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Show 1894.] FROM TROPICAL AMERICA. 229 15. MACH^ERAPTENUS YENTRALIS, sp. nov. Head black. Collar creamy yellow edged with black. Thorax black; patagia creamy yellow tipped with black. Abdomen dorsally black, shaded with blue on the posterior half ; underneath, coxae and abdomen orange. Primaries yellowish white; the costal margin black; the base narrowly black ; the inner angle finely black. Secondaries whitish. Exp. 42 millim. Hab. Aroa, Venezuela. 16. ID ALUS ENERVIS, sp. nov. Palpi white, pink at the base. Head white, with a transverse pink streak. Collar white, laterally shaded with pink. Abdomen crimson dorsally, white underneath. Legs white, coxae crimson. Primaries above bright yellow; the costal and inner margins finely white, tbe costa otherwise pinkish ; a purplish shade contiguous to the white on the inner margin ; a small purplish spot in the cell, and a large spot of the same colour at the end of the cell and extending beyond it; an outer transverse row of small purplish spots. Secondaries above white, with a few rosy hairs at the base. Underneath, the primaries are bright yellow, with the cellular spots crimson instead of purplish; secondaries white. Exp. 31 millim. Hab. Castro, Parana. 17. EUCERON AROA, Sp. UOV. Head brown, two orange spots behind the antennae. Collar brown. Thorax brown ; a yellow streak on patagia. Abdomen greyish brown; anus orange; underneath banded with white. Primaries whitish grey; all the veins and apex dark grey ; a subapical transverse white shade. Secondaries light greyish hyaline, the margins dark grey. Underneath, the primaries are of a uniform grey, with only the subapical white shade. Exp. § 31 millim. Hab. Aroa, Venezuela. Obs. Closely allied to E. costulatum, H.-S. 18. EUCEREON DENTATUM, Sp. nOV. Head grey, posteriorly crimson. Collar and thorax grey, streaked with black. Abdomen with the first segment grey; otherwise crimson dorsally, white below, black laterally; anus tipped with black. Primaries light grey ; a basal and an inner dentate transverse darker line ; beyond the latter a dark spot in the cell; a median dentate line followed by a large dark blotch at the end of the cell, which reaches from the costa to vein 2 ; an outer dentate line crossing a dark spot between 2 and 3, and followed by a similar line which does not reach the inner margin; a terminal'row of dark spots, the largest one being just above the inner angle. Secondaries grey, the disk faintly hyaline. Underneath, the wings are dull grey. Exp. 31 millim. Hab. Coatepec, Mexico. PROC ZOOL. Soc-1894, No. XVI. 16 |