marina. 
inornaia. 
sticiochila. 
mundaria 
ussuriaria. 
planatci. 
obliterata. 
draudti. 
14 HEMITHEA; DIPLODESMA; CHLORISSA. By L. B. Prout. 
22. Genus: Hemithea Dup. 
(see Vol. 4, p. 23; Vol. 12, p. 114.) 
It is doubtful whether any Palaearctic species except aestivaria Hbn., marina Btlr. and sticiochila sp). n. 
really belong to this genus, sens. str. Neither the abdominal crests not the details of wing-shape give satis¬ 
factory groupings and the best alternatives would be either to merge Chlorissa in Hemithea or to separate 
them by the formation of the 8th sternite of the abdomen. In Chlorissa the posterior edge of this sternite 
is produced centrally into a lobe or prong of varying length. By this criterion nigropunctata, distindaria and 
confusaria (Vol. 4, p. 23) would be Chlorissa, a change which is supported by their brighter green colouring, 
generally finer scaling and manifest affinity with amphitritaria and pretiosaria. For ussuriaria, see Diplodesma. 
H. marina Btlr. (3 a remains scarce and no fresh specimens are yet available. We figure a faded 
but otherwise fairly good $ from Satsuma (S. W. Kiushiu). In the Aigner collection I determined as ma¬ 
rina (see Nov. Zool., Vol. 30, p. 293) the deeper green insect with similar markings which I at one time sup¬ 
posed to be ussuriaria, but which I have now found it necessary to describe as a new Chlorissa. But a more 
careful study shows that the true marina is a Hemithea closely allied to, if not indeed a race of, the H. costi- 
punctata Moore of the Indo-Australian Region (Vol. 12, p. 115). To the differentiation from aestivaria it 
may be added that the face is green, not red, the hindwing a little less narrowed, the terminal line wanting; 
the red anterior tergites of the abdomen bear white central spots. Yokohama (type), Yoshino, Nagasaki, etc. 
H. (?) inornata Matsumura. Pale olive green, without any markings; costa of forewing at base narrowly 
infuscated; fringes whitish, not chequered. Vertex white, face brown. 1 £ from Ichinosawa, S. Saghalien, in 
June. I have not seen it. 
H. stictocliila sp. n. (2 h). Intermediate between aestivaria Hbn. (Vol. 4, pi. 2 d) and insularia profecta 
(Vol. 12, p. 114, pi. 13 k). Antenna not quite so markedly dentate as in aestivaria, but with the ciliation a 
little shorter than in profecta. Face and palpus slightly less dark and more reddish than in the latter, but not 
of the bright red of aestivaria. Wing-margins scarcely sinuous, shaped about as in profecta, but the hindwing 
slightly less narrow. Lines fine and weak, in part punctiform on the veins, not strengthened at hindmargin 
of forewing; terminal line interrupted by larger white spots than in profecta, spots on fringe weaker; underside 
of hindwing without dark apical blotch. Tse-kou (R. P. Duberxard), type in Mus. Brit. 
23. Genus: Digilodesma Wan. 
(see Vol. 4, p. 23 and Vol. 12, p. 117.) 
The abdominal crests are generally, but not invariably wanting. The distinctive characters are found 
in the subcostal venation of the forewing: 1st subcostal always well stalked, anastomosing with, or generally 
running into the costal, 2nd subcostal sometimes normal, sometimes running info the costal, sometimes stalked 
beyond the 5th, sometimes wanting. On the Indo-Australian species see Vol. 12, p. 117. 
D. mundaria Leech (Vol. 4, pi. 2 e) is well distributed in W. China, or in any case not confined to Ta- 
tsien-lu; furthermore I have been unable to separate from it forms from the Khasis and Formosa. It is perhaps 
a race of the following; in both, the 1st subcostal generally runs into the costal, though I have seen two or 
three $$ in which it merely anastomoses. 
D. ussuriaria Brem. (= eluta Wileman) (Vol. 4, pi. 2 d). I believe that this is the correct synonymy 
and that the Hemithea described under the name ussuriaria on p. 23 (though not the specimen figured) was 
Chlorissa tyro, described below as a new species. This confusion is all the more regrettable because it has misled 
Dr. Sterneck in his valuable working-out of the Stotzner Hemitheinae; his “ Hemithea marina” , with dark 
terminal line, is evidently tritonaria Walk., his ‘ H. ussuriata ” probably the said new species. The present 
species belongs chiefly to Japan, E. Siberia and Corea, but reaches Central China; I have not seen it from 
W. China. Better crested than mundaria , the postmedian line more sinuous. 
D. planata Prout (Vol. 12, pi. 13 1). Very closely like large mundaria , possibly a form of the same but 
with more specialised venation: 2nd subcostal in the C running into costal. Forewing very straight-margined, 
hindwing much elongated. Punjab, scarcely truly Palaearctic; see Vol. 12, p. 117. 
24. Genus: tillorissa Steph. 
(see Vol. 4, p. 24; Vol. 8, p. 61; Vol. 12, p. 116; Vol. 16. p. 27.) 
On the suggested extension of this genus, see under Hemithea. 
Ch. obliterata Walk. (Vol. 4, pi. 2 e). To the range are to be added Saghalien, Shantung and W. China. 
Ch. draudti Andres & Seitz (2 h). Nearest to pulmentaria (Vol. 4, pi. 2e) in markings, but with the li¬ 
nes more dentate, the proximal on the hindwing less regular; at once distinguishable (even in the living, fresh 
