Addenda. By L. B. Prout. 
137 
0. concreta Prout. Expanse 25—29 mm. Hindtibia of the J very broadly dilated, on the outerside conereta. 
concave, on the innerside with a groove containing a strong brown hairpencil (almost as in indefensa). Forewing 
narrow, especially in the $, distal margin not, or very slightly, concave anteriorly; hindwing not or scarcely 
produced at 1st radial. Lines of forewing oblicpie, more nearly parallel than in most of the species, median 
area narrow. Readily distinguished from macariata by these characters, particularly the less extreme shape; 
from minor , exigua, etc., by the <$ hindtibia. Langkawi I. (loc. typo.), Kedah and perhaps Lower Burma. 
0. indefensa Warr. Exceedingly similar to macariata, with which it has long been mixed. Distal mar- indefensa. 
gins, especially that of the hindwing, a little less regularly rounded; hindtibia of the $ still more broadly dilated, 
that of macariata being intermediate between those of indefensa and of exigua. New Guinea and its islands and 
the Moluccas, the type from Dorei; macariata is only definitely known to me from the Xulla Islands and the 
Moluccas, but Snellen’s type of elongaria was from Celebes and Semper’s Philippine record may well belong 
with it. 
0. exigua Swinh. This is also a separate species, distinguishable not only by its generally smaller size exigua. 
and narrower wings, but especially by the $ hindtibia, which is still less dilated than in macariata, almost ex¬ 
actly as in minor, which I have suggested may be a race of it. On Amboina, Sumbawa, Borneo, Banka Island and 
Hainan occur a number of other races or closely allied forms which will deserve closer study. — despica Prout, despica. 
described as a race of macariata, also seems to belong here. It is pale, generally weakly marked, in particular 
with the straightish central line of the hindwing very weak or obsolete; the terminal spots remain relatively 
well developed; in the $ the subterminal clouding of the forewing is very faint or wanting. St. Matthias and 
Squally Islands. 
0. eurycraspis Prout. 29 mm. Forewing narrow, apex slightly produced, termen gently sinuous, the eurycras- 
anterior concavity weak; whitish ochreous, antemedian line of forewing thick anteriorly, bent in cell, then P™- 
slender; both wings with a broad dark border, on the forewing just entering the cell and containing pale ter¬ 
minal spots as in atrofasciata. Tenimber, 1 $. 
0. pica Wileman db South. Perhaps the most elegantly marked of the black-and-white Ozola. Forewing pica. 
distinct from that of falcipennis in having a longitudinal streak from the cell-spot to the terminal band, the 
latter enclosing 3 white spots; hindwing with no black markings excepting a rather regular border, which like¬ 
wise encloses 3 irregular black spots. Luzon. 
0. intransilis Prout. Markings more nearly as in falcipennis, but the curved subbasal band interrupted, intransilis. 
the terminal band intermediate towards that of pica, but narrowed in the <$. Hindwing much as in falcipennis, 
but with somewhat more maculation in abdominal region, less extended transversely. W. Sumatra: North 
Korintji Valley. 
0. falcipennis Moore apiletica Prout. Blackish maculation more extended than in typical falcipennis apiletica. 
from N. India. Borneo and the Malay Peninsula, the type from Kinabalu. 
0. pantomima Prout. Very similar to falcipennis, on an average smaller, hindtibia of $ much more pantomima. 
broadly dilated and hollowed (about as in indefensa, pica, etc.), apex less falcate, distal margin less sinuous, 
costal edge often blackened, subbasal band a little less oblique, terminal band without a white subapical spot, 
confluent with posterior end of cell-spot, hindwing in <$ with reduced maculation. Kinabalu. 
0. pyraloides West has about the shape of pantomima, or the forewing perhaps slightly narrower, pyraloides. 
Markings perhaps still nearer to those of falcipennis, except that the terminal white spot of the forewing is 
confluent with the central white area. Differs from both in having a large midcostal black blotch on the hind¬ 
wing. Benguet, Luzon. 
0. apparata Prout. Probably near pantomima, a little larger and scarcely so narrow-winged. The apparata. 
terminal black band shows, better than most of the allies, its composite origin, both its parts interrupted, the 
subterminal only confluent with the terminal costally, at the 2nd radial broadly interrupted, behind the 2nd 
median wanting. Hindwing marked nearly as in pantomima. Korintji, W. Sumatra. 
0. ramifascia Prout (5 b), from Central Ceram, has the wings shaped as in albimacula, of which it ramifascia. 
might possibly be a race, but the white markings strongly recall the quite unrelated Hyposidra albifurcata 
Warr., from the Philippines. 
0. exotrigonia Prout represents ramifascia on Buru. The white of the hindwing is much extended exotrigonia 
proximally, covering the whole basal area, and the forewing has a very large white posterior patch proximally 
and the distal white patch more triangular. Buru. 
To p. 42, Celerena mitis: 
melanoprora Prout. Palpixs with 2nd joint predominantly black, not yellow, thorax with a well- melano- 
developed black anterior band. Bismarck Archipelago. prora. 
