by Mr. Claude Grant in South Africa. 431 
3G9. Hirundo albigularis. 
Tv. Wakkerstroom, Mch. 2 and 4 (2) ; Petersburg, 
Feb. 23(1). 
[This species is also migratory, arriving and departing 
about the same time as the European Swallow. Besides the 
localities at which specimens were secured, I have noted it 
in Zululand (Sept. 1904), and on the Zambesi at Tete(Sept. 
1907), while a single pair were seen near Beira in Oct. 1906, 
where they intended to nest on the supports of a railway 
water-tank, but were disturbed by natives and left the locality. 
The flight is swift and somewhat straighter than that of 
other Swallows, and is usually close over the surface of the 
ground. 
The soft parts are :■—Prides hazel; bill, legs and toes 
black.] 
371. Hirundo atroc^erulea. 
2b. Sibudeni, Oct. 26, Nov. 14, 25 (4) ; Jususie Yallev, 
Dec. 2 (1) ; Tv. Woodbush Hills, Nov. 3, 8 (4). 
This is one of the rarest of Swallows in collections, and 
the present series is not only a valuable addition to the 
British Museum, but considerably extends the known range 
of the bird. 
There were formerly four examples only of this bird in 
the British Museum, all from Natal, so that the known range 
is now extended north to Zululand and the North-Eastern 
Transvaal. 
Four of the “Grant” examples are marked as females, and 
differ noticeably from the others, which are all marked males, 
in their much duller and less metallic coloration, especially on 
the lower surface, as well as in the absence of elongation of 
the outer tail-feathers. These average 145 mm. in the males, 
while in the females they average 70. I therefore suspect 
that the sexes differ, contrary to the general rule in the family. 
It is, of course, possible that the birds marked female may all 
be juvenile, but it does not seem very likely. 
Of the four examples already in the British Museum 
Collection, only one, Wanlberg's cotype, is sexed. This is 
