48 
AGROTIS. By Dr. A. Corti. 
albidior. 
olivacea. 
violascens. 
pseudo- 
chretieni. 
esctersa. 
pallida. 
angusti- 
pennis. 
amurensis. 
bifurca. 
stabilita. 
quadrigera. 
atridi- 
scala. 
chretieni. 
lafauryi. 
endogaea. 
cinerea. 
alpigena. 
obscura. 
obscura. 
pallida. 
virgata. 
albidior Pet. with whitish forewings; — ab. olivacea Htg. differing from albidior by the olive ground colour; — 
f . violascens Heydem. are specimens with violet-rose hue at inner margin and marginal ai’ea, especially intensively 
on costa of forewings, on buff ground colour. — f. pseudochretieni Heydem. are specimens without orbicular 
stigma; — ah. extersa Slats. (= ab. Hmps.) is uniform brownish grey, all stigmata being absent. — ab. pallida 
is the denomination given by Spitler to the south Russian, paler yellowish coloured specimens with whiter 
hindwings. The so-called — ab. angustipemiis Bart, differs from the usual vestigialis by the somewhat narrower 
wings, which can occasionally occur almost anywhere. — (ab.) amurensis Stgr. are predominantly dark, blackish 
specimens, often with dark costa and distinct dark transverse lines and stigmata; from the Apfel Mountains and 
Kentei. Nevertheless paler specimens also occur there. Early stages: ova not yet described. Larvae subter¬ 
ranean, ashy grey with delicate dorsal line and collateral lines, head and scutellum brown, can scarcely be 
differentiated from the larvae of ripae Him. Pupa brown with 2 cremaster spines. Flight July-November 
according to locality and climate, possibly in 2 generations. North, East and Central Europe excluding the 
polar regions, Spain, Italy, Corsica, Crimea, Sarepta (v. ?), Siberia, Altai (v. ?). 
A. bifurca Stgr. (Vol. 3, p. 25) (5 k). Size abt. 33 mm. Thorax and forewings grey, the latter with white 
outlined mediana, bifurcated outwards. Claviform stigma brownish, elongated, extends below the median 
nervure obliquely downwards in a broad brown streak. The other stigmata pale with dark surrounds. Transverse 
lines are absent. Sagittate marks are absent, rarely faintly indicated. Hindwings pure white with a barely 
visible darker marginal line. No discoidal spot. Underside impure white, bands are absent. All wings with 
distinct central spot. Saisan, September. Early stages unknown. 
A. stabilita Corti. Markings and colours exactly as bifurca Stgr. and for this reason I am not giving an 
illustration. Perhaps the species is synonymous with the preceding one, but the antennae have a slightly different 
structure of the upper pectinations, this may scarcely be deemed sufficient for the creation of a separate species. 
Fort Naryn, Turkestan. 
A. quadrigera sp. n. (6 a $ type). Is possibly only the hitherto undiscovered <$ of the subsequent species. 
Forewings pale grey-brown, markings very distinct. Costa whitish to reniform stigma and to below the oval, 
grey orbicular with its dark surround. In the basal area, below this white margin a dark oval mark with pale 
circumscription to which the wide dark velvety brown, almost completely quadrate claviform stigma is attached. 
Reniform stigma large, irregular, dark brown edged by pale anteriorly and dark posteriorly. Instead of sub- 
terminal line there are dark sagittate marks intersected by the whitish nervules to the margin of wings. Hind¬ 
wings white-grey, heavily dusted with brownish. Distinct discoidal spot. Underside grey-brown, hindwings 
considerably paler, discoidal spots on all wings. Urals in August. 
A. atridiscata Hmps. ( = Euxoa basigramma Hmps. nec Stgr.). Denominated from 2 §§. Compare 
previous species. Hindwings grey, admixed with red-brown with darker terminal line. Underside white, 
suffused with red-brown, hindwings with brown discoidal spot. 40 mm. Thibet, Gyantse. At an altitude of 
abt. 4000 m. June. 
A. chretieni Dum. (Vol. 3, p. 25, pi. 5 c). Orbicular stigma quite extinct, only rarely indicated by a 
small black dot. It does not appear to vary much, nevertheless I have a small $ with completely dark red- 
brown forewings to the outer transverse line and dusky hindwings. — lafauryi Dum. is smaller, 31 mm instead 
of 38 mm; paler, markings more indistinct. The “M” shaped mark below the reniform stigma as in chretieni, 
which occasionally is absent, is replaced in lafauryi by an open angular mark. Claviform stigma, which in 
normal specimens of chretieni is elongated and heavily brown, is replaced in lafauryi by a conical elongated 
stigma with pale centre and dark circumscription. This however also occurs in chretieni from Castile, chretieni 
occurs in Castile, Segovia, S. Ildefonso in altitudes of abt. 1300 m. It is also said to occur at Albarracin, Aragon, 
but this is doubtful, lafauryi occurs on the sea coast of south France, the lands around the Bay of Biscay. 
chretieni occurs in June—July, lafauryi in April. Early stages unknown. 
A. endogaea Bsd. (= arenicola Stgr.) (Vol. 3, p. 26, pi. 5 g). The illustration in main Volume is not good, 
the species is being illustrated afresh here (6 a <$). It appears to vary very little. Early stages: ova not yet 
described, larvae known but not described (Bellier), it is said to live in the sand and feed on grasses. Wet sea 
sand is not harmful to same, even for extended periods. Pupa also not described. It occurs in Corsica and 
Sardinia in 2 generations, May and October. 
A. cinerea Schiff. (Vol. 3, p. 27, pi. 5 g) (= murina Ev.). It varies considerably in markings and colour, 
alpigena G. Trti. (6 a $). Type from the Abruzzi. This paler form of cinerea is the predominant form in central 
Italy, southern France, the Pyrenees, Spain, occurring almost everywhere where cinerea occurs. The counter¬ 
part is — obscura Him. nec Tuft, also mentioned later on in literature by Teich as ab. livonica (Vol. 3, pi. 5 h) 
and which also occurs everywhere among cinerea. — obscura Tutt refers to a colour aberration of the english 
tephrina Stgr. (Vol. 3, p. 27, pi. 5 g), similarly its forms — pallida and — virgata. In spite of its great variability 
of colour and markings however tephrina is definitely a race, known hitherto only from England and the 
