HORISME. By L. B. Prout. 301 



H. aquata Hhn. (131). Easily distinguished from the foOowing by its smaller size, smoother scaling, aquala. 

 paler coloration, straighter (not denticulate) lines of the median area, etc. — Larva variable, green, brownish or 

 violaceous, dorsal line fine, blackish, white-edged, broken into spots on the middle segments, lateral stripe 

 yellowish or flesh-coloured, black-edged above. On Clematis. The pupa hibernates. Imago in April — May and 

 again in July. Distributed in Central Europe; has been reported from N. England (Cumberland), but this is 

 doubtful. 



H. vitalbata Scluff. (131). Very easily recognized by the strongly contrasted colouring and oblique viialbata. 

 arrangement of the dark fuscous or blackisch central shade. Geographically variable. The name-typical form 

 is distributed in Central and S. Europe, Asia Minor, etc. — conspicuata Hirschke is on an average larger, and conspicuala. 

 is less brownish (more ashy or whitish). Local in the Styrian Alps. — variegata St^r. is very similar to the varkgaia, 

 preceding, the band very dark and broad on a pale ground-colour. Distributed in Central and Eastern Asia; 

 also Dalmatia. — detersata Piing. is of normal size but has the ground-colour darker wood-brown, the dark detersaia. 

 band therefore not sharply contrasted. Hi district. Transitions occur in the Issyk-kul district and Ferghana. 

 — Larva cylindrical, head somewhat flattened; grey-brown, the dark dorsal line broken on the 5 or 6 abdominal 

 segments into an anterior black spot and posterior line which thickens in the middle; the other lines slender. 

 On Clematis vitalba in two generations. Pupa rather stout, with fine sculpturing; blackish brown, lighter at 

 the segment-incisions. Hibernates in an earthen cocoon. The moth flies in May — June and again in August. 



H. falcata B.-Haas. Both wings more elongate, apex more acute, colour paler, markings ill-defined, falcata 

 postmedian not appreciably projecting at 3'''' radial, terminal line not broken into dots. Sajan district. 



H. scorteata Stgr. is said to be somewhat similar to vitalbata (131), the forewing fuscous with base scorteata. 

 and costal margin broadly leather-colour. My sole example is nearly unicolorous, the hindwing somewhat 

 more crenulate than in vitalbata; possibly a different species. S. Andalusia and Algeria. 



H. corticata Tr. (= alutacearia Bsd.) (131). Somewhat intermediate between the preceding and following corticata. 

 groups. Forewing with costal region not pale, median area not darkened, but with sharp boundary-lines except 

 anteriorly. Hindwing concolorous. Larva very similar to that of tersata, brownish grey, lighter posteriorly, 

 the dark dorsal line broken into short thick streaks on the middle segments. On Clematis in two generations. 

 Pupa dark brown, darker than that of tersata, the cremaster broader; hibernates. Imago in May and August, 

 Italy, Austro-Hungary to Asia Minor, N. Syria and Transcaucasia. 



H, parcata Piing. Near tersata (131) but smaller, forewing much less acute, hindwing even more parcata. 

 strongly waved than in corticata. Greyer than tersata, nearer to the colour of scotosiata, which is larger aiid 

 with more elongate forewing, etc. Markings not strong; discal dots obsolete. Koko-Nor. A browner, more 

 pointedwinged form or ally from Kuldja. 



H. tersata Schiff. {= radicaria Lah.) (IB I). Lines numerous but none very sharp, antemedian blackened tersata. 

 at inner matgin, postmedian with proximal teeth on the veins. Hindwing usuafly almost white costally, except 

 in the distal area. The name-typical, form, which is distributed from Europe (except the north) to Trans- 

 caucasia, has a yellow-brown hue. — gen. aest. tersulata Stgr. (= ? singulariata Vill) is smaller, more tersulata. 

 unicolorous, less sharply marked. — testaceata Hbn. is a greyer race, often sharply marked, known to me testaceata. 

 from Zermatt and Hochschwab. — tetricata Guen. is more ash grey, without yellow tinge, the lines more tetricata. 

 numerous but ill-defined. Guenee's types, from the Altai, showed other differences but the name is now applied 

 comprehensively to the forms which eastward to Japan. — chinensis Leech is smaller and more reddish, cUnensis. 

 transverse lines weak, subterminal partly obliterated, some dark clouding on forewing proximally to the post- 

 median and proximally to the subterminal. Hindwing with the postmedian line straighter. Described from 

 Chang Yang. I have a similar but rather darker example from Miyanoshita, Japan, end of August, presented 

 by Dr. Cockayne. Possibly a separate species. — Larva cylindrical, with somewhat flattened head;' ochreous 

 brownish, the dark dorsal line broken up into spots or blotches on the first 5 or 6 abdominal segments. On 

 Clematis vitalba. Pupa stout, deep red-brown, the wings with a greenish tinge. Hibernates in an earthen 

 cocoon. Moth in May — June, with a partial second brood later. 



H. intricata Stgr. This and the 3 following are unknown to me. Grey-black, forewing basally and intricaia. 

 distally somewhat brownish, without distinct lines, antemedian indicated at the margins, postmedian black, 

 rather strongly dentate, subterminal obsolescent except as a triangular whitish spot near anal angle. Underside 

 lighter than upper, but far darker than in tersata. Zaisan, 1 cf, possibly a dark aberration of tersata though 

 the postmedian line seems different. 



