NEW AND LITTLE-KNOWN BUTTERFLIES. 153 



This curiously commingled gyncindromorphous specimen is the first 

 I have seen from Asia. Bilateral monsters seem to occur more 

 frequently, and I recently described such a one in the Journ. A. 8. B., 

 vol. Ixvi, pt. 2, p. 552, n. 8 (1897), also from Sikkim. Dr. Adolf F ritze 

 in Zool. Jahr., vol. xi, p. 256, pi. xvi, figs. 5a, U> (1898), has recently 

 described a very remarkable commingled gynandromorphous example 

 of the summer generation of Hehomoia glaucippe, Tiinnasus, from Oki- 

 na^va in the Liu-Kiu Islands south of Japan. 



Genus AoA, nov. 



Male. Agrees with the genera Udaiana^ Distant, the type of which 

 is the " Pieris " cynis of Hewitson, and Lade, gen. nov., de Niceville, 

 the type of which is the *' Apjrias " lalassis of Grose Smith = ^''Pieris '* 

 indroides o{ Honrath, in the abdomen lacking the tuft of long and stiff 

 hairs on each side of the anal valves at their base Ijeneath present in the 

 genus Appias^ Hiibner, of which the genera Catophaga^ Hiibner, 

 Hiposcritia^ Geyer, Trigonkc, Geyer, and Tacliyris^ Wallace, are, in my 

 opinion, synonyms. Forewing, differs from Uda/ana in the coda being 

 straighter, the ov.ter margin being straight instead of convex ; the third 

 subcostal nervide longer ; the upper discoidcd uervule longer, arising from 

 the subcostal nervure nearer the apex of the discoidal cell ; discoidal celt 

 longer ; disco-celMar nervules upright instead of being strongly outwardly 

 oblique. IIindwing, costcd nervure much shorter. FoEEWiNG, differs 

 from Lade in being broader, the apex rounded instead of falcate ; third 

 subcostal nervide three times as long. Hindwing, costa convex instead 

 of straight. Nearest to Ihiphinaj Moore, differing entirely in fncies, 

 Forewing, disco- cellular nervules upright instead of outwardly oblique. 

 Antennce in proportion much longer and stouter. Palpi longer, 

 especially the third joint. Typo, " Pieris " c^fnis, Vollenhoven. 



(]) AoA AFFiNis, Vollenhoven. 

 Piens aflin'i.-i, Vollenhoven, Fauna Ent. TArch. Inclo-Neer., Fierides, p. 40, n. riS, 

 pi. V, fig. 2, ?««?/! CI 8 C 5) ; id., Wallace, Trans. Ent, See. Load., third sericF, vol. iv, 

 p. .331, n. 6 (18C7) ; id., Hopffer, Stet. Ent. Zeit., vol. xxxv, p. 23, n. 35 (1874) ; 

 7?r;Z<??jflw rt/^Vi.<, Butler, Proc. Zool. Soc. Lond., 187?, p. 57, n. 41; Hvphina a/finh; 

 Rothschild, Iris, vol, v, p. 439 (ISDS). 



Habitat : Celebes. 



Dr. A. R. Wallace wrote of this species ; " This insect beai-s 



such a curious resemblance to the female of Pieris ilhome. 

 20 



