"<i>Eurystomus Australis</i>, Swains., Australian Roller. Dollar Bird of the Colonists. During flight the white spot in the centre of each wing, then widely expanded, shows very distinctly, and hence the name of Dollar Bird.'"
1851. I. Henderson, `Excursions in New South Wales,' vol. ii. p. 183:
"The Dollar-bird derives its name from a round white spot the size of a dollar, on its wing. It is very handsome, and flies in rather a peculiar manner. It is the only bird which I have observed to perform regular migrations; and it is strange that in such a climate any one should do so. But it appears that the dollar-bird does not relish even an Australian winter. It is the harbinger of spring and genial weather."
<hw>Dollar-fish</hw> <i>n</i>. a name often given formerly to the <i>John Dory</i> (q.v.), from the mark on its side. See quotation, 1880. The name <i>Dollar-fish</i> is given on the American coasts to a different fish.
1880. Guenther, `Study of Fishes,' p. 451:
"The fishermen of Roman Catholic countries hold this fish in special respect, as they recognize in a black round spot on its side the mark left by the thumb of St. Peter, when he took the piece of money from its mouth."
1882. Rev. J. E. Tenison-Woods, `Fish of New South Wales,' p. 62:
"The dory has been long known, and when the currency of the colony was in Mexican coin it was called a `dollar-fish.'"
<hw>Dorca-Kangaroo</hw>, <i>n</i>. See <i>Dorcopsis</i> and <i>Kangaroo</i>.
<hw>Dorcopsis</hw>, <i>n</i>. the scientific name of a genus of little Kangaroos with pretty gazelle-like faces. (Grk. <i>dorkas</i>, a gazelle, and <i>'opsis</i>, appearance.) They are called <i>Dorca-Kangaroos</i>, and are confined to New Guinea, and form in some respects a connecting link between <i>Macropus</i> and the <i>Tree-Kangaroo</i> (q.v.). There are three species—the Brown Dorca Kangaroo, <i>Dorcopsis muelleri</i>; Grey D., <i>D. luctuosa</i>, Macleay's D., <i>D. macleayi</i>. See <i>Kangaroo</i> (e).