cage. On May 24th I replenished 

 their food ; their size was rapidly increasing, and they had twice 

 moulted, and spun the leaves together after the manner of a 

 Tortrix. When I found they had attained too large a size to be 

 fed by the air-tight process, I procured a number of jam-pots, 

 and placed about a dozen larvae in each, with some sandy earth 

 at the bottom for them to burrow in. I then placed in the food- 

 plant and covered the pot with a piece of glass. When they 

 became full-fed I either limited the number of larvae or procured 

 larger pots — always increasing the depth of earth for their 

 pupation. Nearly all my larvae grew to perfection, showing many 

 beautiful varieties. I do not think I lost more than two or three 

 dozen, which were killed by accident when changing their food. 

 I have now a dozen jam-pots containing numerous pupae. So far 

 I have been successful. The number of imagines that will 

 emerge is of course a matter of great uncertainty. The great 

 advantage of this method is, firstly, the food -plant keeps fresh 

 for some days, preventing the continual disturbance to young 

 larvae caused by frequently introducing fresh food ; secondly, 

 they are warmer and free from draught and sudden change 

 of temperature. One thing is always to be remembered, never 

 place them in the sun, or in a very hot place, as the moisture 

 which would collect in the bottle would drown small larvae. 

 I am afraid many will think these notes superfluous, as this 

 method is not original, but has been mentioned in ' Knagg's 

 Guide ' ; and Mr. Stainton recommended, in the pages of the 

 'Entomologists' Companion,' glass cylinders and jam-pots, as 

 many years ago as 1852. While writing this, a fine Tceniocampa 



