LEPIDOPTERA : NYMPHALID^. 387 



wings tawny in the male, ochre-yellow in the female, 

 both with a black line near the hind margins, within 

 which is a row of black crescents, and within the latter 

 a row of round black spots, the rest of the surface having 

 irregular black spots. Under the tips of the fore wings 

 are seven or eight silvery spots, and on the under surface 

 of the hind wings are more than twenty large silvery- 

 white spots. It flies in July and August. 



The Bellona Butterfly, A. bcllona, Godt, expands an 

 inch and three quarters, and the wings are tawny, with 

 two rows of black spots around the hind margins, and 

 at a distance from these is a row of round black spots ; 

 basal half of the wing with blackish blotches. 



The Myrina Butterfly, A. myrina, Godt., expands an 

 inch and three quarters to nearly two inches, the wings 

 tawny, bordered above with black, with a row of black 

 crescents adjoining the border, and a row of round black 

 spots at a distance from it ; basal half of the wings with 

 irregular black spots. It flies in May and June, and 

 again in August and September. 



The Genus ]\lclitcsa resembles Argynnis, but has the 

 under surface of the wings marked with various colors, 

 not silvery spots, and 'the caterpillars are covered with 

 blunt tubercles, beset with very short, stiff bristles. 



The Phaeton Butterfly, M. phaeton, Boisd. & LeC, ex- 

 pands two inches or more, and the wings are black, with 



from the skin. The skin is now suspended to the tuft, and the chrysalis to 

 the skin ; hut the chrysalis is some distance from the tuft of silk, to which it 

 must climb in order to cling to it by the hooks of its tail. To accomplish 

 this, it extends the rings of the body as much as possible, then, bending 

 together two of them above those by which it is clinging to the diy skin, it 

 catches hold of the skin higher up, at the same time letting go below ; and 

 by repeating this process with different rings in succession, at length it 

 reaches the tuft of silk, and fixes its hooks therein. Both the chrysalis 

 and the dry caterpillar-skin are now suspended from the tuft ; but the former 

 by its motion soon dislodges the latter, and is thus left suspended alone. 

 The whole of this operation is performed in a veiy few minutes. 



