XANTHORHOE. By L. B. Prout. 247 
on the left forewing (but not on the right) the costal vein anastomoses at a point with the anterior wall of 
the areole. 
A. perornata Walk. (24 h). By some inadvertence, or possibly the existence of a venational anomaly perornutu. 
(compare N. fulva), Meyrick referred this common species to Notoreas and it remained there until 1918; in 
every specimen which I have seen, the areole is undivided. Very variable in size and in the markings of the 
upperside; beneath more constant, resembling a well-marked specimen of the N. paradelpha group; on both 
surfaces the course of the median dark band of the hindwing is distinctive. The highly developed (very heavily 
chitinized) genitalic segments of the $ are always more or less exposed and are a curious feature of the species. 
Distributed up to 4300 feet. The form from the Lake Wakatipu district in said to be considerably larger 
than the northern one, but no correlated difference lias yet been discovered. The larva is stout, cylindrical, 
tapering very rapidly at head and tail, variable, one form being pale green with yellow-brown head and broken 
white lateral line, marked with black at the segment-incisions, the other form orange-brown with broad paler- 
dorsal stripe, etc. On Pimelia prostrata; very sluggish. 
A. regilla Philpott (24 h). 24—28 mm. Very near perornata , to which Meyrick would with confidence regilla. 
sink it. Forewing with apex slightly more rounded; pale bands more uniformly orange-yellow, only at hinder 
end inclined to become whitish, 4th. (i. e., outermost) complete band slightly less angular, subterminal often 
punctiform, in any case forming a streak-like or wedge-shaped longitudinal mark in cellule 3; fringe with 
the white spots narrowed and generally more tinged with yellowish. Hindwing with first dark band or line 
slender, nearly straight. Underside very sharply marked; the subcostal sinus of the subterminal line slightly 
less deep than in perornata. Dun Mountain (Nelson) etc.; “not very common, but probably to be found 
in all subalpine localities in the Nelson Province” and reaching Mount Cook. 
6. Genus : Xanthorhoe Hbn. 
(See Vol. 4, p. 222; Vol. 16, p. 84.) 
Face with projecting scales or tuft below. Palpus moderate or rather strong, rough-scaled. Antenna 
of (J pectinate (sections A and B) or more or less dentate and ciliate (section C). Forewing with areole double. 
Hindwing with discocellulars oblique, 2nd radial arising before the middle, or in any case not behind the cell¬ 
fold, 1st median not stalked. A genus of almost worldwide occurrence, very prominent in the New Zealand 
fauna. Type of the genus: montanata Schiff. 
A. Section: antenna of with 2 pairs of pectinations to each joint (D i - 
ploctena Turn.). 
X. pantoea Turn. (24 h). Very variable, but much smaller than the other species of the section, the pantoea. 
pectinations long, especially those of the outer series. Forewing glossy dark brown, with the median area little 
differentiated, the cell-spot large. Hindwing paler, the principal lines indicated. In one aberration the cell- 
spot is white or whitish, dark-outlined. In another the whole of the disc except the base, anterior part of median 
band, and a terminal band are brown-whitish. Victoria: Lome (loc. typ.) and Ebor. — viridicans subsp. nov., viridicans . 
from Queensland National Park (3000 feet), is very different in aspect but has the same structure and seems 
clearly conspecific. “Distinctly green, with well-defined basal patch and median band fuscous-brown, but the 
latter sometimes incomplete; minute white dots are sometimes present on the subterminal line” (Turner). 
X. nephodes Meyr. (24 i). Large in the <$, sometimes much smaller in the $, the wings strikingly elongate nephodes. 
costally. especially the hinclwing; altogether with the facies of an Ortholitha, of which genus it should probably, 
in strict logic, be made a section. Pectinations somewhat shorter than in pantoea , equal. New South Wales 
and Victoria, type from Mount Kosciusko, 6500 feet. 
X. argocyma Turn. (24 i). Pectinations comparatively short and the proximal pair on each segment argocyma. 
shorter than the distal pair, thus assimilating to the formation found in a few African Xanthorhoe. Coloration 
and pattern also more normal for the genus than in either of the preceding. Hindwing beneath with the dark 
subterminal clouds at the radials and hinclmargin stronger than above. The type $ came from Mt. Ellery, 
Victoria. Subsequent material from Mt. St. Bernard and Mt. Kosciusko shows the $$ (as also in the preceding 
species) to be considerably smaller than the G- 
B. Section: antenna of with 1 pair of pectinations to each joint (Xan¬ 
thorhoe). 
X. stinaria Guen. (= stinata Fereday) (24 k). Distinct in its colour and especially in the clear white stinaria. 
postmedian line of the forewing and its extremely bent antemedian, which becomes indistinct - often almost 
obsolete — - in its anterior part. South Island. New Zealand, at least from Christchurch to Invercargill; Hudson 
adds one or two North Island localities. Frequents rough herbage in the vicinity of forests. 
