basiplaga. 
g a mb it a. 
ca'issa. 
albistri- 
gella. 
semifascia. 
meta- 
melaena. 
microleon. 
700 CAISSA; OLONA; TRICHOGYIA. By Dr. M. H eking. 
C. basiplaga sp. n. (88 a). Forewing brownish pale yellow, with a large characteristic jet-black basal 
area which projects distally at 1 b and 1 c, but does not reach to the costal margin, and into which a yellowish- 
white basal longitudinal streak enters on 1 b. A similar jet-black spot is situate behind the cell-end between 
2 and 5. Right lief ore the margin there is an undulate whitish transverse line irregularly bordered by blackish 
dusting. 7 is stalked with 8—10. Hindwing reddish-grey. Expanse of wings: 21 mm.' Sikkim, found in August 
at an altitude of 7000 ft.; type in the British Museum. 
46. Genus : Caissa gen. nov. 
Apparently allied with Ceratonema, but 6 —(- 7 of hindwing arise together from the same place or stalked. 
Antennae of and 9 plain. Palpi somewhat appressed upcurved, not quite reaching to vertex. Posterior tibia 
with 2 pair of spurs. 8—10 of forewing stalked, 7 separated from them, but mostly from the same place or 
stalked. 11 straight, but in a strongly bent towards 12. 
Type of genus : C. ca'issa Her. 
C. gambita sp. n. (88 a). Pale yellow, brownish on the inside of the tegulae and on the terminal tufts 
of the thorax. Abdomen brownish dorsally. Fore wing with a double blackish-brown oblique transverse line, 
filled inside with silvery grey, followed by a somewhat undulated indistinct postmedian line which is very 
much excurved in the centre of the wing and extends from % of the costal margin to the tornus. Parallel to 
the straight transverse line, a dentate dark transverse line extends from the inner margin to vein 2, being 
widened into large spots on 1 b and 1 c. The area between the median and postmedian lines may be more or 
less clouded. Margin with a more or less complete row of dark dots. Hindwing tinged ochreous or brownish, 
with a characteristic dark inner-marginal spot at the tornus. Expanse of wings: 23—30 mm. India. $ type 
from Khasis, q type from Travancore (Tring Museum). 
C. ca'issa sp. n. (88 a). Body more darkened blackish-brown than in gambita ; frons, distal edges of 
tegulae and end of thorax purer white than in gambita. Forewing pale yellow, with a similar straight oblique 
band as in gambita, but it disappears more owing to blackish dusting of the costal-marginal half of the basal 
area. From the centre of the postmedian line a line branches off to the centre of the inner margin, the space 
between it and the oblique band is filled with light brown, another line parallel to the postmedian line extends 
from the origin of 3 to the inner margin, the veins being also dark there, so that several light areas are produced. 
Another brown triangular costal-marginal spot before the apex. Hindwing faded with a brown tinge, another 
dark spot above the inner-marginal spot at the tornus. Expanse of wings: 26 mm. Khasis, in October. $ type 
in the Tring Museum. — It may be an extreme aberration of the preceding species. 
47. Genus: Oloua Sn. 
Palpi straight, upcurved, as long as the diameter of the eye. Antennae of $ only plain, thickened. 
Posterior tibiae with two pair of spurs. 3 -j- 4 of hindwing stalked, 6 and 7 separated. Allied to the following 
genus, but vein 10 of forewing from the cell. 
0. albistrigella Sn. Body and forewing greyish-brown, without any marking except a fine white, 
somewhat oblique line from 1 b to vein 6. Hindwing somewhat lighter grey. Expanse of wings: 15—20 mm. 
— Larva brownish-yellow, with numerous appendages; on cocoa-nut tree. 
48. Genus: TriHio^yia Hmps. 
Antennae of $ plain. Palpi short, upcurved. Posterior tibiae with two pair of spurs. Forewing: cell very 
narrow, 1 c strongly curved, 8—-10 stalked, 7 separated from them, 11 often arises basad to 2. Hindwing: 
3 -j- 4 stalked, 6 and 7 separated, 8 connected with the anterior edge of the cell in the middle by a long cross-vein. 
T. semifascia Hmps. (88 a). Body and forewing brown. Forewing with a milky white, slightly bent 
transverse streak from the centre of the inner margin to the origin of vein 2. A dark spot at the cell-end, a 
transverse spot distally to it, a dark apical spot. Hindwing dark grey. Expanse of wings: 18—20 mm. — Larva 
greyish-green or yellowish. Sides lighter, dorsum with black dots. A light line on the border of the ventral side. 
Dorsum with short tufts of spines. Posterior end of body extended into 2 spines; on Lagerstroemia and Coffea. 
— Malacca, Sumatra, Java. 
T. metamelaena Hmps. Head, thorax and anal tuft reddish-brown, abdomen dark grey. Forewing 
reddish-brown, scantily scaled blackish. Hindwing black. Expanse of wings: 12 mm. Sikkim. 
T. microleon sp. n. (88 a). Antennae of $ thickened and flattened. Palpi long porrect, of 2 or 3 fold 
the diameter of the eye. Dark grey; head, ends of tegulae and of thorax and under surface yellowish ochre. 
