684 
EUTHALIA. By H. Ertihstorfer. 
thibetana. E. thibetana (Vol. I, p. 191), a Chinese species occurring in two local forms: thibetana Pouj., somewhat 
smaller, with paler yellow longitudinal bands than E. undosa Fruhst. which is in Vol. I, pi. 58 b figured erroneous¬ 
ly as thibetana. Apical spots smaller, on the hindwing the discal spots arranged in a straight r line. Western 
yunnana. and Central China. — yursnana Oberth. (Vol. I, p. 192) enters the Indo-Australian Region at Tseku. It may be 
recognized by the increased blue irroration of the hindwings, a characteristic of all Euthaliidi occurring in 
Yunnan. 
undosa . E. undosa Fruhst. (= themistocles Oberth.) (Vol. I, pi. 58 b as thibetana) (1907), differs from Euth. 
thibetana Pouj. (figured by Leech in ,,Butt. of China” 1893, pi. 21 f. 8) as follows: has the ground-colour 
paler, yellowish, not dark grey-green. Both wings have all the markings more brillant dark yellow, instead 
of a dull pale clay-colour. The yellow spots composing the median band of the forewing are more irregular, 
the upper ones more isolated. The median band of the hindwing proximally and distally deeply constricted, 
edged by black undulate lines. Hair of the body paler green. Under surface more richly marked with black, 
ground-colour paler, rather yellow than brown. Submarginal band on both wings broader, more prominent. 
On the forewing the median band extends farther toward the base, being margined with black, on the hindwing 
very strongly undulate; anal area clothed with pale green hair and scales. Antennae pale, not dark fulvous 
beneath. Mupin, West China. 
aristidcs. E. aristides Oberth. (Vol. I, pi. 192) is found together with E. undosa Fruhst. near Tseku at an elevation 
of about 6000 ft. 
alpheratyi. E. alpherakyi Oberth. from the mountains of Siao-Lu and Mupin, and from the lower region near Tien- 
Tsuen (2000 ft.). In Vol. I, p. 191 the locality is erroneously given as Tientsin, the port of the Province of Tchili. 
monbcigi. — monbeigi Oberth. (Vol. I, p. 192) from Yunnan, distinguished by the richer blue-grey shading. 
E. duda, one of the loveliest Euthaliidi, hitherto only known from the Himalayas, was recently disco¬ 
vered also on the Yunnan-Szetchuan border; hence we may distinguish between two separate local forms: 
dida. duda Stgr. (130 d); $ one third larger than the figured d, and correspondingly more broadly shaded with moss- 
green in the subanal area of the hindwing. Underneath both sexes are alike, pale green laved with faded blue 
at the base. White bands as above. Described from Assam wherein some years it is not scarce; occurs also 
in Bhotan, very scarce in Sikkim whence only a few specimens have become known (July and August). — 
sakola . sakota subsp. nov., figured by Oberthur (Lep. comparee 1912), came from Tseku (6000 ft. of altitude); it is 
smaller than duda , having the ground-colour of both sides paler and more uniformly green, without any blue 
beneath. On the forewing the white band is composed of much smaller, more isolated spots, on the hind¬ 
wing, however, it is broader, margined with paler blue distally. Yunnan, rare in collections. 
darga. E. durga Moore resembles duda , but is much rarer; on the forewing the white median band is broader, 
the subapical spots smaller, on the hindwing the median area steeper and distally dentate. Under surface 
chiefly blue instead of yellowish-green, the distal portion of both wings nearly grey-black. According to De 
Niceville, it formerly used to be rather common in Sikkim, but is at present very scarce in consequence of 
the destruction of the forests as a result of the growing tea-culture. Occasionally a fair number is brought 
from Bhotan, where it flies from June till August at elevations of from 3000—4800 ft. 
evelina. E. evelitia is one of the most widely distributed Euthaliidi, occurring on the main land from Assam and 
Burma to Southern Annam and being lately discovered also in Hainan, so that we may also expect it from 
Tonkin. Its southern limits reach from Karwar and Ceylon to Java and the Celebian Subregion. It is nowhere 
abundant, being always met with singly or in pairs; Dr. Martin therefore supposes that, like tigers or large 
birds of prey, certain individuals usurp a goocl-sized area, suffering no intruders. If I remember rightly, I never 
captured it in Ceylon, Java or Cebeles on bananas, but invariably on the ground, and in Sumatra they were oc¬ 
casionally observed on wet saw-dust spilt in the woods. Larva on Diospyros melanoxylon Poxb. and D. can- 
dolleana Wight., often congregating in surprisingly large numbers. It is green with a wine-coloured spot on 
every segment; the lateral, feathery spines longer than in the other Euthaliidi, pale green tipped with black. 
derma. Pupa short and broad, green, adorned with silver at the base of the thorax and at the back. — derma Roll., 
described from Masuri, but presumably from Assam, being since 1844 never found farther west. Above as in 
compta (130 b); $ much larger than rather brownish-green; under surface grey with broad brown bands. 
vat Iona. Forewing with one, hindwing with three red spots near the cell, paler in $. — vallona subsp. nov. of which 
