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Show 1875.] ORNITHOLOGY OF MADAGASCAR. 73 them, however, narrowly margined with fulvous ; upper tail-coverts white, banded with brown, the subterminal bars broader and shaded with greyish ; tail silvery grey, whitish at tip and crossed with seven blackish bands, the subterminal ones the broadest, these bands diminishing in number on the outer feathers, where only five can be counted, the bases of the outer feathers white on the inner web; upper wing-coverts black, a few of the feathers terminally margined with whity brown or white ; edge of wing white, and the outermost of the least coverts broadly margined with silvery grey, mesially streaked with black along the shaft; median and greater series alternately barred with black and silvery grey; primary coverts similarly banded ; quills black above and below, the secondaries terminally margined with white and broadly banded across with silvery grey; lores dusky blackish ; eyebrow and sides of face buffy white, very narrowly lined with black ; sides of neck fulvescent, streaked with black like the nape ; under surface of body pure white, the fore neck slightly washed with fulvous, and, like the breast, distinctly streaked with blackish brown, these central streaks disappearing towards the abdomen and under tail-coverts, where they become mere shaft-lines; the flanks streaked with pale rufous; leg-feathers pure white, the upper part of the thigh with a few nearly obsolete rufous shaft-lines; under wing-coverts pure white, mesially streaked with black like the breast, the outermost of the lower series with a few greyish black bars; inner lining of quills black, the bases of inner webs white, mottled with blackish vermiculations, the secondaries for the most part white below, banded across with greyish black; "iris yellow." Total length 22 inches, culmen 1*45, wing 16*9, tail 11, tarsus 3*55. Subfamily AQUILIN^E. EUTRIORCHIS, gen. nov. Belongs to the group of bare-legged Eagles, and is closely allied to Spilornis and to Dryotriorchis, more particularly to the last, as might have been expected. It differs principally in having a full aud rounded crest, all the plumes being rounded and not lanceolate; and it is unlike any of the other Harrier-Eagles in the extreme shortness of the wing, while the tail is inordinately long and equals the wing in dimensions. Just as Urotriorchis macrurus is the longest-tailed form of Goshawk yet known, so Eutriorchis is the longest-tailed Harrier-Eagle yet discovered. From Sqnlornis, which it resembles in the fulness and form of its crest, it differs in the length of tail and iu its feathered lores. The type is EUTRIORCHIS ASTUR, sp.n. (Plate XIII.) General colour above dark brown, most of the feathers of the head and back with narrow terminal margins of white to the feathers, some of the coronal plumes margined with dull rufous; crest very full and uniform with the back, the lateral plumes narrowly barred with white ; most of the dorsal feathers exhibit bars of darker brown ou being examined, these bars being more distinct on the upper wing-coverts, which are otherwise brown like the back; quills |
