CHESIAS. By L. B. Prout. 
85 
L. (?) chaoticaria Alph. (14 i) is still unknown to me (see Vol. 4, p. 175), but the discovery of buxtoni chaoiicaria. 
has strengthened my suspicion that it may be a Liihostege with well ciliated $ antenna. We reproduce the 
figure of the type. 
19. Genus: Chesias Tr. 
I have brought forward this genus because of its obviously close connection with (section?) Lithostege 
(see above), which rendered the interposition of Anaitis and Carsia somewhat inappropriate. 
Ch. sureyata Rbl. (= leuconeura Prout) (8g) is another link between Chesias and Liihostege, having sureyata. 
the shape slightly less extreme than in the typical group of Chesias, but with the foreleg and the general 
scheme of markings more Chesias- like. The irregularly whitened veins give it a characteristic aspect; the 
white subterminal is curved posteriorly, about as in legatella (Vol. 4, pi. 6 b). The types of both names came 
from Angora, Rebel's obtaining priority through a preprint, which I had not seen when I redescribed as 
leuconeura. 
Ch. legatella Schijf. ab. nigrogriseata Heydem. The distinct rust-brown markings of the typical fore- nigrogri- 
wing (costal, distal and around the two spots of the median area) almost entirely absorbed in the blackish seata. 
grey of the ground-colour. Treated as an ab. loc. in Schleswig-Holstein, frequent in the rare in the $, but 
the few which I have seen are from scattered localities. — capriata Prout (8 h) is also the race in S. Dalmatia, capriata. 
according to Schw t ingenschuss and Wagner. I suspect, however, that it and the Sicilian legatella are really 
intermediate races. Meier-Ramel and Wehrli note albinistic $$ in S. France. 
Ch. rhegmatica sp. n. Size of legatella (Vol. 4, pi. 6 b). (length of forewing about 17 mm), wings slightly rhegmatica. 
broader, intermediate towards the shape of isabella (8 h). Forewing less pale than in capriata (8 h), the general blend 
of colour much as in average $ legatella; the white or light-brown anterior streak almost obsolete, only its apical 
part vaguely indicated in light-brown; subbasal line fine, acutely angled; postmedian line from costa to 2nd med¬ 
ian blackish, as in rufata, irregularly thickened, with much deeper curves than in that species and more oblique 
outward to costa and with a very deep subcostal indentation; partial white proximal edging to this line, as 
in several allied forms; the slender, indistinct hinder end of the postmedian even more oblique inward than 
in legatella, bounding a similar (but indefinite and more longitudinal) submedian patch; subterminal slender, 
its proximal (grey) band bounded proximally by a sinuous whitish line. Cyprus: Limassol, 13 January (G. H. 
Mavromoustakis), the type $ in the British Museum; a rather smaller but precisely similar $ in the Tring 
Museum from the same locality. 
Ch. isabella Schawerda (= isabellae B.-Haas) (8 h), erroneously erected as a form of legatella, on 2 Isabella. 
from Vernet, E. Pyrenees, and also thus recorded by me (2 $>$, Canales and Casayo, Spain), though I after¬ 
wards — equally erroneously — regarded them as extreme blurred forms of rufata cinereata (8 i), is now recog¬ 
nized as a distinct species, occurring at Albarracin together with both legatella. and rufata and in some respects 
intermediate between the two. The only other recorded French locality is, I think, Saurat (Ariege, near Foix). 
An aberration (?) from Cintra, Portugal (in the Tring Museum, taken in April) is still somewhat more like 
rufata. In Spain, so far as my information goes, it occurs in the first half of July (several localities) and 
again in October (Albarracin). The rounded costa, blurred markings, but with distinct black mark at base 
of 3rd radial standing out as sharply as in spaitiata , and the buff streak from apex are characteristic. 
Ch. angeri Schawerda (8 i) founded on 3 examples from different localities in Upper Italy, is close to angeri. 
rufata but with the postmedian line straightish (parallel with termen), the subterminal curved, the tone dif¬ 
ferent. I can indicate no other significant distinctions, but it scarcely seems possible that it can be a mere ab¬ 
erration. Province of Udine. 
Ch. rufata F. omata Heydem. (14 i). Forewing with the postmedian very broad, sharply black, often omata. 
continuing equally distinct right to the hindmargin; the distal area, from the postmedian outward, darker, 
blackish-grey, but with the subterminal and an intermediate line (this latter often broken into dots) sharply 
white; the rust-brown markings often reduced (exceptionally, there occur examples with much brown). The 
apical region is especially darkened, slate-grey, offsetting sharply the clear grey-white costal angle. Charact¬ 
eristic of N. Holstein, Schleswig and the N. Frisian Islands; specimens from the latter mostly small (length 
of a forewing 12,3—13 mm). — ab. pseudanaitis Heydem. (14 i), occurring with the preceding on Annum, has the pseudanaitis. 
forewing light-grey with all the red-brown shading wanting (or, in one example, with scarcely perceptible traces 
thereof), the lines, on the other hand, very sharply marked in black. “Perhaps showing a convergence to 
linogrisearia” (8 h). The strongly developed markings give some superficial impression of a small Anaitis 
praeformata or Carsia paludata. — ab. nigrescens Heydem. founded on 2 $$, one from Molln, the other from nigrescens. 
northern Eckernforde, has the forewing suffused with black-grey; even the brown, where it is retained at all. 
is darker. — obliquaria Schiff. (Vol. 4, pi. 6 b, as rufata), from Central Europe (the type from Vienna), though obliquaria. 
usually cited as synonymous with the name-typical rufata of England, is really lighter, intermediate towards 
