5 
- blunder, in 1840 (op. cit. iv. p. 620) continued to use dugubris in a sense probably still more 
erroneous. 
The specimens figured are a male in full breeding-dress, on the same Plate with Motacilla 
alba, and an autumn-plumaged adult bird, also on the same Plate with JZ. alba in the same stage 
of plumage, both being British-killed examples, the same that are above described. 
In the preparation of the above article I have examined the following specimens :— 
E Mus. H. E. Dresser. 
a, 6 ad. Cookham, Berks, April 22nd, 1869 (J. Ford). 6,9. Cookham. c, 9. Cookham, January 21st 
(W. Briggs). d,3& ad., e, juv. West Drayton, July 20th, 1869 (Paraman). f, 3. Hampstead, April 20th 
(Davy). g. Hampstead, September 24th. h. Hampstead, October 13th, 1869. h, 7,7, k, l,m, n, o. 
Hampstead, October 1869 (Davy). p. Tangier (Colonel Irby). 
E Mus. Howard Saunders. 
a, 3,6,?. Orkneys, summer (Dunn). c. Hackford, Norfolk, February Ist. d, g ad. Seville Market, March 
4th, 1868 (H. S.). 
