342 



HETEROGENEA; SUSICA; ALTHA. By Dr. A. Seitz. 



angulaia. C. angulata Fixs. In facies similar to a large $ of limacodes, but the forewing Math very sharply 



marked hind angle, and the border-lines of the median band only distinct in the posterior half. On account 

 of the wing-contour, a thoracical hump and crested abdomen the species has beeen placed in a special genus, 

 called Rhaynnosa in the text by Fix.sen, and Ratnesa on the plate, there being no definition and the name being 

 marked Avith ? As the species is unknown to me in nature, the form is placed here, being doubtless closely related 

 to Cochlidion. 



6. Genus: Heterog-eiiea Knock. 



Very small and inconspicuous moths, which are restricted to the northern hemisphere, being represented 

 in the Palearctic Region by three species and in North America by one. Usually slenderer and more delic- 

 ate than the species of Cochlidion; the antennae simple also in the cj, not serrate. The forewmg frequently 

 more acute, distally broader, with the distal margin much longer, the fringes long, the cell shorter. — The larvae 

 smaller, less convex, more variegated, but otherwise similar to those of the preceding genus. The moths have 

 but one brood. The ^J^J fly early in the summer by day in the sunshine; their flight, however, is not wild 

 and whirriiig, but slower and more straight on account of the slenderer body and broader wings, the moth 

 resembling on the wing a Tortrix. The}' do not occur anywhere so abundantly as the species of the previous 

 genus, being m many districts even very rare. 



asella. H. asella Schiff. (= cruciata Knock., asellana Hbn.) (50 a). The smallest known Limacodid. Forewing 



almost uniformly dark brown, the hindwing still somewhat darker, blackish, or both wings uniformly dark 



nigra, brown (= ab. nigra Tutt); the fringes of both wings yellowish. — Larva dark green, with red-brown dorsum 

 marked with a yellow herringbone pattern; in the autumn on deciduous trees. The moth in June and July 

 usually not common, and also easily missed on account of its similarity to a Tortricid. I obtained the species 

 nearly always only when collecting Micros. 



uncula. H. uncula Stgr. (49 k). Considerably larger, of a white ground-colour; the forewing with a split up 



middle band, the hindwing shaded with grey, whitish basally. From the Amur, Northern China and Japan 



fulgens. (Hondo and Hokkaido). — fulgens Leeck (50 a) apjaears to be only a light-coloured form of this species, in 

 which the middle band is reduced to sparse vestiges. Recorded from Gensan in Corea, and Ningpo ; in June 

 and July. — -Kokb obtained iincula several times at the lamp, and found the species by day at rest on Phello- 

 dendron and Juglans mandschurica. 



dentaius. H. Aentatus Obeti/i. (iQ k). Very different from the preceding species and in spite of the simple antenna 



of the cJ nearer to Cochlidion than to the other Heterogenea. Forewing less broad than in uncula and much less 

 pointed than in asella; more variegated, markings bright, with whitish curved stripes before the apex and hind 

 angle and dark oblique shadows before and in the centre. — ■ From June until the end of July, at distri- 

 buted from Vladivostok and Askold towards the South, on the peninsula of Sidemi. Not abundant. 



7. Genus : Kii!>>iea Walk. 



Relatively rather large moths, with thick thorax, very broad forewing and long fringes to the hind- 

 wing. Head broad; palpi porrect, segment 1 short, 2 long, 3 very small. Antenna pectinated in ^J to beyond 

 two-thirds. Forewing oval, with rounded apex; of the 5 subcostals 1 branches off close beyond middle of 

 cell, 2 before apex of cell, 3 — 5 on a common stalk from upper angle. — ■ The few species which belong here 

 are restricted to India, with the exception of one, which is also distributed in China. 



■pallida. S. pallida Walk. (= Tadema sinensis Walk.) (49k). Dull yellowish earth-brown, coarsely scaled, mi- 



nutely dotted, with the outer margin of the forewing rather strongly ventricose; from before the apex a thhi 

 line angulate near cell-end runs towards hind angle, which it does not reach ; from the same point an oblique 

 shadowy line extends to the hind margin, which it reaches at one-third; basally to this line the wing is darker, 

 ^ particularly in the (J. — ■ Not rare in Japan, China and India, distributed from Yamato and Yokohama (Leech) 



over Formosa, the greater part of China to Moulmein. The caterpillar on Pear (Pryee). 



8. Genus: Altha Walk. 



The rather small .species which belong here are Indian, only one extendmg farther north and reaching 

 Palearctic territory in Kashmir, where however it does not appear to be common. All the species are very 

 conspicuously coloured, being white or bearing a velvety patch which occupies nearly the whole forewing. These 

 small moths have a broad head, the c?-antenna bipectinated to two-thirds, the thorax broad and woolly, 

 and the abdomen stout. The forewing triangular, with the costal margin somewhat incurved and the apex 

 rectangidar; the discocellular obtusely angulate; the subcostal branch 2 and the stalk of 3 — 5 together 

 from upper angle of cell; the recurrent cell- vein which emanates from the cross-veiias about reaches to middle 

 of cell. 



