220 TIIE BUTTERFLY VIVARIUM. 



pain to a perceptive point corresponding with the 

 human hrain. Striking down one of these creatures 

 with a stick, its long abdomen was severed from the 

 trunk ; but on being furnished with flies, it greedily 

 devoured several. On attempting to fly, however, 

 thus deprived of its balance-pole, it could not rise 

 properly or guide itself; but on Mr. Haworth 

 forming for it a false abdomen by means of a light 

 piece of a geranium-stalk, the greedy Aeshna, after 

 taking another couple of flies, flew off with great 

 glee, evidently not aware of the injury it had sus- 

 tained, and certainly not of the nature of the con- 

 trivance by which the present inconvenience, caused 

 by the injury, was entirely obviated. 



Aeshna Grandis has beautiful transparent brown 

 wings in both sexes, but the same differences of 

 form distinguish them as in the last species. While 

 speaking of this genus, I may mention the fine 

 continental species A. Azurea, a magnificent insect 

 common in Hungary, which might easily be reared 

 from the larva in a Vivarium, in which it would 

 form a striking novelty. 



We now come to the beautiful kinds contained in 

 the Agrionidce, of which we have already described 

 one species, that with the entirely purple wings, 

 Calopteryx Virgo. The next species, Calopteryx 



