216 Mr. H. G. Smith on Four new 



XXXII. — Descriptions of Four new Species of Butterflies from 

 Omei-shany North-west CJiina^in the Collection of H. Grose 

 Smith. By H. Grose Smith. 



Euthalia strephon. 



Upperside. Olivaceous green. Anterior wings crossed 

 beyond the middle from the costal to the submedian nervures 

 by a pale greenish - yellow band, widest on the costa, 

 narrowest between the two upper median nervules ; a small 

 yellowish somewhat elongate spot near the costal margin and 

 a larger oval spot of same colour at the outer edge of the 

 band beneath it ; the space between and on each side of the 

 dark bars which cross the cell is also pale greenish yellow. 

 Posterior wings with a pale greenish-yellow curved band 

 following the contour of the outer margin from the middle of 

 the costa, gradually narrowing and becoming obsolete towards 

 the lowest median nervule ; an oval dark ring crossing the 

 cell and an indistinct submarginal row of dark green hastate 

 spots. 



Underside. Olivaceous yellow. On the anterior wings the 

 yellowish-green band is more clearly defined and edged on 

 each side with black, narrowly towards the costa, gradually 

 and irregularly becoming broader towards the submedian 

 nervure, where it ceases. Posterior wings with the pale 

 greenish-yellow curved band as above, bordered on each side 

 with olivaceous green, the space round the spots in the cell 

 and on the outer margin being the same colour as the central 

 band. 



Expanse of wings 2^ inches. 



Nearest to E. omeia^ Leech, which it resembles in colour, 

 but the posterior wings are very different. 



Five specimens were sent^ apparently all males. 



Euthalia irruhescens. 



Male. — Upperside. Anterior wings with the basal half 

 dark green, almost black, the outer half paler and slightly 

 metallic, the veins, with streaks between them on the paler 

 portion of the wings, being the same colour as the basal half ; 

 the cell is crossed in the middle by an irregular crimson 

 bar, and there is another crimson bar, narrower and somewhat 

 indistinct, at the end of the cell. Posterior wings the same 

 colour as the basal half of the anterior wings, being paler 



