Hints and Suggestions. 2 1 



infected specimens. Pieris Cheiranthi is particularly 

 liable to this fly. The red fungus found on the Tithy- 

 mali moth caterpillar is another disease, but is not very 

 common. 



Caterpillars should be handled as little as possible 

 while removing them to their fresh food. As a rule, 

 they crawl on to the fresh supply at once, but in the 

 case of very small specimens a camel-hair brush 

 should be used to lift them from one place to another. 

 Many of them emit a fluid when touched. The Tithy- 

 mali spits out a quantity of green fluid when disturbed. 



Butterflies generally seem to be found in the greatest 

 numbers in the barrancos early in the year. When, 

 however, the fields get green and vegetation increases, 

 they desert the barrancos and take more to the fields 

 and country, with the exception of the Argynnis 

 Lathonia, a variety which more particularly frequents 

 barrancos. 



The time of appearance of all species takes place 

 from two to four weeks later the higher they are up 

 the mountains. The south part of the island is not so 

 fertile a place for Lepidoptera as the north ; perhaps 



