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Salvin, O., inheritance of mutilated feathers; on the Humming-birds; on the numerical proportion of the sexes in Humming-birds; on Chamaepetes and Penelope; on Selasphorus platycercus; Pipra deliciosa; on Chasmorhynchus. Samoa Islands, beardlessness of the natives of. Sandhoppers, claspers of male. Sand-skipper.
Pintail, drake, plumage of; pairing with a wild duck. Pintail Duck, pairing with a widgeon. Pipe-fish, filamentous; marsupial receptacles of the male. Pipits, moulting of the. Pipra, modified secondary wing-feathers of male. Pipra deliciosa. Pirates stridulus, stridulation of. Pitcairn island, half-breeds on. Pithecia leucocephala, sexual differences of colour in.
Sclater, P.L., on modified secondary wing-feathers in the males of Pipra; on elongated feathers in nightjars; on the species of Chasmorhynchus; on the plumage of Pelecanus onocrotalus; on the plantain-eaters; on the sexes and young of Tadorna variegata; on the colours of Lemur macaco; on the stripes in asses. Scolecida, absence of secondary sexual characters in.
Lastly, in several species of a sub-genus of Pipra or Manakin, the males, as described by Mr. Sclater, have their SECONDARY wing-feathers modified in a still more remarkable manner. Even the bones of the wing, which support these singular feathers in the male, are said by Mr. Fraser to be much thickened.
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