Pabl. 16. II. 1938. 
CIDARIA. By L. B. Prout. 
153 
C. fastigata Pung. (14 b). By a misprint or oversight, it was stated in Vol. 4 (p. 251) that this was fastigata. 
closely similar to the yellow-mixed form of silaceata (15e); this should have read “less yellow-mixed" (“weniger 
gelb gemischten”, Pungeler). Except in the less broad median band and acuter postmedian angle it rather 
recalls pryeri Btlr. (15 d). Its range extends to East Turkestan and East Bokhara. 
C. falsiloqua sp. n. (15 e), a <$ from Mt. Omei, dated 9 August 1907, has for many years remained in falsiloqua. 
my collection undescribed, in the hope that further specimens would come to hand. Mr. Burrows, who examined 
the genitalia in 1921, considered the structure to be so similar to that of pryeri that he would “suspect close 
affinity”. It has shorter 8th segment, shorter and blunter saccus, head of the “anellus lobe'' (if such it be; it 
seems to me to be at least fused to the base of the valve) less large; it shares with pryeri a pronounced con¬ 
cavity in the distal part of the valve. Very distinct from that species in the shape of the basal and median 
bands, the more silaceata- like colouring, the paler areas and the non-angled postmedian of the hindwing. Hind¬ 
wing somewhat darker than in normal silaceata, becoming rather abruptly whitish in the costal region; the 
large anterior terminal patch of the forewing and the conspicuous, though small one at the fold, together with 
some reduction in the development of the “wedge” markings, at least posteriorly, and the rounded central pro¬ 
jection of the antemedian, may aid in its recognition, but any of these characters may appear occasionally 
in the variable silaceata. 
C. silaceata Schiff. (15 e). As already noted at the head of the subgenus, this was made the type of silaceata. 
Warren's Diactinia. Forbes regards this species (and therefore its nearest relatives) as intermediate between 
two main groups of Larentiids: those with the discocellulars not biangulate and with coremata on the <$ ab- 
domina; and those with the discocellulars biangulate and no coremata. It has more or less the habitus of the 
latter but the discocellulars of the former, and the (small) coremata, when present, are situate on the 9th seg¬ 
ment, not on the 7th as in Ortholitha, Xanthorhoe, Euphyia (sens, lat.), etc. The silaceata group embraces a 
considerable number of Chinese and Indian species, most of which have hitherto been very insufficiently studied. 
In addition to the named forms enumerated below, Feichtenberger has just figured and described (1 March 
1936) a pretty $ aberration from Graz, lighter and more variegated with ochre-yellow, the median band a good 
deal mottled with white-grey, the subterminal wedge-markings elongate. — ab. boegli Strand ( = wehrlii Niepelt, boegli. 
diluta Metschl ) is a rare but recurrent aberration; forewing with a cream-yellow median area, containing in its 
centre the remnants of the normal dark band, namely a small costal or subcostal patch, including the cell-spot, 
and a second on the inner margin; hindwing paler than usual. Regensburg, Eulengebirge, etc. — ab. effusa effusa. 
L. Mull, is similar to boegli, the median dark spots less strongly reduced, the creamy band outside it running 
out in vein-streaks into the succeeding dark area. Spital-am-Pyrha, Upper Austria. — ab. loc. deflavata Stgr. deflavata. 
(Vol. 4, pi. 10 1). It was certainly inaccurate to confuse this dark mountain form with the umbrosaria of 
the far East. It was founded on Hubner’s fig. 303 and Guenee's “var. B”, from the Alps and Pyrenees 
respectively, and retains the structure and the acute antemedian of the type form. leuca Djakonov, lexica. 
registered as the prevailing form in Kamtshatka, though “ deflavata Stgr:' (perhaps really umbrosaria ?) also 
occurs with it, has the median area broadly and uniformly light-grey instead of black, the lines very indistinct, 
the cell-spot small, black. — ab. albomedia Djakonov, occasional in Kamtshatka, recalls silaceata ab. boegli, albomedia. 
median area entirely white, with only a few scattered light-grey scales and the black cell-dot; distal area gener¬ 
ally normal, but one extreme specimen has that area also predominantly white. I have no personal knowledge 
of these forms (or species), though an Ecliptopera from Tunkun, Sajan district (2 <$<$ hi my collection), with 
the median band less dark than in silaceata and the pale areas whitish and weakly marked, may be a race of 
leuca, if that is a species. In genitalia they agree well with dimita, but the terminal markings and the hindwing 
seem to preclude a union with that. I have not yet seen undoubted silaceata from any other than European 
localities. — Ochmann (Int. Ent. Zeitschr., Vol. 26, p. 295—301) has an account of his breeding silaceata , with 
description of the egg, etc. 
C. dimita sp. n. (15 e). At first sight extremely similar to those forms of silaceata which show little dimita. 
yellow in the distal area (i. e., the intermediates towards deflavata) and with a similar tendency to develop 
pale vein-streaks on the median band. Forewing with the black terminal line much more continuous, accom¬ 
panied proximally by a white line, both as a rule only interrupted by the buff veins. Hindwing with the cell- 
dot greatly reduced, on the upperside scarcely or not visible. Other distinctions — less reliable because more 
variable in both species — are the white (not yellow) colour of the 2nd line outside the postmedian, the reduced 
size of some of the dark spots beyond this, and the better development of two distal-subterminal spots, before 
and behind the 2nd median. The saccus (as also in the following Asiatic forms) is much broader and more 
rounded than in true silaceata and there are other small differences; Mr. A. H. Stringer, of the British Museum, 
has made some careful studies of the group, especially on material from the Oberthur collection. W. China 
and Chinese Tibet: Tse-ku (loc. typ.), Siao-lu, Tien-tsuen, Chia-kou-ho, Yaregong, Ta-tsien-lu, Tu-pa-ko, Tchang- 
kou. tranosphena subsp. nov. I have not adequate material for study, but have little doubt as to the status tranosphena. 
Supplementary Volume 4 20 
