150 Dr. A. G. Butler on the 
20. Delias glauce. 
3. Pieris glauce, Butler, P. Z. S. 1865, p. 451, pl. xxv. fig. 2. 
Borneo. Type, B. M. ; 
This species chiefly differs from the preceding in the 
absence of the subapical yellow markings from the under 
surface of the primaries. It is said to be common in Sumatra. 
21. Delias inferna. 
Delias inferna, Butler, Lep. Exot. p. 68, pl. xxiv. fig. 6 (1871) ; Grose 
Smith & Kirby, Rhop. Exot., Del. pl. 11. figs. 3-6. 
Type N.W. Australia ; two males and two females, Cape 
York and Port Moresby. B. M. 
Twelve examples, of which ten are from the Godman and 
Salvin collection. Hewitson also possessed a pair which he 
mixed up with D. aruna. 
22. Delias aruna. 
3. Pieris aruna, Boisduval, Voy. de ’Astr., Lép, p. 48 (1832); Hewit- 
son, Exot. Butt. ii., Pier. pl. iii. figs. 20-22 (1861). 
©. Pieris bajura, Boisduval, /. e. 
Two males and one female, Humboldt Bay; male, Bat- 
chian; male, Waigiou. B. M. 
From the Godman and Salvin collection ; there are also two 
males and a female in the Hewitson collection from Batchian 
and Waigiou. 
23. Delias Honrathi. 
@. Delias Honrathi, Mitis, Iris, vi. p. 134, pl. iii. fig. 1 (1898). 
Ralum, New Pomerania. 
This may turn out to be only a dimorphic form of the 
female of D. madetes, from which it principally differs in the 
white instead of yellow ground-colour of the upper surface 
and in having most of the spots on the under surface of the 
primaries white. 
24, Delias madetes. 
Pieris madetes, Godman & Salvin, P. Z. S. 1878, p. 733. 
Male and female, types (coll. G. & 8.) ; male and female, 
New Ireland. B. M. 
25. Delias diaphana. 
Delias diaphana, Semper, Verh. Hamb. iii. p. 114 (1878): Reis. Phil. 
v.p 222, pl. xxxiv. figs. 3-6 (1890). . 
Mindanao and Davao. B, M. 
