ATELLA. 1G5 



Genus X. ATELLA. 



ARGYRONOME, IsSORIA, 11 libit. 



Argynnis God 1 , <|r. 

 Phalanta IJorsf. 



Head broad, hairy, the hairs on the crown long. 



Eyes prominent, nearly round. 



Maxillce longer than the thorax. 



Labial Palpi divergent, ascending, rising considerably above the forehead. Basal joint very 

 short, curved ; second long, broad anteriorly, very much swollen, scaly and hairy, the outer 

 side of the anterior surface with a fringe of very long hairs, the back with a short tuft 

 towards the apex ; third joint not one seventh the length of the second, acicular, scaly. 



Antenna; fully three fourths the length of the body, terminating in a short but rather 

 gradually thickening club rounded at the apex, with its articulations more distinct than 

 the rest. 

 Thorax short, rather stout, ovate, hairy. 



Anterior Wings subtriangular, the apex slightly rounded ; anterior margin considerably arched, 

 one-half longer than the outer margin, which is equal, or nearly so, in length to the inner, 

 and, like this last, slightly emarginate. Costal nervure stout, extending but little beyond the 

 end of the cell. Subcostal nervure slender, lying close to the costal, until this latter curves upward 

 to the costa : its first nervule arising shortly before the end of the cell ; the second at rather 

 a longer distance beyond it; the third at about one third the distance between the second 

 and fourth ; the fourth about midway between the second and the apex, terminating on 

 the costa just above the apex. Cell short, but little more than one third the length of the wing. 

 Upper disco-cellular nervule extremely short ; middle disco-cellular curved, rather more than 

 half the length of the lower disco-cellular, which is slightly curved, and anastomoses with the 

 third median nervule at its origin, or shortly beyond it. Third median nervule moderately 

 curved. 



Posterior Wings obovate ; the margins all nearly equal in length ; the outer sinuate, sometimes 

 prolonged into a short tail at the termination of the third median nervule. Precostal nervure 

 simple, short, curved outwards. Costal nervure considerably curved at its origin. Upper 

 disco-cellular nervule slender, directed almost immediately outwards ; lower disco-cellular 

 short, slightly curved, very slender, almost atrophied, uniting with the median nervule 



May, 1848. y y 



