316 New Forms of the Genus Delias (Pieridae) 



3 mm. wide, from vein 6 to the inner margin, narrowing anteriorly 

 and posteriorly. 



Underside of fore wing with broader distal black. A subapical 

 lemon-chrome spot divided by vein 8. Hind wing with a snow-white 

 subbasal streak in 7. Below the cell in lc an oblong spot of nopal 

 red (1) lying in a white band spotted with bluish-grey near the cell and 

 covered with bluish-grey scales on the other side. This band continues 

 from the lower edge of cell as a large discal straw-yellow patch 

 becoming broader anteriorly ; its edges are clearly defined, the upper 

 one passing beyond vein 6 ; the lower, straighter, and not quite reach- 

 ing end of cell, the anterior end bounded by the red submarginal line. 

 Submarginal red line placed more proximal than in alepa and reaching 

 the costa ; the space between it and the margin, from costa to vein 4, 

 is snow-white. Basal edge of wing from costa to middle of inner 

 margin powdered with yellow. 



? . Upperside with greatly extended black ground-colour. Fore 

 wing with creamy-white area for two-thirds of inner margin, its outer 

 edge parallel with outer margin, curved round just above vein 3 along 

 inside of cell to base. Hind wing with white proximal half showing the 

 colour of the underside through it, extending to end of cell, posteriorly 

 to basal two-thirds of inner margin, anteriorly following the discal 

 patch of the underside. 



Underside of fore wing with proximal straw-yellow area of same 

 shape and size as on upperside. A subapical line of six lemon-chrome 

 spots only divided by veins. Hind wing as in the $ . 



Length of fore wing : $ ? 26 mm. 



Menoo Valley and Mount Kunupi, 3,500 to 6,000 feet, November to 

 January. A small series of 3 $ and three ? 2 . 



23. Delias aruna (Bdv.). Variation. 



On the coast of Geelvink Bay at Wanggar, and twenty-two miles or 

 so inland at Nomnagihe, the forms aruna and irma Fruh. overlap and 

 some transitional forms were obtained by Messrs. Pratt. 



1. The hind wing with red markings very large; some scattered red 

 scales between the subbasal stripe and vein 7 ; fore wing with unusually 

 large yellowish-white scaling on the inner margin, with a scattering of 

 white scales as far as vein 2. A few specimens. 



2. Typical aruna Bdv., — majority of specimens; also from Mount 

 Kunupi, 6,000 feet, December to January. 



3. The red band reduced proximally and distally. Wanggar, one S . 



