124 
CHLOROMMA; IODIS. By L. B. Prout. 
antigone. 
rubricosta. 
inconcin- 
naria. 
euethes. 
detracta. 
parallel- 
aria. 
simplex. 
flavitincta. 
Uliana. 
mimica. 
H. antigone Prout. Cell-dots again larger, with pale circumscription; white lines much weaker; ter¬ 
minal brown line strong, fringe-spots large, grey-brown, absorbing or supplanting the red dots on a white line 
which ornament the bases of the fringes in the two preceding. In addition, the hindwing is appreciably longer 
and narrower, with slightly stronger tail. Khasis. 
H. rubricosta Prout (14 c). Less bluish green than rubrimargo, angle of hindwing slighter, lines weak, 
the rosy costal edge of forewing and the white, rosy-tipped fringes characteristic. Tonglo, Sikkim, 10,000 feet. 
Also known from Bhutan and Indian Tibet. 
C. Antenna of $ pectinate. 
H. inconcinnaria Leech (14 d). Near rubrimargo (12g), the lines similarly dentate and posteriorly ap¬ 
proximated, but without the red terminal line and fringe-spots, the fringes themselves less white. The green 
ground-colour moreover less bluish, but the sole rubrimargo (race ?) yet known to me from W. China (Ta-tsien-lu) 
is also less bluish than the Indian form. Antenna of $ quite shortly pectinated. W. China. 
H. euethes sp. n. (Suppl.-Vol. 4, pi. 1 e). Shorter and squarer-winged than rubrimargo (12 g) and of a 
less bluish green (not or scarcely bluer than the ‘'deep lichen-green ” of Ridgway), costal edge of forewing purer 
ochreous (less reddish), terminal line and fringe-spots brown rather than red. Structurally different in the 
shorter terminal joint of the palpus and probably the somewhat shorter pectinations, at least of the inner series, 
and the longer stalking of the 1st median of the hindwings. Kwanhsien, Szechuan (G. M. Franck), 17 July 
1930, type in coll. Prout. Poor specimens from the same locality, first half of July, were earlier sent to the 
late Mr. Joicey. 
H. detracta Walk. (= unduligera Btlr., vestigiata Swinh., annuligera Warr.) (Vol. 4, pi. 2 h). Very 
constant, notwithstanding the long synonymy; the white fringes and especially the white cell-rings (that of 
the hindwing large) are characteristic. N. W. India. 
H. parallelaria Leech (Vol. 4, pi. 2 h). Lighter and yellower green than the rest, $ pectinations rudi¬ 
mentary, hindwing with a more definite tail, which is rendered more conspicuous by a red-brown, black-mixed 
spot which occupies the fringe at this point. W. China. 
H. simplex Warr. (14 d), only known from a faded $, resembles a smaller, less broad-winged flavitincta 
but has less long pectinations, redder terminal line and fringe-spots and some red and white abdominal macu- 
lation, recalling section B. Northern mountains of Formosa. 
H. flavitincta Warr. (14 d). This species and the following are likewise only known from the type 
specimen, in both cases a $. Antenna strongly pectinate, flavitincta is of a bright green, with the markings 
very faint, excepting the postmedian spot at the hindmargin of the forewing. Khasis. 
H. liliana Swinh. (15 a). Still larger than flavintincta and of a lighter and more bluish green (though the 
figure is too light), the postmedian line well developed. The palpus, which is normal (i. e., short) in flavitincta, 
is unusually elongate, with the terminal joint long, raising some doubt as to its retention in Hemistola. Khasis. 
97. Genus: Cliloromma Warr. 
Perhaps an unnecessary genus, founded for the reception of a single species, which differs form the 
acute-winged members of Gelasma in the absence of the $ frenulum, from Hemistola in shape and colouration, 
from typical Iodis in that the 1st subcostal of the forewing arises from the cell, anastomosing with the costal; 
scaling opaque. The ^ is unknown. 
Ch. mimica Warr. (14 d). Easily known by its shape, colouration and the large black spot of the hind¬ 
wing; this is present also beneath, though slightly less large. Only known from the Khasis. 
98. Genus: Iortls Hbn. 
A moderately extensive genus, but chiefly Palaearctic and Indian, only straggling into the Sunda Islands. 
It seems to be directly derived from the more widely distributed Gelasma by the loss of the frenulum. As 
there is no other absolutely constant distinction, so far as is yet known, the correct generic reference of $$ is 
occasionally a matter of conjecture, but there are two further characters which are generally of great taxo¬ 
nomic value, the long terminal joint of the $ palpus (of quite rare occurrence in Gelasma ) and the stalking 
of the 1st subcostal of the forewing with the others; in a few true Iodis, however (as judged by the frenulum) 
this vein arises from the cell, as is usual in Gelasma. On an average, the scaling is thinner than in Gelasma, the 
wings often appearing subhyaline or iridescent. 
