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Show 1880.] LEPIDOPTERA FROM FORMOSA. 689 Under surface greyish brown, with cupreous reflections; wings with whitish fringe, traversed by a grey line and with a yellowish basal line. Expanse of wings 9 lines. Three examples. 144. NEPHOPTERYX HYEMALIS, sp. n. Primaries shining slaty black : secondaries pearly white, transparent ; costal border and marginal line brownish ; fringe traversed by a grey line : thorax slaty black ; abdomen brown. Primaries, costal border of secondaries, and body below sericeous grey. Expanse of wings 11 lines. One slightly broken example. It is most nearly allied to N. semi-nivella. 145. PEMPELIA ZINCKENELLA. Phycis zinckenella, Treitschke, Schmett. Eur. ix. 1, 201 (1832). Assara albicostalis, Walker, Cat. Lep. Het. xxvii. p. 80 (1863). Modiana scitivittalis, Walker, I.e. p. 83 (1863). Alata anticalis, Walker, /. c. p. 108 (1863). Crambus sabulinus, Butler, Ann. & Mag. Nat. Hist. ser. 5, vol. iv. p. 455 (1879). One specimen. This European species seems to come from all parts of the world : the specimen upon which Walker founded his genus Assara is from Borneo, that on which he founded his genus Modiana from Australia, those upon which he founded his genus Alata from St. Jago and Sierra Leone; and the example which (misled by its long palpi) I described as a Crambus was from Japan. It now comes from South Formosa; and we have an example in the Museum collection from Espirito Santo in Brazil. CERATAMMA, gen. nov. Allied to Pempelia, but the basal joint of the antennae thicker; the second joint large, and covered on both upper and under surfaces by a flattened tuft of hair-like scales ; frons terminating in a conical process projecting downwards; palpi about as long as in P. zinckenella, but projecting obliquely downwards ; neuration as in Pempelia. Type C. hobsoni. 146. CERATAMMA HOBSONI, sp. n. Primaries above greyish brown ; basal fourth dark brown, limited externally by an orange oblique stripe, margined internally with black and externally with pearly whitish : secondaries pearly white, costal border, outer margin, and a line on the fringe grey : body sericeous greyish brown. Under surface sericeous greyish brown, the secondaries becoming white towards the abdominal margin. Expanse of wings 8| lines. Four examples, all more or less rubbed, but showing the markings. |