Publ. 1. XII. 1938. 
ANYDRELIA; HYDRELIA. By L. B. Prout. 
177 
66 a Genus: Aiiydrelia wow. 
Face broad, smooth. Palpus very short. Antenna of almost simple. Forewing very broad, termen 
strongly curved. Areole ample, the 5t-h subcostal and the stalk of the other 4 arising nearly at its apex, 1st 
radial from about midway between apex of cell and that of areole. Hindwing relatively small; in the $ with 
the venation of Discoloxia , in the <§ with abdominal margin broadly folded over beneath, the flap almost 
reaching the cell-fold, a large area in front of it distally (about to the 1st radial) with coarse specialized 
scaling. Genotype: plicataria Leech (Brabira) . Differs from Discoloxia not only in the $ hindwing, but in 
the subcostal venation of the forewing. All the known forms are dealt with here. 
A. dharmsalae Btlr. (16 f). This form is always $ and it is suspected, though there are some (per- dharmsalae. 
haps significant) differences, that the following may be its $. Dharmsala (type) and Kulu, the Kulu series 
collected‘‘on alder trees, October” (Hocking). — distorta Hmps., founded on a $ from the Nagas and erroneous- distorta. 
ly referred to Hydrelia, is very similar to plicataria (16 f) but lias the hindwing darkened, its underside with 
the androconia stronger apically; the straight central line of the forewing, if constant, is distinctive. Fore¬ 
wing rather paler than in dharmsalae $, especially beneath, 1st post-median line a little straighter, mark at 
3rd radial and 1st median rather stronger, 1st subterminal rather more distal, cell-clot rather less weak, lines 
of hindwing closely approximated; forewing beneath with 2nd postmedian shade well developed, curving 
away rather suddenly from the 1st postmedian from vein 5, angled just behind vein 4. 
A. plicataria Leech (16 f, <£; Vol. 4, pi. 7 g, §). On account of the differences just noticed, it was plicataria. 
inaccurate to sink this; the moreover, is slightly shorter-winged than in dharmsalae , sharper-marked, the 
postmedian beneath retaining its band-like character, whereas in dharmsalae it is scarcely more than a line. 
Several specimens of both sexes have been received from Kwanhsien and Omei-shan and show but little 
variation. 
67. Genus: Hytlrelisi Hbn. 
(See Vol. 16, p. 116.) 
It will be seen from the reference given above that Africa (chiefly the higher mountains) is to be added 
to the recorded distribution of this genus and that it there produces some special structural modifications. 
“H.” tchrinaria (Vol. 4, p. 268, pi. 13 d) belongs to the Geometrinae (neighbourhood of Dischidesial), as I 
ought to have realized from examination of Oberthur's figure; it will be dealt with in its right place in the 
present volume. 
A. Hindwing with 3rd radial and 1st median separate. 
H. testaceata Don. (Vol. 4, pi. 10 g). I have before me typical examples of this species from Ussuri testaceata. 
(Kardakoff coll.); see p. 160 above, on Solitanea defricata. — ab. deochrata Stmider (16 f), founded on a deochraia. 
somewhat prevalent Innsbruck aberration (not a subspecies), is more unicolorous than the typical form, 
the markings blurred or obsolescent, scarcely showing up as bands. As it is said to have recurred for 
several years it is evidently hereditary and is perhaps in process of establishing a local race. — ab. good- goodwini. 
wini Banfces (16 f). We figure a from the original locality in Kent. 
H. sachalinensis Matsumura , 4 d'G from S. Saghalien, is said to be closely related to testaceata but sachalinen- 
much smaller. Forewing pale greyish, with dark greyish bands; subbasal distinct, ante- and post-median wavy, su 
the former ochreous, at costa dark greyish, the latter excurved at vein 3, accompanied by a faint slender line 
proximally, these lines and a wavy subterminal band arising from fuscous costal spots. Hindwing with 3 
faint bands. Cell-dots small. Antenna simple, with fine cilia. 
H. latsaria Oberth. (Vol. 4, pi. 10 g). By an oversight, the type locality, Ta-tsien-lu, was omitted from latsaria. 
the German edition of Vol. 4 (p. 268). Sterneck, on 2 topotypical <$<$, lias supplemented my meagre descrip¬ 
tion. He calls attention to the bent termen of the hindwing and its very oblique discocellulars, the very large 
areole of the forewing and the absence of the cell-dot of the hindwing. Underside somewhat lighter than upper, 
the lines as distinct as above. — sublatsaria Wehrli subsp. nov. (14 d). I am indebted to Dr. Wehrli for the sublatsaria. 
following description, as well as for the paratvpes there mentioned. “Smaller, purer light-grey, not yellowish; 
antennal eiliation of the $ about V 2 diameter of shaft (in the original //. latsaria Oberth. much shorter, but- 
the head is much deformed and possibly a £ head has been stuck on to the certainly o' body); the costal 
spots of the forewing black, not brown, much sharper than in latsaria, the postmedian near the costa stronger 
and more sharply angled, its black spot in the middle sharply defined exteriorly, not reaching nearly so far 
distad; cell-dot of hindwing considerably more distinct, all the lines much more strongly curved; terminal 
dashes of forewing thicker. 4 4 $9 Ta-tsien-lu, the types in my collection. 2 cotypes in coll. Prout”. As 
both forms are from Ta-tsien-lu, I suspect that this will prove to be a separate species, although it is possible 
that the two belong to different altitudes or situations in this enormoulsy rich district. 
Supplementary Volume 4 
23 
