ZOOLOGY. 
CXCIX 
7. Calidris Arenaria. Sanderling. 
Temm. 524. 
Winter. Tringa Arenaria. Gmel. i. 680. Wil. Am. Orn. vii. 68. Sanderling. Arct. 
Zool. no. 403. Lhili. Syn. v. 197. Mont. Orn. Diet. Supp. 
Summer. Charadrius Rubidus. Gmel. i. 688. Lath. Ind. Orn. ii. 740. Wil. Am. Orn. 
vii. 129. — Ruddy Plover. Arct. Zool. no. 404. Lath. Syn. v. 195. Mont. Orn. Diet. ^ Supp. 
Young. Charadrius Calidris. Gmel. i. 689. Lath. Ind. ii. 741. — Sanderling. Lath. 
Syn. V. 197. 4" Supp. 253. 
Breed in considerable numbers on the North Georgian Islands: several 
pairs were killed at different periods of the breeding season, the males and 
females of which were invariably found to differ in their plumage ; the 
general colour of the female being lighter, and having more cinereous and 
less of black and reddish marking than that of the male : this is especially 
the case in the chin, throat, and fore part of the neck ; which may be 
described in the female as white, with a very slight sprinkling of dark spots, 
and scarcely any appearance of red ; whereas, in the males, the dark colours 
greatly predominate. The quill feathers of both sexes, and of all the speci- 
mens, were reddish-brown in those parts of the birds, which are usually 
described by some authors as being black. 
8. Charadrius Pluvialis. Golden Plover. 
Temm. 535. 
Winter. Gmel. i. p. 688. Lath. Ind. Orn. ii. 740. Syn. v. 193. Arct. Zool. no. 399- 
Wil. Am. Orn. vii. 71. Faun. Suec. no. 190. 
Summer. C. Apricarius. Gmel. i. 687. Lath. Ind. Orn. ii. 742. Fahr. no. 79. Wil. 
Am. Orn. vii. 41. Faun. Suec. no. 189. — Alwargrira Plover. Lath. Syn. v. 198. 4" Supp. i. 252. 
Arct. Zool. no. 398. ^ Stepp. 69. 
Breeds in the swampy parts of the North Georgian Islands in considerable 
abundance. In the young birds, killed in the latter part of August and in 
September, the colours of the head and upper plumage were scarcely less 
vivid than in their parents ; the neck and breast being an obscure but pale 
cinereous brown, on which the future spotting was just discefnible ; the 
