HORISME. By L. B. Prout. 
'J9 
a little mixed with white; markings russet to cinnamon-brown; basal patch 1.5 mm, mixed with green; median 
band 3 mm wide at costa, 1.5 mm at hindmargin, proximal edge slightly curved and crennlate, distal slightly 
indented near costa, more incurved at 2nd radial, extremely oblique inward froin behind 3rd radial to 2nd 
median near its base; distal cloudings indefinite, except the anterior subterminal ones. Hinrlwing rather narrow, 
subconcave near anal angle (as in the following species), abdominal margin in posterior half clothed with dense, 
coarse, buff-tinted hair; ground-colour rather light drab. Underside somewhat drab, beyond the middle whiter, 
distally darkened, though less strongly than in subterlimbata. Kikuyu Country: Wambogo, 17(J0 m, only the 
type known. 
P. subconcava sp. n. (11 a). Evidently near subtrunca, which I cannot now com])are. Antenna with subconraru 
the ciliation longer, apparently almost twice diameter of shaft, arranged in slender, compact fascicles, 2 pairs 
to each joint, arising from small processes (rudimentary pectinations). Forewing with band still more narrowed 
posteriorly, at hindmargin bounded with white. Hindwing whitish, with a tinge of buff, the hair at concavity 
and abdominal margin less manifest; cell-dot fairly sharp, though minute, postmedian line faint. Underside 
with no trace of dark borders. W. Kivu: Kisiba, Bugoie Forest, 8500 feet, November 1921, the type di • Ru¬ 
anda dist., Kabira Forest, N. of Lake Tanganyika, 7000 feet, January 1924; both collected by the late T. A. 
Barns. 
P. hargreavesi sp.7i. (11a). Face scarcely tufted. Palpus 1%. Antennal joints slightly projecting, kanjrca- 
ciliation somewhat over 1. Head fuscous. Thorax with some green above (Abdomen lost). Forewung with 
areole double, the distal one ample; coloration and general effect of a dark ‘jwasmaria or subrnfaria-, distinctive 
nre the elongate cell-mark and the shape of the median area, with its strongly narrowed posterior half and 
especially the deep encroachment of the green ground-colour proximally in the cell; white distal edging of the 
postmedian rather distinct. Hindwing with 2nd discocellular somewhat curved, 2nd radial central, arising 
very little behind cell-fold; appears long and distally narrow, the termen being concave behind 1st median, 
the posterior part of the wing somewhat folded and contorted, at end of abdominal margin developed into 
a sort of flap, beneath densely clothed with coarse specialized scaling, a number of very broad scales showing 
a metallic shimmer. Both wings beneath weakly marked. Uganda: Fort Portal, September 1933 (H. Har¬ 
greaves) the unique type a ^ in the British Museum, presented by its discoverer. 
21. Genus: Xloriisme Hhn. 
Near Eupithecia, most of the generally employed taxonomic characters identical in the two genera: 
palpus moderate, antenna simple, hindleg in both sexes normal, abdomen with small crests, Avings without 
special modifications, discocellulars of hindwing not biangulate. The species are generally larger, in shape 
perhaps nearer to Piercia than to Eupithecia, the hindwing often crenulate, generally concolorous with the 
forcAAong and equally strongly marked. As a rule the thorax shoAVS a better developed (double) ])osterior crest 
than Eupithecia-, areole of foreAAung double, as in relatively feAV Eupithecia. The genitalia likeAvise have much 
in common Avith that genus — formation of labides, coremata on 9th segment, etc. —• but there is no “body- 
plate”. The larvae, at least as regards the Palaearctic species, have not the flower-feeding habit AAdiich is so 
usual in Eupithecia. Widely distributed in the Old World and A^ery sparingly represented in North America. 
The half-dozen or so of African species belong almost entirely to the east or south. 
H. ustiplaga Warr. (10 k). A small species, rather anomalous in the strongly lamellate antenna, ustiplaga. 
and metallic thoracic crest. Palpus less strong than in most of the species, Avings little elongate. Varialjle, but 
not like any other; the blend of colours and the heavy black scaling about the end of the cell of the foreAving 
are sufficiently characteristic. Natal (loc. typ.), the Transvaal and Cape Colony. 
H. pallidimacula Prcud (10 k) is likewise rather small, but is nearer to obscurata in shape and colouring. palUdima- 
Readily known by its stronger crests, the pale mid-subterminal spots or dots and the sharply marked under- 
side, AA'hich someAvhat approaches that of yiatalata Walk., though less strongly darkened distally. TransAmal 
and extending to Nyasaland and Uganda. 
H. filia Prout (11 a). As small as ustiplaga, which may possibly be its nearest relative. I have nnfor- fdia. 
tunately no note regarding the antennal structure. HindAving Avith margin more crenulate, coloration less 
varied, cell-dot of foreAving indistinct, postmedian line of hindAving more regular. Natal. 
H. obscurata Prout (10 k). A rather common species, AAdth somewhat the facies of the tersata gronj) obscurata. 
of the Palaearctic Region. The variation is in large measure sexual, the dd usually having the median area 
little darker than the rest, Avhile in the $$ it is commonly more or less strongly bandlike. Described from the 
Transvaal but extending to Kivu and Kenya and to Cape Toavu. 
H. punctiscripta Prout (11a). Described as an Ortholitha but more probably a rather long-AA'inged ■punctiscrip- 
Horisme, though the crests, in the sole specimen before me, are not A^ery manifest. OtherAAUse pretty similar 
