658 
EUTHALIA. By H. Fruhstorfer. 
t lie name type, is exceedingly scarce; described here from the excellent figures of Distant’s and a number of 
specimens found in the Tring Museum. <§ somewhat like indochinensis, but with more blue on hindwing; $ 
resembling a normal adima $, with two fine, white costal spots on the forewing; hindwing suffused with a 
lovely milky blue, marked in the subapical area with two delicate green stripes. Malay Peninsula; Dr. Hagen 
irma. observed it also in North-Eastern Sumatra. —- irma Fruhst. (132 a) $ above like Distant’s figure of xiphiones 
Btlr., but the black markings of the under surface show through more clearly above. But the under surface 
of the primaries differ considerably in the unusually broad double series of submarginal spots, which are placed 
more closely together and are at least four times as broad as in xiphiones ; moreover, all the black dots on the 
undersurface of the hindwings are more distinct. $ approaches Moore’s figure of sedeva (Lep. Indica, Vol. 
Ill, pi. 223 f. 1 c), but the white subapical spots are narrower and more closely connected, and there is in ad¬ 
dition, nearer the apex a second, triangular white dot. The white discal spots which in sedeva Moore are very 
conspicuous, are in irma obsolete, a feature which it shares with indochinensis Fruhst. from Tonkin. The under 
surface is of a most vivid colour and delicately marked; the ground-colour a dull blue-green laved with whi¬ 
tish-grey. On the forewing the apex as well as the subapical and discal spots are clear white, likewise the broad 
median band on the hindwing. The ultracellular and submarginal areas are pale brown shaded and spotted 
with vandyck-brown. The hindwings with a submarginal row of eight sagittate spots dusted with moss-green 
peripherically. 
telchinia . E. telchinia Men. (132 b) is figured here for the first time, together with its two hitherto unknown 
seasonal forms. The smaller $ belongs to the dry period, whereas the larger one of which we figure the under 
aphidas. surface, and which has been described.as aphidas Heu\, is the form of the rainy-season. Even the <$<$ show 
some difference due to the seasons, those of the dry season being pale grey, those of the wet season deep 
brown. The $$ of the winterform lack the brown submarginal band of the hindwings and have the ground- 
colour paler ochre-yellow, telchinia is rare in Nepal, Sikkim and Bhotan, but quite abundant in the Khasia 
Hills in Assam. In Sikkim it flies between April and October, not above 3000 ft. 
whiteheadi. E. wliiteheadi Crowley, one of the loveliest Euthaliicli, is probably a good species, replacing telchinia 
in Hainan. Above black-brown suffused with olive-green; forewing with two large pale blue-green patches in the 
cell, several small white ultracellular spots and a submarginal stripe of lovely pale moss-green, starting at the 
apex and, gradually widening, extending to the anal angle. On the hindwing a pale green submarginal band, 
enclosing several indistinctly black lunular spots and edged clistally by a broad black terminal border. $ has 
the band of the hindwing wider and more blue-green, and the transparent white spots on the forewing larger. 
Under surface deeper red-brown than in telchinia -$, the hyaline spots reduced. From several specimens of the 
Tring Museum. Hainan, apparently not very rare. 
E. cocytus, a much disputed species from Siam described already in 1787 by Fabricius, and correctly 
identified by Moore in 1896. cocytus varies greatly in its colouring according to the locality, three local forms 
satropaces. being known in Farther India alone: satropaces Hew. of which I possess specimens from Lower Burma, occurs 
throughout the year inTenasserim and the Mergui Archipelago, g with very broad pale grey terminal area of the 
cocytus « hindwing and pale ochreous underside, just as it appears in Moore’s figure. — cocytus F. is whitisli-grey 
beneath, with darker grey outer border of the hindwings above. $ with larger, white, grey-dusted subapical 
spots on the hindwing than in satropaces. I took this form in Siam, in January and February at an altitude 
ambrysusi of about 1000 ft. —- anibrysus subsp. nov. (132d as cocytus) is the darkest form of the collective species; hav¬ 
ing the marginal border of the upper surface of the hindwings dusted with brown; with smaller apical 
spots of greyish-wliite than in the of the two other forms. Under surface deeper yellow than in cocytus, 
Avith more conspicuous black-brown undulate bands, particularly on the hindwings. It is not impossible that 
ambrysus may be only the wet-season form of cocytus ; the types at least were taken during the rainy season. 
June, July, Than-Moi, North Tonkin. Clasping organs of the simplest possible structure, hardly to be distingui¬ 
shed from those of E. lepidea and E. japis cocytina ; but the valve is somewhat more curved and more distinctly 
excavated than in E. japis, cocytina and E. javana ; uncus more delicate than in E. lepidea, not clistented in the 
middle as in E. javana. 
E. godarti replaces cocytus in the Macro-Malayan Region, but although the deviate in colourign 
considerably from cocytus, the $$ differ but slightly both in colour and markings from the continental form. 
The sexual organs are rather more slender than in cocytus, lepidea and cocytina. Uncus sharp pointed, in the 
middle slightly distented. The black scent-scale spot on the upper surface of the hindwings larger than in 
cocytus. The'cJcJ differ from those of E. cocytina in having on the under surface of the forewings in the middle 
of the inner margin a very distinct, glistening scent-area, that had hitherto escaped attention, since even Shel- 
