74 MOTACILLID&. 
and neither of them exhibits any large blotch. They measure 
respectively: °78 by °6; °85 by ‘58. 
2. Sta. Elena, Antioquia, U.S. Salvin-Godman Coll. 
Colombia (7. A. Salmon). 
Basileuterus leucopygius, Scl. & Salv. 
Basileuterus leucopygius, Salv. § Godm. Biol. Centr.-Amer., Aves, i. p. 172 
(1881); Sharpe, Cat. Birds B. M. x. p. 402 (1885) ; id., Hand-l. v. 
p- 127 (1906). 
Two eggs of the White-rumped Wood-singer are of a regular oval 
form and slightly glossy. They are white, speckled and spotted, 
chiefly round the larger end, with reddish-brown and violet-grey. 
They measure respectively -8 by °56 and °83 by ‘58. 
2. Carrillo, Costa Rica, 7th May. Mr. C. F. Underwood [C.]. 
Family MOTACILLID. 
Genus MOTACILLA, Linn. 
Motacilla lugubris, Zemm. 
Motacilla yarrellii, Thien. Fortpflanz. ges. Vog. tab. xxv. fig. 2, a-e 
(1845-54) ; Hewitson, Eggs of Brit. Birds, i. p. 163, pl. xli. figs. i 
& ii (1856) ; Seebohm, Brit. Birds, ii. p. 194, pl. 14 (1884) ; ad., 
Eggs of Brit. Birds, p. 259, pl. 58. figs. 17 & 18 (1896). 
Motacilla lugubris, Dresser, Birds Eur. iii. p. 239 (1875); Sharpe, Cat. 
Birds B. M. x. p. 460 (1885); Dresser, Man. Pal. Birds, pt. i. 
p- 197 (1902) ; Sharpe, Hand-l. v. p. 137 (1906). 
Motacilla alba lugubris, Hartert, Vog. Pal. Faun. pt. iii. p. 3801 (1905). 
The eggs of the Pied Wagtail are mostly of a broad oval form, 
and they are moderately glossy. They are white, greyish-white, or 
very pale bluish-white, densely speckled or mottled with greyish- 
brown and underlying lavender-grey. Some specimens are some- 
what darker than others, but, as a rule, the eggs of this Wagtail are 
very uniform. A few examples exhibit one or two short black 
hair-lines at the broad end. The eggs measure from *73 to °87 in 
length, and from ‘57 to °63 in breadth. 
5. Lochend, Inverness, May (Hargitt Seebohm Coll. 
Coll.). 
5. England. Old Coll. 
5. Stanwix, Carlisle, Cumberland, W. Radcliffe Saunders, Esq. 
June. eae 
6. Stanwix, Carlisle, 6th June. W. Radcliffe Saunders, Esq. 
D 
4. Stanwix, Carlisle, 26th June. W. Radcliffe Saunders, [sq. 
[P.]. 
