82 MR. A. G. BUTLER ON NEW LEPIDOPTERA. [Jail. 17, 



British Museum some time ago, with the request that (in case of 

 their proving to be new) I should describe them. 



Genus Sphinx. 

 Sphinx diffissa, n. sp. 



Wings above greyish ochraceous ; fringe alternately brown and 

 white. Front wings with an irregularly dentated waved black line, 

 edged interiorly with whitish from costa to near anal angle, and 

 united with apex near costa by an irregular oblique broken black 

 line ; basal area irregularly marbled and streaked with dark grey 

 scaling ; a whitish point at end of cell, and another quite white at 

 base. Hind wings pale grey, crossed by two white bands, bounded 

 on either side by blackish ; the outermost blackish border broad, 

 especially towards costa, and terminating at anal angle. Thorax 

 greyish ochraceous, marbled with blackish ; a yellow point on each 

 side of the collar. Abdomen black at base, with a yellow point on 

 each side ; a central grey-brown stripe, and on either side a series of 

 five golden-yellow spots, encircled with black. Wings below pale 

 greyish ochraceous ; a whitish band traversing the wings from costa 

 of front to anal angle of hind wings. Body pale greyish. 



Expanse of wings 3 inches 6 lines. 



Hab. Buenos Ayres (Burmeistef). B.M. 



Allied to (S. Carolina and S. lucetius. 



Genus Pericopis, Hubner. 

 Pericopis rosina, n. sp. 



$ . Wings above brown ; front wings with three broad and almost 

 connected semihyaline bands, the first at base, the second from 

 centre of costa to near anal angle, the third (just beyond and 

 almost touching the second) from costa to near centre of outer 

 margin ; a red point at base. Hind wings blackish, with a narrow 

 submarginal, anal, rosy, macular band, and two spots of the same 

 colour between median and subcostal branches ; three or four nearly 

 marginal anal white points ; fringe brown. Body blackish. Wings 

 below rather paler ; front wings with darker basal area ; apical area 

 exhibiting two broad white patches in place of the two exterior 

 bands of upper surface. Hind wings with red spot at base ; outer 

 rosy spot of submarginal series wanting. Abdomen with brown 

 centre, flecked on each side with squamose creamy points, and ter- 

 minating in two golden-yellow spots. 



Expanse of wings 2 inches 8 lines. 



Hab. Ega (Bates). B.M. 



Allied to P. leucophcea of Walker. 



Genus Eucyane, Walker. 



ElJCYANE HYSTASPES, n. Sp. 



Wings above black, basal area brilliant metallic green ; front 



