ORTHOSTIXIS; CENTRONAXA; NAXA; ARCHAEOBALBIS; PINGASA. By L. B. Prout. 
o 
13. Genus: Ortliostixis Hbn. 
(see Vol. 4, p. 8). 
0. opisodisticha Wehrli (1 e). Nearest to cribraria in size and markings and in most structural charac- opisodisti- 
ters; antennal ciliation considerably shorter. More glossy winged, the round cell-spots larger; of the' differences 
in the markings the most striking is the presence of 2 rows of dots on the hindwing outside the cell-spot (in 
cribraria one only). W. China: Tatsienlu and Siaolu, only LA yet known. 
0. cribraria Hbn. amanensis Wehrli (1 e), from the Amanus Mountains, is a very small and delicate amanensvs. 
race, the fore wing slightly less broad, the postmedian of both wings running somewhat more basad. 
0. cinerea Rbl. (= impura Prout) (If). Recognizable at a glance by the grey ground-colour; ante- dnerea. 
median row of dots on the forewing strongly curved. Cyprus. 
14. Genus: Cleiitronaxa Prout 
(see Vol. 4, p. 8.) 
C. contraria Leech (Vol. 4, p. 9, pi. 1 d). This species occurs not only in Central China but also in Sze- confraria. 
cliuan. 
15. Genus: Jaxa Walk. 
N. angustaria Leech (1 e). We figure one of the LA which were bred by Mr. M. Barry, of Chung-king, angustaria. 
from collected pupae, as already noticed in our account of the genus (Vol. 4, p. 9). No further information 
has been received about the early stages or food-plants. 
3. Subfam. : Hemitheinae. 
1. Genus: Archaeobalbis Prout 
(see Vol. 4, p. 1 and Vol. 12, p. 45.) 
A. sordida Wehrli (1 e). Expanse 44 mm. Nearest to farinosa , but easily distinguished by its relatively sordida 
longer forewing, much more strongly dentate antemedian line, and complete absence of the white lines of the 
forewing and of the posterior stripe of the hindwing. Yarkand, only the type A known. 
A. farinosa Warr. (Vol. 12, pi. 8 c) has been characterized in Vol. 12, p. 46, but as the type was taken farinosa. 
at Lahul, N. W. Himalayas, at the high altitude of 12,300 feet, it has at least as good a claim to be considered 
Palaearctic as Indian. The greyer colour and the absence of reddish markings distinguish it from most Archaeo- 
balbis. 
A. usneata Feld. (= hypoglauca Hmps.) (Vol. 12, pi. 5 g) is another border-line species, known from usneata.. 
Kashmir Valley as well as Sikkim. Differs from most of the green Archaeobalbis in shape (hindwing less elon¬ 
gate at abdominal margin), admixture of small whitish glaucous patches on the upperside, and absence of 
a dark submafginal band on the underside. 
2. Genus : Piiigasa Moore 
(see Vol. 4, p. 11, Vol. 12, p. 47 and Vol. 16, p. 10.) 
P. alba Swinh. brunnescens Prout (Vol. 4, pi. 1 e, as alba). This form from Japan and E. China, not- brunnes- 
withstanding some minor variability, has proved to be a good race, even if not a separate species, distinguished cens - 
from the typical alba of the Khasis (vol. 12, pi. 8 b) by its ochreous-brownish irroration and the intensely 
black postmedian line; the latter is also discernible on the underside, as a black proximal boundary to the 
grey-brownish submarginal band. — albida Oberth. (1 f) will perhaps prove synonymous with brunnescens but albida. 
the type, here figured, is perhaps rouncler-winged, scarcely so brown, and lacks the subterminal band of the 
hindwing beneath. Tse-kou, Chinese Tibet. — ab. (?) alboapicata Sterneck, founded on a A from Tatsienlu, was alboapicata. 
named from the presence of a white apical spot on the forewing beneath, about as in pseudoterpnaria ; but as 
this is never entirely wanting in any form of alba, the name is perhaps unnecessary. 
P. aigneri Prout (1 f). 3rd joint of palpus a little longer. Cell-marks about as in brunnescens or slightly aigneri. 
narrower; postmedian fine and sharp, the lunules not so deep as in pseudoterpnaria , forewing beneath less 
clouded proximally than in that species, genitalia very different. Japan: Takao-San, only the type A known. 
P. lahayei Oberth. (Vol. 4, pi. 1 g). The early stages have been made known by Chretien, who found larvae lahayei. 
at Gafsa, feeding on the leaves of Rhus oxyacantha in October and November and Zizyphus lotus in May. Larva 
short, rugose, thickened on the 3rd—5th abdominal segments, tapering anteriorly and posteriorly, segmentation 
