There is no doubt that the nests above described by Mr. Gilbert were those of Struthidea; those of Corcorax and Grallina are precisely similar; and it is somewhat singular that three birds differing so much in structure should build the same kind of mud nests.
Family CORVIDÆ, Leach.
Genus Corvus, Linn.
It is exceedingly interesting to trace the range of the members of this genus or the true Crows; not so much on account of their wide distribution, as from the circumstance of the form being non-existent in some countries which appear admirably adapted for their well-being; thus while the species are widely distributed over the whole of Europe, Asia, Africa, North America, the Indian Islands and Australia, none are to be found in South America, Polynesia or New Zealand.
| 269. Corvus Coronoides, Vig. & Horsf. | Vol. IV. Pl. 18. |
This is the only species that has yet been discovered in Australia.
Family ——?
Genus Neomorpha, Gould.
This form is strictly Polynesian, and the species confined to New Zealand.
| 270. Neomorpha Gouldii, G. R. Gray | Vol. IV. Pl. 19 |