<hw>Orange-spotted Lizard</hw> (of New Zealand), <i>Naultinus elegans</i>, Gray.

<hw>Orange-Thorn</hw>, <i>n</i>. See <i>Orange, Native</i>(2).

<hw>Orange-Tree</hw>, <i>n</i>. The <i>New Zealand Orange-Tree</i> is a name given to the <i>Tarata</i> (q.v.), from the aromatic odour of its leaves when crushed.

<hw>Organ-Bird</hw>, or <hw>Organ-Magpie</hw>, <i>n</i>. other names for one of the <i>Magpies</i> (q.v.).

1848. J. Gould, `Birds of Australia,' vol. ii. pl. 48:

"<i>Gymnorrhina organicum</i>, Gould, Tasmanian crow-shrike; Organ-Bird and White-Magpie of the Colonists. Resembling the sounds of a hand-organ out of tune."

1848. T. L. Mitchell, `Tropical Australia,' p. 176:

"The burita, or <i>Gymnorrhina</i>, the organ-magpie, was here represented by a much smaller bird."

<hw>Ornithorhynchus</hw>, <i>n</i>. i.q. <i>Platypus</i> (q.v.).

<hw>Orthonyx</hw>, <i>n</i>. a scientific name of a remarkable Australian genus of passerine birds, the spine-tails. It long remained of uncertain position . . . and finally it was made the type of a family, <i>Orthonycidae</i>. In the type species, <i>O</i>. spinacauda . . . the shafts of the tail-feathers are prolonged beyond the legs. (`Century.') Thename is from the Greek <i>'orthos</i>, straight, and <i>'onux</i>, a claw. See <i>Log-Runner</i> and <i>Pheasant's Mother</i>.