394 
ZETHERA. Bv H. Fbuhstobfer. 
The female of mixta somewhat recalls Elymnias ceryx from Java, and the $ of pimplea, but is duller and the 
upper surface is whitish green instead of white and violet. The hind wings are more broadly black bordered, and 
the terminal margin has only two, in place of 3, rows of white spots, as in pimplea. The under surface of the 
wings has no trace of violet, and is lighter on the forewings, darker on the hind-wings than in pimplea. 
Hindwing; the triangular marginal spots are higher and more pointed, the next following adnerval wedge-shaped 
spots are narrower and rounder, also always isolated. The contiguous submarginal band, which bounds these 
wedge-spots above, is broader, darker brown and fills the internomedian area, becoming obsolete, and is thus 
less sharply defined than in pimplea. $ expanse 43 mm. 36 mm; on Baziian, Febr.—March, 1898, disco¬ 
vered by W. Doherty. De Niceville figures a strikingly pale $ form, which varies from my i n the 
whitish instead of greenish tint of the streaks on all wings. Probably de Niceville’s $ belongs to a more ex- 
musides. treme dry form than my types. The dark brown 9 form is as yet wanting. — musides Semp. The q differs 
from musa in the enlargement of all the white spots and bands and presents the extreme albinotic variation 
mindorona. of musa, as diloris Fruhst. does that of pimplea. Zebu, Guimaras and probably Negros. — mindorona Fruhst. 
(90 d). <$: the whitish spots on the forewing subobsolete, the median pouch of the hindwing shorter, broader, 
and is resolved on the under surface into entirely isolated, partly dwarfed oval spots. $ of the brown Euploea 
type, similar to musa $ fa., but with reduced spotting on the forewings and much shorter yellowish streaks 
on the hindwings. Mindoro, sexes monomorphic. 
Specific group Amechania. 
hestioides. Z. hestioides Fldr. (90 d). This species, distantly connected through the same sexes of incerta, differs 
from all other species of Zethera in that the median nervules are given off beyond the cell, and if this 
character had any real significance, a genus could be better founded on hestioides than on incerta. $ and $ of 
hestioides somewhat resemble Ideopsis glaphyra Moore. decidedly larger and purer white than the 3$. 
Mindanao. 
incerta. Z. incerta Hew. (90 d). This splendid species is a true Zethera and, excepting as to the monomorphic 
sexes, differs much less structurally from the typical Zethera than does hestioides Fldr. as the median nervules 
are given off close to the lower apex of the cell in the hindwings. incerta appears to occur only on the 
northern arm of Celebes, and has not been observed south of Donggala. Both sexes mimic the very com¬ 
mon Ideopsis vitrea, Blanch., in company with which they are taken. The first described by me in 1909, is 
larger than the with much paler costal area of the forewing, and almost white cell only traversed by 
two black streaks. In the fore wing the interspace between the radials is yellow in the boldly curved submar¬ 
ginal projections, and in the <$ the ochre coloured parts of the hindwing are paler. The nervures appear 
to be more delicately black bordered. The peculiar genital organs described in the diagnosis of the genus are those 
of this species. North Celebes, Toli-Toli (taken by me in December). Donggala (August) discovered by W. 
Dohebty. 
Additions and C'onTftioiis. 
mentawicn. On p. 293 insert under the Ypfhima pandocus races; mentawica Hag. from the Mentawej Islands. — 
$ darker than that of corticaria Btlr. Anal eye-spot on the hindwing beneath larger, above smaller, its yellow 
ring narrower. 
plistia. p. 313 Lethe gelduba Fruhst. already occupied p. 312 and altered to plistia nom. nov. 
p. 326. obtusangula Fruhst. is an older name of Neurits a pupillata Fruhst. and already occupied in January 
1897 in the Societas Entorn. 
