orpkrdna. 
cambrica. 
crutaria. 
stiff usa. 
webbi. 
brevipecii- 
nata. 
punctiuncu- 
1a. 
laria. 
174 VENUSIA; DISCOLOXIA. By L. B. Prout. 
in the sharpness of the markings, the uniformly dirty yellow-grey, glossy forewing having them nearly ob¬ 
solete, the black vein-dots small, much reduced in number, the light dots weak and inconspicuous. Hindwing 
also very weakly marked, the distal area darkened. The typical series came from Canton, but similar forms, 
larger and a trifle lighter, occur in several districts of Palaearctic West and Central China. — orphnina Welirli 
(14 d). Another rather small, darkened form, similar in the scheme of markings to sinotibetaria but smaller, 
d a rker grey and at once distinguishable by the dark yellow-grey hindwing. Rather prevalent 
at Mupin, Siao-lu and Tchang-kou; also known from Ta-tsien-lu, etc. 
65. Genus: Veiasislsa Curt. 
(See Vol. 4, p. 266.) 
This genus and the rest of the “ Astheninae ” should not, I think, have been interposed among the 
Larentiinae proper. Not only the smooth face and some details of the venation but also the genitalia show 
that they stand somewhat apart. One recent investigator, however — Prof. J. W. H. Harrison, in his “Ge¬ 
netic Studies in Oporabia" — inclines to derive Oporinia and Operophtcra from Venusia, thus lending some 
support to the Meyrick system of grouping in which I had had little faith. In any case, the Holarctic range of 
the 3 genera named points to their zoological antiquity. Forbes, who also considers Oporinia “close to Ven¬ 
usia”, treats the latter as a composite genus, including Nomenia (entirely Nearctic) and Discoloxia; I am in¬ 
clined to agree with him that the <$ antennal differences are here only sub generic. 
V. cambrica Curt. (Vol. 4, pi. 9 d). Recorded by Matsitmura from S. Saghalien in 1925, by Derenne as 
new to Belgium in 1926. About the same time, CoCKAyNE recorded finding and feeding the larva on birch in 
Aberdeenshire. A gynandromorphous specimen was recorded (but not described) by A. Doncaster (Ento¬ 
mologist, Vol. 10, p. 48) as having been taken at Sheffield. — ab. (lock?) erutaria Bsd. In a detailed ana¬ 
lysis of the variation, published in 1905, I pointed out that this has the ground-colour much whiter (less 
irrorated) than the name-type, the markings well pronounced, and that this form ..seems commoner in Scot¬ 
land and on the continent of Europe than in England 44 . ,,Switzerland and Savoy 44 (Boisduval). — ab. suf- 
fusa Prout. By a ‘■hair-splitting" which I would not now justify, I proposed this name for the aberration figu¬ 
red by Barrett (Vol. 8, pi. 349, fig. 1 c) and described by him as “suffused with smoky clouding, through 
which the markings show in darker colour". No locality was given, but I think it is only a somewhat ex¬ 
treme development of ab. loc. lofthousei Prout. — ab. webbi Prout. Schawerda notes a specimen taken in 
the Grossglockner district even more extreme than my type, only a narrow dark-brown line in the middle of 
the wing persisting. 
V. brevipectinata sp. n. (16 d). Pectinations of the a little shorter than in cambrica, mostly (ex¬ 
cepting a few of the longest) surmounted with fascicles of cilia of about their length. Smaller (26—27 mm), 
termen of hindwing less regular, with more noticeable projections at 3rd radial and 1st median. Further dis¬ 
tinguishable by the less black, near the costa more angulated postmedian line of the forewing and particularly 
by the more strongly marked hindwing, with less interrupted terminal line; on both wings the whitish band be¬ 
tween median and terminal areas is more noticeable. N. W. India: Dalhousie, type <$ in the British Museum; 
Kukli, a $ in the Tring Museum; a second $ in the British Museum, from Thundiani or perhaps Kashmir. 
V. punctiuncula sp. n. 28 mm. Closely like brevipectinata in antenna and wing-shape, but suffused 
with light-drab or drab-grey instead of white-grey, the hindwing weakly marked, more as in cambrica; ab¬ 
domen with a dark anterior spot dorsally; forewing with subbasal and antemedian lines somewhat angled 
outward at fold, a blackish costal mark close to the cell-dot; the postmedian, the brown line beyond it 
and all the 3 subterminals largely broken into very characteristic coarse vein-dots, the whitish band of 
brevipectinata suppresed; terminal line more broken (more as in cambrica), fringe somewhat spotted. Tu-pa-kb, 
near Mupin, 7400 feet, 30 August 1929 (Kelley-Roosevelt Expedition), 1 A $ (31 August) is relati¬ 
vely large (32 mm), broad-winged, median area rather broader and cleaner, the last postmedian and the 
brown line outside it more continuous, but fine; hindwing sharper-marked. A weakly marked, but not very 
fresh $ from Chinese Tibet (ex R. P. De jean) would with confidence be referred here but that the pectina¬ 
tions seem a trifle shorter still. 
66. Genus: Discoloxia Warr. (pr. subgen.). 
(See Vol. 4, p. 270.) 
Here again I have transposed a few genera in order to bring about a more natural sequence. For 
the specialized section B of Vol. 4 (p. 27) I have instituted a new genus, numbered 66 a (infra). 
D. laria Oberth. (Vol. 4, pi. 8 b). The figure does not give a very satisfactory idea of this species; the 
antemedian line almost always throws out at the fold an acute tooth which reaches the 1st postmedian or often 
