190 DR. P. L, SCLATER ON THE SPECIES OF TADORNA. [May 10, 
size of the male and in the fleshy protuberance at the base of the 
bill, which, at the approach of the breeding-season, increases in size 
in the same sex. 
The Common Sheldrake has not of late years bred in the Society’s 
Gardens, although burrows have been constructed for its use, with 
the hope of inducing it to do so. 
2. TADORNA RADJAH. 
Anas radjah, Less. Voy. Coq. Zool. p. 602. 
Tadorna radjah, Eyt. Mon, Anat. pl. p. 106; Gould, B. Austr. 
vii. pl. 8. 
Hab. Northern and Eastern Australia (Gould); Batchian, East 
Gilolo, Bouru, Ceram, and Salawatty (Wallace). 
“Seen in Aru Islands”? (Wallace). 
** Breeds in trees, in hollow branches and boles”’ (Gould). 
We have not yet succeeded in getting living examples of this very 
beautiful species. 
B. Casarca. 
3. TADORNA RUTILA. 
Anas casarca, Linn. 
Tadorna rutila, Boie, Isis, 1822, p. 563. 
Casarca rutila, Bp. Geogr. List, p. 56; Salvin, Ibis, 1859, p. 362. 
Hab. South-eastern Europe; Africa, north of Atlas (Tristram) ; 
India, common (Blyth) ; China (Swinhoe). 
I am not aware that the Ruddy Sheldrake ever bred in this So- 
ciety’s Gardens until 1859, when a pair, received from Egypt as long 
ago as May 1850, bred in one of the boxes in what are called the 
“Garganeys’ Ponds” near the Refreshment-rooms. Four young 
birds, the produce of this pair, were hatched on the 13th of May of 
that year. In the following year (1860) four young birds were 
hatched on May 18th. In 1861 the male bird died ; but the old fe- 
male paired with one of her offspring, and two young birds were 
hatched on June 2nd. In 1862 three birds were hatched on June Ist. 
In 1863 four were hatched on May 15th. At the present moment the 
female of this same pair is sitting. 
Regarding this bird’s breeding in a free state, Mr. Salvin’s in- 
teresting notes in the first volume of ‘The Ibis’ (p. 362) may be 
referred to. 
4, TADORNA CANA. 
Le Canard a téte grise, Brown, Ill. Zool. pls. 41, 42. 
Anas cana, Gm. 8. N.i. p. 510. 
Casarca cana, Blyth, Cat. Mus. A. S. B. p. 302; Sclater, Cat. 
Vert. p. 83; P. Z.S. 1859, p. 442. 
Hab. South Africa; Cape Colony. 
Of this Sheldrake, which is the ‘‘ Berg-Ente”’ of the Boers of the 
Cape colonists, I believe only one example has ever been alive in the 
Society’s Gardens. This was the female purchased at the sale of 
the late Lord Derby’s collection in 1851, having been imported about 
