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STAMNODES: POLYTHRENA. By L. B. Prout. 



testaria. A. testaria F. {== duponchellaria Luc.) (6 a). Forewing almost miiforiii testaceous brown, hindwing 



uniform fulvous. The sexes differ somewhat in size and shape, but I know of no other material variation in 

 the species. It is apparently by no means rare in Algeria. 



12. Genus: Ntaiuiiocles Guen. 



Face smooth or nearly smooth, roimded, sometimes a little prominent. Palpes short or quite moderate, 

 shortly scaled, cf antenna simple, flattened. Leg-structure normal. Forewing usually rather narrow, distal 

 margin smooth; areole double. Hindwing rather elongate, distal margin smooth, rounded, inner- marginal area 

 somewhat narrowed, with the submedian (vein 1 b) close to the margin, which is usually slightly folded, but 

 not developing a distinct pocket; discocellulars biangulate. 



A not very extensive genus, inhabiting Palearctic Asia and America. Although presenting few salient 

 characters it is generally easy to recognize by its facies. which is different from tliat of most Larentiids. The 

 wings are of rather delicate texture, usually of a yellow colour and with more or less complete dark distal 

 bordering which widens at the apex of the forewing. The other markings consist of dark spots or blotches, 

 especially at the costal margin of the forewing. 



pauperaria. S. pauperaria Ev. (= passerinaria H.-Sch.) (6 a), the type of the genus, is of a light fulvous ochreous, 



paler towards the margins, especially the costal margin of the forewing. The markings are formed of massed 

 fuscous atoms, which do not entirely obliterate the yellow of the ground-colour; the marginal band is complete, 

 though very narrow, the apical patch moderately extended; costal margin with 3 further (rather vague) blotches, 

 the first 2 only reaching the subcostal vein, the 3'''' narrowly and indefinitely extended as far as the 3'''' radial 

 or P* median. Underside of forewing similar to upper, the fuscous dusting more extended in the basal area; 

 hindwing beneath whitish, densely spotted and strigulated with fuscous throughout, with the exception of a 

 divitiaria. curved central fascia. Widely distributed in Central Asia. — divitiaria Stgr. is a form with the anteapical 

 patch (half-band) on the forewing and the entire under surface of the hindwing deeper fuscous. It is the 

 principal, though not the only form in the Ala Tau and is also recorded from the Karategin district, Buchara. 



pamphilata. S. pamphilata Feld., from Koksar, Kulu, Dharmsala, etc., represents pauperaria in the N. W. Himalayas 



and might possibly be regarded as a form of it. The fuscous markings are darker, not or scarcely sprinkled 

 with a dusting of the ground-colour, the third costal blotch of the forewing is much better defined and of 

 more uniform width, only narrowing quite slightly posteriorly, and the base of the forewing to nearly one-half 

 and of the hindwing to beyond one-half is suffused with fuscous. The under surface shows similar distinctions. 



danilovi. S. danilovi Ersch. ( = davidaria Oh) (6 a, b) is a very distinct species, with rather broader wings, 



of a brighter colour, the fuscous markings broken up into series of sharply-defined spots, the hindwing 

 (especially beneath) copiously dark-spotted, the abdomen also dark-spotted. Distributed in Southern Siberia 

 and Northern China. 



depeculata. S. depeculata Led. I do not know the name-type of this species, which occurs only in Transcaucasia. 



It is described as having the forewing dark grey with a narrow white band at about three-fourth, strongly 

 excurved in the middle, and with two other bands more or less indicated, one from the costa at one-fourth, 

 the other at one-half, sometimes joining in the middle of the wing (becoming obsolete in the figured specimen); 

 fringe chequered. Hindwing white, finely dusted with grey, especially towards the distal margin; beneath very 

 coarsely scaled with dark grey and dirty white ground (the figure shows a narrow white median band). — 



narxanica. narzanica Alph. (= tibetaria Oh.) (6 b) differs in having the ground-colour white, the dark parts of the forewing 

 being restricted to some weak basal shading, two costal marks in the proximal half, an incomplete fascia 

 running from the costa beyond the middle and a marginal band which widens at the apex, occasionally in 

 part confluent with the submarginal ; hindwing also white excepting a narrow distal border, which is sometimes 

 reduced to a mere marginal line. Said to occur as an aberration in Transcaucasia, but also inhabits the 

 Northern Caucasus, the Koko-Nor district and W. China. 



13. Genus: Polytlirena Gutn. 



Face smooth, slightly rounded. Palpus rather short, somewhat rough-sealed. Antenna in cf nearly 

 simple, minutely ciliated. Leg-structure normal. Wings rather narrow with the apices rounded and the 

 distal margin smooth. Forewing with areole simple; cT with a pencil of long black hairs beneath, arising 

 near the base of the posterior margin. Hindwing with the costal vein anastomosing with the cell, but more 

 shortly than in most of the Larentiids:- discocellulars biangulate. 



A very natural genus, consisting of three closely allied speies which inhabit Siberia and Western China. 



