326 un. G. Butler’s List of 
yellow colouring in this group seems either to fade very 
rapidly, or to be frequently replaced by white ; therefore I 
suspect it is merely variation. 
Genus PeTALiA, Walker (Type, P. plagiata). 
1. Petalia plagiata. 
Hypsa (Petalia) plagiata, Walker, Lep. Het. 2, 
p- 457, n. 19 (1854). 
New Holland (Stevens); Moreton Bay ( Gibbon). 
Type, B.M. 
Genus AGANAIS, Boisduval (Type, A. borbonica). 
In this genus the primaries are shorter, and the antennz 
of the males much more broadly pectinated than in //ypsa. 
1. Aganais subretracta. 
Hypsa subretracta, Walker, Lep. Het. 7, p. 1676 
(1856). 
Aganais aphidas, Hopffer, Monatsber. Kongl. 
Akad. Wiss. Berl. p. 422 (1857); Peters’ Reise n. 
Mozamb. p. 432, pl. 28, fig. 8 (1862). 
Natal ( Gueinzius). Type, B.M. 
2. Aganais undulifera. 
Hypsa undulifera, Walker, Lep. Het. 7, p. 1676 
(1856). 
Hab. —? (Doubleday). Type, B.M. 
The secondaries are sometimes yellow; so that this 
species only differs from the preceding in having a brown 
outer border to the latter wings. 
3. Aganais borbonica. 
Aganais borbonica, Boisduval, Faune Ent. de 
Madag. p. 91, n. 1,. pl. 15, fiz. 1 (1833): 
Aganais todamia, Herrich-Schiiffer, Lep. Exot. 
fie. 120 (1854). 
Hypsa antica, Walker, Lep. Het. 7, p. 1673 
(1856). 
Hypsa stipata, Walker, Lep. Het. Suppl. 1, p. 216 
(1864). 
“ Mauritius,” Botsduval, “ Cape,” Waihker, Hab. —? 
Norris. B.M. 
We have the type of Walker’s HZ. stipata; it differs in 
no respect from Boisduval’s species. 
