( 335 ) 



base. Posterior wings with the basal lialf bright yellow, the outer half brown lilack 

 with a ver^' broad submaiginal baud of eonfluent red spots widening towards the anal 

 angle where the red colour gradually merges into the liasal yellow. 



Expanse of wings : 3| inches. 



Hab. Biak. 



Near D. hagoe Wall. ; the principal difference consists in the row of orange spots 

 on the posterior wings of the female of D. eupkeinia, which are not represented in 

 that sex of D. bagoe. A series of two males and two females is in the collection. 



21. Delias dorothea .Mitis. 

 Ivio females are in the collection. It is very near to Delias enniana Oberthlir, 

 luit differs in ha\iug the oblique dark baud at the end of the cell elongated to the 

 dark outer-marginal band on the anterior wings, and on the posterior wings the 

 mai-ginal band is broader and extends round the wings to the apex. On the underside 

 it closely resembles D. dice Vollenhoven, but the dark apical and outer marginal area 

 of the anterior wings is less extended and tapers sharply to the end of the submedian 

 nervm-e. On the posterior wings the dark outer band is narrower, and on both wings 

 the spots in the dark area are pale yellow and less distinct. 



22. Delias euryxantha Hourath. 

 Two males and three fouaU's of this tine species. 



23. Appias ada. 



One female only. 



24. Appias liberia Cram. 



Two examples, both males. 



25. Appias celestina Boisd. 

 A good series of both sexes. 



26. Appias paulina Cram. 

 A long series of both sexes from the Island of Biak. 



27. Appias korridona sp. nov. 



Fe.malp:. — Upperside of both wings yellowish white, very broadly bordered with 

 brownish black which extends over the outer third of the wings. On the anterior wings 

 the dark border extends oxer the basal half of the cell, the disco-cellular nervules are 

 marked with a narrow black streak, the inner edge of the dark border parallel with 

 the outer margin is irregular, slightly indented betweeir the middle and lowest 

 median nervules, and there is an indistinct jjatch of grey scales above the upper 

 discoidal nervule. On the posterior wings the inner edge of the dark border is 

 irregularly defined and irrorated with the vellowish white scales of the basal two-thirds 

 of the wings. 



Undm'side : the dark border towards the apex of the anterior wings is tinged 

 with pui-plish white, in the middle of which is an indication of two whitish .spots ; 

 the base of the wings and about one half of the cell and the space above is pale 



