200 Mr. II. Druce on some EXPLANATION OF PLATE IIL Fiff. 1 . Ennea microthauma. Fig. 2. juxtidens. Fi(j. 3. Zinyis Haygarthi. Fig. 4. inmic.ta. Fig. 5. ampliata. Figs. 6, 6 a, 6 b. Trachycystis calorama. Figs. 7, 7 a, 7 h. pycnotricha. Figs. 8, 8 a. ectima. Fig. 9. Trochomorpha placenta. Fig. 10. Balea africana. Figs. 11, 11 a. riqm cryptoplax. Fig. 12. Curvella sitmosa. Fig. 13. Auricula catonis. Fig. 14. dtirbanicu. Fig. 15. Cyclophorus minimus, M. & P. Operculum. Figs. 16, 16 a, 16 b. Trachycyatis charybdis, Benson. XVII. — Descriptions of some new Species of Heterocera. By Herbert Druce, F.L.S. &c. Fam. Lithosiidae. Chioncema sumatrensis, sp. n. Male. — The head, collar, and tegulse white, the collar and tegulee edged with yellow ; the thorax and basal half of the abdomen white, the anal half of the abdomen yellow ; an-tennas, palpi, and legs yellow. Primaries white, crossed from the costal to the iimer margin by three waved yellow lines ; two small black dots at the end of the cell and a short yellow streak in the cell ; the outer margin bordered from the apex to the anal angle with yellow ; the fringe white : secondaries white, shaded with yellow at the apex and partly round the outer margin. — Female very similar to the male, but with the markings all red instead of yellow ; the secondaries salmon-colour, with the fringes white. Expanse, ^ 1^, $ 1| inch. Hah. Sumatra, Pedang {Boch, Mus. Druce). Lithosia subcosteola, sp. n. Male. — The head, antennje, and legs black ; collar, tegulse, and thorax yellow ; abdomen greyish black, the sides and anus yellow. Primaries greyish black, yellow at the base and streaked along the costal margin from the base to the apex with yellow : secondaries pale yellow. Expanse lj% inch. IJah. Central China, Hunan (Pratt, Mus. Druce).
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