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Show 1893.] SPECIES OE LEPIDOPTERA HETEROCERA. 293 the base greyish white. The head, antennae, palpi, thorax, and abdomen black; tegulae yellow ; a line on each side and one on the underside of the abdomen white ; legs above black, greyish white on the underside. Expanse If inch. Hab. British Guiana, Eoraima Mountain (Whitely, Mus. B.). A pretty species, allied to B. cymct, Hiibn., and B. trailii, Butl. DIOPTIS PALLENE, sp. n. (Plate XX. fig. 3.) Male. Primaries black, hyaline near the base; a wide semihyaline whitish band crosses the wing beyond the middle from the costal almost to the outer margin, and an oval whitish spot close to the anal angle. Secondaries hyaline; the veins, costal and outer margins black ; a submarginal orange-yellow narrow line extends from the apex to the anal angle. Underside very similar to the upperside, but with the base of costal margin of the secondaries greyish white. Head, underside of the thorax, and abdomen white; antennae, upperside of the thorax, and abdomen black ; legs greyish white ; tegulae yellow7. Expanse 1| inch. Hab. Ecuador, Sarayacu (Buckley, Mus. B.). DIOPTIS CHELEDONIS, sp. n. (Plate XX. fig. 5.) Male. Primaries hyaline; the apex, outer margin, and a narrow band crossing the wdng from the costal margin to the anal angle black; a wide white band crosses the wing near the apex from the costal margin nearly to the outer margin, but does not reach it; a square white spot close to the anal angle ; a spot at the apex and the inner margin orange-yellow. Secondaries hyaline; the veins, costal and outer margins black; a submarginal line extending from the apex to the anal angle orange-yellow. Underside very simdar to the upperside, but generally paler in colour. Head, antennae, palpi, thorax, and abdomen above black. Underside of abdomen and legs greyish brown ; tegulae yellow. Expanse 2 inches. Hab. Ecuador, - Intaj (Buckley, Mus. B.). A beautiful species, quite unlike any other known to me. DIOPTIS EGLA, sp. n. (Plate XX. fig. 4.) Male. Primaries hyaline ; the costal and inner margins, apex, and veins dark blackish brown, crossed beyond the middle by a broad band of orange-yellow; a brown band at the end of the cell, a small spot close to the costal margin, and an oval spot near the anal angle whitish hyaline. Secondaries hyaline ; the veins and outer margin blackish brown ; a submarginal line extending from the apex to the anal angle orange-yellow. The underside very similar to the upperside, but slightly paler in colour. Head, antennae, palpi, thorax, legs, and the upperside of the abdomen black; underside of the abdomen greyish white. Female almost |