OCHROTHRIPA; PHAEOTHRIPA; ARACHNOGNATHA; TRIORBIS; ELIGMA. By M. Gaede. 399 
27. Genus: Ochrothripa 
Palpi very long, also the third joint thin and long. Tufts as in Bryophilopsis, only the mesothoracal 
tuft is absent. Anterior tibiae as in Cryptothripa. Vein 8 of hindwing fused with the cell as far as the middle 
of the cell. Only 1 species in the Indo-Australian Region and one in Africa. 
0. leptochronia Trnr. is easily discernible by the pale yellow hindwing with a dark brown margin. Fore- Icpiochroma. 
wing white with a pale red-brown marking. Interior line widely excurved at the lower cell-margin. Dark scales 
in the centre of the cell and at the cross-vein. Median line also indistinct, excurved around the cell. Exterior 
line double, parallel to the middle line, brown behind it at the costal margin. Submarginal line indistinct, white, 
notched, parallel to the margin. 28 mm. 2 known from Queensland. 
28. Genus: Pliaeotliripa Hmps. 
Very different from the preceding genera. Palpi long, the second joint somewhat hairy only behind, the 
third short. Anterior tibiae hairy only in front. Forewing broad and short. Veins 10 + 8 + 9 on a long stalk, 
areole absent. Veins 4 + 5 of hindwing on a long stalk, 8 branching off from the centre ot the cell. Only 1 species. 
Ph. morena Sivh. Forewing dark brown with a lilac reflection, darkest at the base. A faded black spot moremt. 
at the middle of the inner margin. Traces of a curved interior line. Erect scales in the centre of the cell, and 
2 dots at the cross-vein. Exterior line of white streaks, incurved to the middle of the inner margin, a few brown 
spots before it in front. A submarginal row of black dots. 24— 26 mm. Malacca, Borneo. 
29. Genus: Arachnoguatha 
Similar to the preceding genus in the shape of the wings. The second palpal joint long, with thick hair 
above and below, the third short. Anterior tibiae hairy. Forewing with a long areole, but veins 7- 10 arise 
separately from it. Hindwing with a very short cell and an introangular cross-vein. Vein 8 branches off from 
the centre of the cell. Beside the type: meterythra Hmps. there is another Indian species belonging to this genus. 
A. meterythra Hmps. (37 g). Forewing olive green with an indistinct marking. Interior line bent, median meterythra. 
line double, exterior line oblique as far as vein 6, whitish, then undulate. Submarginal line of red dots, all the 
lines indistinct. A black dot in the centre of the cell. Hindwing pinkish brown, a black, white-edged spot at 
the anal angle. 35 mm. 1 $ known from Burma. 
A. metascotia Hmps. (37 g) is somewhat more marked. Forewing olive green. Interior line indistinctly metcscoiia. 
double, brown, with a dark spot at the inner margin. Black scales in the centre of the cell. Reniform macula 
round, edged with brown, with a brown centre. A brownish shadow from the inner margin to the reniform 
macula. Exterior line oblique, whitish, as far as vein 6, then parallel to the distal margin, brown, dentate. Sub¬ 
marginal line of brown notches with white scales outside. Hindwing greyish brown, with a spot at the anal 
angle as in meterythra. — singaporicola Strd. The colour of both wings may also be redder, the anal spot on singcpori- 
the hindwing chocolate brown. — 32 —35 mm. Assam, Singapore, Borneo. 
30. Genus: Trior bis Hmps. 
Proboscis exceptionally stunted. Palpi long, thin, oblique. Forewing not quite so much bent forward 
at the base as in Arachnognatha. Thorax with a broad tuft in front and behind. Type: annulata Sv.ji ., besides 
another beautiful Indian species. 
T. aureovitta Hmps. (31 d). Forewing red-brown, slightly tinged with pink. A gold-coloured band aurcoviita. 
below the cell as far as vein 2. Interior line brown, white inside, extra-angular below the cell as far as the ex¬ 
terior line and once more at vein 1, far inward between. Ring-macula and reniform macula with brown scales 
inside and edged with brown, small, round; the reniform macula connected with a dent from the exterior line. 
The latter brown, white outside; sharply projecting at vein 6, far inward in the submedian fold as well as at 
vein 1. Submarginal line whitish ochreous. Hindwing red-brown. The $ is darker on both wings, especially 
at the centre of the costal margin and in the cell on the forewing. The band below the cell brownish ochreous 
at the base. 42—50 mm. Assam, Malacca, Tonkin, Java, Buru. 
T. annulata Swh. (31 e). Forewing greyish brown, with 2 chocolate brown streaks at the base. Interior annulata. 
line brown, white inside, outward as far as below the cell where it is angular and inward. Ring-macula and 
reniform macula centred with grey, edged with brown, large, round, almost united. Exterior line brown, ex¬ 
curved behind the reniform macula, far inward in the submedian fold, almost as far as the interior line. Sub¬ 
marginal line whitish. Hindwing dark red-brown. 35 mm. Described according to 2 9? from Burma. 
31. Genus: ICligma Hbn. 
This peculiar genus was formerly ranged with the Hypsidae and has therefore been dealt with already 
in Vol. 2 (p. 71). It resembles them not only in shape and colouring of the wings, but also in a series of most 
