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Show 1878.] MR. D. G. ELLIOT ON THE GENUS PTILOPUS. 519 have but one species, Pt. jambu ; while Java, the last locality in which Ptilopus is found, contains two, Pt. melanocephalus and Pt. porphyreus. The following key will show the chief differences existing between the birds of this genus. I recognize 71 species, and have divided them into two great groups, characterized by having the breast-feathers bifurcate or not bifurcate. KEY TO THE SPECIES. A. Breast-feathers bifurcate. a. Front and top of head purple or deep rose, margined with yellow or pale green. a'. Tail with a subterminal grey or ash-coloured band. a". Abdomen deep rose-colour; under tail-coverts yellow, tipped with rose; breast bright green 1. Pt. greyi, p. 523. bn. Abdomen and breast washed with olive; purplish red spot on the breast 2. Pt. neglectus, p. 524. c". Abdomen and flanks green, with an indistinct spot of darker green in the middle of the former; breast ash-colour, tinged with green; back, wings, and tail green, with strong coppery red reflexions; inner secondaries with a small dark green spot on tip 3. Pt. bonapartei, p. 524. d". Abdomen pale green, with a purplish black spot in the centre; breast uniform ashy, tinged with green; scapulars with a conspicuous dark violet spot at tip 4. Pt. purpuratus, p. 525. b1. Tail with a terminal yellow band. a". No spot at base of mandible. 1. Centre of abdomen rufous 5. Pt. apicalis, p. 527. 2. Secondaries and tail copper-colour; small dark purple spot on lower part of abdomen. a. Front and crown purple 6. Pt. coralensis, p. 528. fj. Front and crown greyish purple or amethyst 7. Pt. chalcurus, p. 529. 3. Middle of abdomen rufous, upper edge dark purple, scapulars tipped with lilac 8. Pt. pictiventris, p. 530. 4. Feathers on upper part of breast with transverse violet spots near the tips; no spot on lower part of breast; abdomen orange; crissum yellow; under tail-coverts white at base, then yellow, with rose-violet tips 9. Pt. pelewensis, p. 531. 5. Throat white or pale yellow; breast pale green, feathers tipped with light grey ; abdomen orange, with a lilac-red spot in the centre 10. Pt. regina, p. 531. 6. Throat light yellow; breast pale green, feathers tijjped with light grey; abdomen orange, with a pale lilac band upon the upper part ... 11. Pt. ewingii, p. 533. |