EUTRICHA QUERCIFOLIA. 205 



Ground colour dull ferruginous. 



i. Dull ferruginous, without (or with ill-developed) transverse lines zz: ah. 

 suffusa-obsoleta, n. ab. 



2. Dull ferruginous, shaded with grey, especially at base and along costa of 

 forewings (suggesting a greenish tinge*), more purplish on outer area of all 

 wings, often with pale (yellowish or orange) marginal line and cilia ; transverse 

 lines well developed=ab. suffusa, n. ab. 



Ground colour deep purple-blue or ptrple-black. 



1. Deep purple, scaled heavily with black, especially over costal and basal 

 areas of forewings ; transverse lines ill-developed ; marginal line usually pale (yellow- 

 ish) ; thorax and abdomen also very darkzrab. purpurascens-obsoleta, n. ab. 



2. Deep purple, scaled heavily with black, but with well-developed transverse 

 lineszrab. purpurascens, n. ab. 



The only described forms of this species appears to be as follows : 

 a. xar.salici folia, Staud., "Iris," v., p. 352 (1892); "Cat., "3rd ed., p. 123 (1901). 

 — A pair found at the end of July on the river in the Kentei are so different from all 

 my quercifolia that I briefly describe them as var. salicifolia. The S measures 51mm., 

 the ? 60mm. ; the specimens are therefore much smaller than typical quercifolia. 

 They are much lighter grey-brown, almost of the colour of populi folia ; especiallv 

 is the outer marginal part of the forewings behind the dark dentated line (which in 

 the ? stands out very* strongly) light, towards the middle of the outer margin almost 

 becoming violet-grey. The blackish transverse line (band) in this outer part, often well- 

 developed in typical quercifolia. is only so rudimentarily indicated that it is as good 

 as wanting. The fringes of the fore-wings are in the basal pari with the limbal- 

 line almost yellow, exteriorly blackish, on the hindwings they are entirely yellowish. 

 The hindwings have, especially in the ? , a thick black transverse line behind which 

 in the ? stands also a faint second line. On the underside their basal half, as lar as 

 the dark trausverse line dirty light-grey, almost without a brown tinge, especiallv 

 in the ? , in the light grey-brown outer part, the dark band-like markings are practi- 

 cally wanting (Staudinger). 



Staudinger further notes that he has intermediates between the 

 type and the new variety from Saisan, south-western Siberia, as 

 they are smaller and lighter than the type ; the form from the Amur, 

 on the contrary, quite agrees with the large European type. In his 

 Catalog, 3rd ed., p. 123, he diagnoses the variety as " Minor, dilutior, 

 griseo-brunnea vel ochracea. Dahuria, Mongolia ( trans.)." 



j3. ab. ulmifolia, Heuack., " Stett. Ent. Zeit.," xxxiv., p. 244 (1873) I Auriv., 

 "Iris," vii., p. 170 (1894); Staud., "Cat.," 3rd ed., p. 123 (1901). Alnifolia, 

 Kirby, "Cat.," p. 823, in part (1892). — Multo pallidior, flavescens. ? var. 

 ulmifolia, Dahl, in lit. Besides the ab. alnifolia, O. (obscurior), this species forms 

 an antithetical, extraordinarily light yellowish white-grey aberration, which I have 

 seen in several collections without taking note thereof. At present only one 

 example lies before me, which Herr Blauel of Osterode bred from a larva fed on 

 Salix. I believe I see in this form the var. ulmifolia, Dahl, mentioned in Heyden- 

 reich's Catalogue, 1851 (Heuacker). 



Staudinger unites (Cat., 3rd ed., p. 123) this aberration with 

 dalmatina, Gerh., and gives as localities : " Sicily, Castile, Dalmatia, 

 Issyk Kul, Amdo, southern Tyrol, etc. fab. J ; Saisan, eastern Siberia, 

 etc. (trans.)." 



y. var. meridionalis (Staud., in litt.), Horm., "Verh. z.-b. Ges. Wien," xlvii., 

 p. 331 (1897). — All the specimens from Suceava and its vicinity belong to a particular 

 race, which, according to Staudinger, is identical with his unpublished var. ?neri- 

 dionalis, which is indigenous to the Mediterranean region and to Asia Minor. The 

 examples in question ( s and ? ) are light ochre-yellow, quite as in populifolia, with 

 a peculiar clear rose-red silky gloss. As Suceava is situated in a steppe district, the 

 occurrence of a Mediterranean race is readily explained (Hormuzaki). 



Staudinger notes seven specimens from Saisan, of medium size, 



* Due to a rough black scaling on the orange or reddish ground colour, the 

 black scaling being carried to its extreme in ab. purpurascens. Here, however, the 

 purple-black is predominant, with scarcely any tendency to a greenish hue. 



