MOTIONS OF INSECTS. 371 



pool chance to dry up in summer, and force it to 

 emigrate. 



1 lie sporting of butterflies in pairs, trios, or more, 

 has been looked upon by some as pugnacious skir- 

 mishing. ' A lew of our lepidopterous creatures,' 

 says ^Ir Knapp, ' especially tlie common white 

 butterflies of our gardens, are contentious animals, 

 and drive away a rival from their haunts. We see 

 them progressively ascending into the air, in ardent 

 unheeding contest; and thus they are observed, cap- 

 tured, and consumed in a moment by some watchful 

 bird; but we have few more jealous and pugnacious 

 than the little elegant blue argus butterfly {Pohjom- 

 vutliis ^Itxis, Stephens,) noted and admired by all. 

 When fully animated it will not suffer any of its 

 tribe to cross its path, or approach the flower on 

 which it sits, with impunity; even the large admirable 

 (Vanessa aiaUima,) at these times, it will assail and 

 drive away. There is anotiier small butterfly, the 

 copper (Lijcdua Plilaas, Fabr.,) however, as hand- 

 some and, perhaps, still more quarrelsome, frequent- 

 ing too the same station and flowers; and a constant 

 wariare e.\ists between them. We shall see these 

 diminutive creatures, whenever they come near each 

 other, dart into action, and continue bufleting one 

 another about till one retires from the contest; when 

 the victor returns in triumph to the station he had 

 left. Should the enemy again advance, the combat 

 is renewed; but should a cloud obscure the sun, or 

 a breeze cliill tlie air, their ardour becomes abated 

 and contention ceases. The copper butterfly enjoys 

 a combat even with its kindred. Two of them are 

 seldom disturbed, when basking on a knot of asters 

 in September, without mutual strife ensuing. ]Jeing 

 less afll'cted by cold and moisture than the argus, 

 they remain with us longer, and these contentions 

 are protracted till late in the autumn. The pugna- 

 cious disposition of the argus butterfly soon deprives 



