308 Neio Forms of the Genus Delias (Pieridae) 



Underside of fore wing with lower two-thirds of cell from base to 

 apex white, this colour extending as a spot above vein 4 and sometimes 

 reaching the costa as a streak, extending to vein 2, sometimes to 3, and 

 to the inner margin. A series of 4 subapical spots, lemon chrome (iv), 

 the larger at the costa. Ground-colour fuscous-black (xlvi). Hind 

 wing fuscous-black. A coral-red (xiii) basal spot on the extreme basal 

 edge of costa. One specimen has this spot lemon-chrome. Other spots 

 lemon-chrome ; one in 7 at middle, one in cell below 6, one in 6 near 

 the apex and a costal streak above it ; postdiscal short strigae in lc, 

 2 — 4, sometimes faint, and a series of antemarginal dots on the folds. 

 A thin pale grey marginal line. 



? . Upperside of fore wing with slightly larger distal black area. 

 Hind wing with black apical margin about 2 mm. wide and tapering to 

 vein 5, below which the marginal line is thicker than in the 3 . 



Underside as in the 3 . 



Length of fore wing : 3 ? 24 mm. 



Menoo Valley, mostly at 4,000 feet, but also at 3,500 and 5,000 feet, 

 November to January, a series of 3 3 and two ? V . 



10. Delias aroae Ribbe yabensis subsp. nov. and ? f. brevifascia f. nov. 



Distinguished from aroae from British New Guinea and the Arfak 

 Mountains by reduced black apical area on the fore wing and broader 

 yellow band on the hind wing below. 



3 . Upperside of fore wing with distal black narrower, especially in 

 cellules 4 and 5. Hind wing with reduced marginal black. 



Underside of fore wing with the white area continued from veins 

 4 to 9, and the costal black forming a triangular patch over the upper 

 angle of the cell. The white spots beyond the cell vary in size and are 

 rarely absent as in the typical form. Subapical spots as in the type 

 form. Hind wing with broader yellow discal band, larger cellspot and 

 larger marginal spots. 



2 . There are two forms. The typical form is similar to the known 



? of aroae. Upperside of the fore wing with a black discocellular 



mark and the white area extending more or less into cellules 4 and 5. 



Hind wing as in the typical form. Underside as in the 3 , the discal 



band of hind wing with white ground colour as in type form. 



? f. brevifascia. 



Upperside of fore wing as in yabensis. Hind wing with a narrow 

 black margin of almost even width. Underside of fore wing as in 

 yabensis. Hind wing with discal band ending as a yellow spot between 



