Head dark grey, palpi nearly white, antennae black, ringed with white. Abdomen pale fulvous.
Exp. alar. 1 un. 10 lines.
Habitat: New Holland.
This fine species was first described by Mr. White in the Appendix to Captain Grey's Narrative. He then expressed the opinion that it was nearly allied to Castnia and Coronis. The generic characters given above will fully justify this view. In fact we can only regard it as the Australian representative of Castnia.
The under surface of this species is beautifully varied with black and orange, but I may refer for a more detailed account to the work above mentioned.
Synemon theresa.
Anterior wings above greyish, the disc varied with longitudinal pale and fuscous dashes, beyond the middle the pale dashes almost form a transverse band, followed by a series of dark spots, margin brown slightly varied with white; cilia grey. Posterior wings fulvous-brown at the base, marked with a clear fulvous spot, beyond this, fulvous with a transverse macular band, the margin itself black; cilia grey. Below, the anterior wings orange, with the outer margin narrowly black, before the apex are three or four black spots. Posterior wings greyish in the male, in the female nearly as above, but paler.
Head, thorax, and abdomen grey above, whitish below; antennae black, ringed with white.
The posterior wings of the male are of a somewhat castaneous hue above, and less clearly marked than those of the female.