67 
form and structure of their nest, but not in the colouring of their 
eggs, which are always blue in colour. 
334. Zosterops dorsalis, Vig. § Horsf . . . . Vol. IY. PL 81. 
335. Zosterops chloronotus, Gould Yol. IV. PI. 82. 
336. Zosterops luteus, Gould Vol. IV. PI. 83. 
Family CUCUL1DAE. 
The family Cuculidce is very fairly represented in Australia, since 
we there find species belonging to the greater number of the Old 
World genera, and one, Scythrops, which has not hitherto, I believe, 
been found elsewhere ; each of which, with the exception of Cen- 
tropus and Eudynamys, like their prototypes, are parasitic in their 
nidification, and depend upon other birds for the hatching of their 
eggs and the feeding of their offspring. 
Genus Cuculus. 
337. Cuculus optatus, Gould Vol. IV. PL 84. 
Since my description of this species was printed I have seen 
specimens from India, with the name of Cuculus 7nicropterus at- 
tached to them ; should this name have been published prior to 
the one I have assigned to it, my name must sink into a synonym. 
338. Cuculus inornatus, Vig. Horsf. . . . Vol. IV. PI. 85. 
Columba pallida, Lath. 
339. Cuculus cineraceus, Vig. Horsf. . . . Vol. IV. PI. 86. 
340. Cuculus insperatus, Gould Yol. IV. PI. 87. 
341. Cuculus dumetorum, Gould. 
This species, which inhabits the north-western coast, differs from 
C. insperatus in being of a much smaller size and in the whole of 
the plumage being browner. 
Genus Chrysococcyx. 
The members of this genus are distributed over most parts of the 
Old World ; two species occur in Australia. 
342. Chrysococcyx osculans. 
Chalcites osculans, Gould Vol. IV. PL 88. 
343. Chrysococcyx lucidus Vol. IV. PL 89. 
Sylvia versicolor , Lath. 
Genus Scythrops. 
The only known species of this remarkable form inhabits the 
eastern parts of Australia, and according to the information gained 
from the notes made by Mr. Gilbert during Dr. Leichardt’s Expedi- 
tion, extends its range northward from thence to within the tropics. 
f 2 
