New Butterflies and a Moth from Biak. 179 



scaling except at end of cell where a spot is formed. Five discal 

 streaks close to cell in 2-6, all widely separate, that in 6 the longer, 

 those in 3 and 4 the shorter. A streak in \c joined to the anal 

 spot. A submarginal row of 7 spots as in thule but larger. 



Underside similar to upper. On forewing the cell-folds divide 

 the two upper streaks into three spots. The discal spots are faintly 

 connected with spots near the cell. On hindwing a streak in 

 cellule 7 defined at base and becoming obsolescent. Cell streak 

 broader and better defined than above. 



$ with wings more rounded. Markings enlarged and paler, 

 submarginal spots white. 



Length of forewing : ^ 44*5 mm,, $ 45*5 mm. 



A small series obtained. 



PlERIDAE. 



4. Elodina biaka, sp. nov. 



Allied to umbratica, Gr.-Sm., from the Solomons. 



cJ. The black margin of the forewing is more irregular on its 

 edge than in imibratica. Below, the apex is washed with yellowish- 

 white and proximally of this the black above shows through as a 

 narrow band. 



$. Similar to ^. The hindwing below is yellowish. 



Length of forewing : (J 22 mm., $ 25 mm. 



A series of both sexes. 



5, Delias maudei, sp. nov. 



(Plate XXIII, figs. 3, ^, 4, $.) 



This fine species is intermediate between enniana, Obth., 

 and water stradti, Roths. 



J'. Ufperside white. Forewing with a narrow black apical and 

 outer margin ending below the first submedian and having its 

 inner edge deeply serrate, being invaded by triangular projections 

 of ground-colour between the veins. An oblique patch of black 

 scaling from vein 6-3 where it joins margin, cutting off 3 spots 

 of ground-colour, the one in 5 being the larger. Lower disco- 

 cellular scaled with black. Hindwing with a brownish -black 

 marginal border from middle of cellule 4 to first submedian, narrow - 

 ing at each end and being 4 mm. wide in cellule 2; its inner border 

 is nebulous and greyish from band below showing through, and a 

 spot of this colour invades the band in 3. 



