306 New Forms of the Genus Delias (Pieridae) 



5. Delias ladas Sm. levis subsp. nov. 



The Dutch New Guinea form. 



$ ? . Upperside of fore wing with more extended white area, prin- 

 cipally in cellules 3-5, not to such an extent as in the race from Waigeu. 



Underside of fore wing with the cell white, also base of cellule 4 

 and with more or less white scaling in 5. 



Menoo River, 3,500 to 5,000 feet, November to January (Types) ; 

 Mount Kunupi, 6,000 feet, November to January ; Nomnagihe, 2,000 

 feet, January to February ; Angi Lakes, Arfak Mountains, 6,000 feet, 

 January to February ; Wandammen Mountains, 3,000 to 4,000 feet, 

 November. A series from these localities. Also from Mount Misresi ; 

 Arfak Mountains, 3,000 feet, January, one $ ; Coast district, Geelvink 

 Bay, November, one $ ; Momi, Arfak Mountains, 4,000 feet, Novem- 

 ber to December, one 3 one ? ; Oetakwa Kiver, Snow Mountains, to 

 3,500 feet, November to December, one 3 . 



The majority of these specimens belong to this form, but a few 

 typical examples occur. The type form comes from " German New 

 Guinea," and also occurs over British New Guinea, though a specimen 

 from the Hydrographer Mountains is like levis. 



6. Delias rileyi sp. nov. 



Allied to jordani Kenr., which is a species distinct from cunning- 

 puti Ribbe. 



3 . Upperside of fore wing with white proximal half which projects 

 distad along vein 2, slightly indented on veins 2 and 3 and more so on 

 vein 4. The cell is only slightly invaded at its lower and upper angle. 

 Hind wing with narrow black margin, broader between costa and 

 vein 5, then tapering off and becoming merged in the white area. 



Underside of fore wing with white proximal half. A basal costal 

 streak of cadmium-yellow (iii), where in jordani there is black scaling. 

 The white area does not reach end of cell, and below vein 4 reaches 

 farther distad than on the upper side. A subapical costal white stripe, 

 curved outwards to vein 5, thence downwards to 4 and just below this 

 vein connected by faint scaling to the edge of the white area. A sub- 

 marginal series of seven dots, the anterior and subapical four yellow, 

 the lower ones white. Hind wing with brown colour more blackish 

 than in jordani, markings deeper or cadmium-yellow. Costa white, 

 yellow at extreme base. A rounded yellow spot slightly white on its 

 distal edge in cellule 7 and touching vein 8 ; a little beyond this an 

 oblong white spot posteriorly edged with yellow, reaching from costa 

 nearly to vein 6 ; a small rounded spot in the cell below vein 6 ; a post- 



