214 
HORISME. By L. B. Prottt. 
scorteata. 
pfeijferi. 
riedingeri. 
laurinata. 
insularis. 
carinthiaria. 
nigrofas- 
ciata. 
chinensis. 
exoletata. 
predotai. 
scotosiata. 
plurilineata. 
nigrovittata. 
exors. 
H. scorteata Stgr. (17 e). Locally common, Tangier, the Algiers district and at least as far eastward 
as Hammam Meskoutine. Variable, but as the forms are not at all sharply differentiated I refrain from giving 
them names; nearly unicolorous brown, nearly unicolorous fuscous, or a good deal variegated, sometimes (chiefly 
in the $) definitely pale in the proximal area and the anterior part of the median and distal areas (tapering to 
the apex), the posterior part more or less strongly darkened. Flies chiefly in March, April and May. Rebel 
reports a not quite fresh, from Gala Ratjada, Mallorca. 
H. corticata Tr. (Vol. 4, pi. 13 1) pfeifferi Wehrli (18 g). Less brown, more mixed with grey, the lines 
on both wings more developed, the black ones which bound the median area less outstanding, the pale area 
outside the postmedian, on the contrary, well developed and conspicuous. Underside darkened, likewise dist¬ 
inctly marked. Marasch, plentiful, May-June and again in August-September. 
H. tersata Schiff. (Vol. 4, pi. 13 1) ab. riedingeri G. Led. (18 h). We give a figure of the type. It is a bone- 
coloured aberration (about as shown in our figure of Scopula rivularia, Vol. 4, pi. 5 e), more or less weakly marked. 
A dozen were bred by Fr. Riedinger in inbreeding from a Bad Reichenhall Not rare at Digne, according 
to Heinrich. — laurinata Schawerda (17 e) somewhat recalls corticata in colour and markings, differing from 
typical tersata in its pure brown colour, less of the white lines and notably the obsolescence of the pale sub- 
terminal. Waidbruck, S. Tyrol, 4 examples; later recorded from S. France, the Pyrenees and Sicily. I figure 
a specimen of the Sicilian race, but am not sure whither it is exactly the same as the form originally intended 
by Schawerda. More likely it will have to be associated with the following, recently-described race. - insularis 
Byt.-Salz. Much larger than typical tersata and giving the impression of a separate species; as, however, the 
genitalia have shown no constant distinction in either sex, it is provisionally placed here. Colour bright brown, 
about as in laurinata , all the markings standing out clearly; the heavy apical streak broken, ending sometimes 
in the apex, sometimes behind it; subterminal clear and distinct. Particularly striking is a large dark mark 
which commences at the proximal end of the apical dash and occupies all the space between the subterminal 
and the discocellulars, ending posteriorly at the 2nd median vein. Sardinia, both sexes from Aritzo. — carin¬ 
thiaria Dannehl. Whitish grey, without (or almost without) the brownish tinge, the lines very fine and sharp 
(recalling calligraphata), the white subterminal strong, without the dark proximal shading. Carinthia. Probably 
near tetricata. — tetricata ab. nigrofasciata Djakonov. Differs in having the ante- and postmedian lines of the 
forewing deep velvety black, the former thickened on the veins, the latter sharply dentate; postmedian of hind¬ 
wing likewise strengthened. Djoia Lake, near Minussinsk, 1 with typical tetricata Guen. (Vol. 4. p. 301). 
chinensis Leech (17 d). We figure a $ from Omeishan. Sterneck records 7 and 2 from Pekin and notes 
that they are in general somewhat smaller than those of W. China and have the costal margin of the hindwing 
either wholly dark or only weakly lightened, while his Ta-tsien-lu and Sunpanting examples have it snow-white. 
Perhaps a separate race, yet European tersata, as well as Chinese, vary in this respect. 
H. exoletata H.-Sch. (Vol. 4. pi. 63 m, as exoletaria). This rare species has been further recorded by 
Tiirati from Sardinia; but this year Bytinski-Salz lias made known the following species and suggests — no 
doubt correctly — that the citation ivill be found to refer to this latter. 
H. predotai Byt.-Salz. Very near exoletata , representing it on Sardinia, but with different genitalia: 
valve broader, bent towards the costal margin; costa chitinized, the tooth at the base bent outward; sacculus 
longer, curved in S-shape; transtilla conical, oriented inward, not bent outward in the form of a hook. Larger 
in both sexes, ground-colour much darker, namely of a dark brown-grey on which the light anal spot stands 
out conspicuously; transverse markings variable, the lines may be very distinct or obsolete; outer boundary 
of median area formed of a series of distinct arcs, succeeded by a conspicuous slender line (in exoletata the course 
of this line is “approximately rectilinear”). Flies in October and November. 
H. scotosiata Guen. (17 e). We figure a from the Sajan Mountains, which agrees well with Altai speci¬ 
mens from the Elwes collection, as well as with the original description. I have pointed out, under falcata , 
the impossibility of merging these two species if I have then correctly determined. The “ scotosiata in the 
Leningrad Zoological Museum, on which Djakonov based his note, came from Urga and the River Irkut and 
were probably not identical with mine. 
H. plurilineata Moore (Vol. 4, pi. 7 f). Sterneck reports, somewhat doubtfully, a pair from Sunpanting 
and a $ from Wassekou, but I believe these refer to impigra, see below. The true plurilineata is probably not 
Palaearctic; I know it only from the N. E. Himalayas. 
H. nigrovittata Warr. ( - nigripunctata Warr.) (17 d). These names have hitherto been sunk to the 
preceding, but represent a distinct though closely allied species, with several differences in the £ genitalia. The 
(JcJ are variable in size, tone and distinctness of markings; the $ is less extremely long-winged than that of 
plurilineata. Punjab Kashmir, etc., the types from Tlmndiani. — f. exors nov. Slightly less narrow-winged 
