43 
ed. The specimens having been examined by Yarrell, 
Newman, Doubleday, and Seebohm. 
Newton says “ Mr. Yarrell did not think fit to mention 
it in his last edition doubtless regarding it as a straggler 
from Australia.” 
Seebohm says the unknown eggs are probably like 
those of the known Switt’s, white. 
Brewer speaking of the eggs of Cypselus Acutus, 
(Bonaparte) the American Spiny-tailed Swift, says they 
are pure white, and small for the size of the bird. 
My clutch of this bird C. Acutus taken by Mr. S. H. 
Parker, at Lyttleton, North America, 8 June, 1879, are 
considerable smaller than the Swift’s (C. Apus.) but larger 
than the Martin’s. I have reason to believe that the eggs 
of the Spiny-tailed Swift (America) are passed off by 
some dealers for the Needle-tailed Swift’s (Australia.) This 
bird being on our list. 
THE ISABELLINE NIGHTJAR. 
(CAPRIMULGUS ALGYPTIUS.) 
Occurrence unknown to the B.O.U. List. (1883). 
Occurrence unknown to Newton. (1882). 
Admitted by Seebohm. 
The nature of its food precluding the possibility of it 
being an ‘escaped’ entitles it without hesitation toa place 
amongst the ‘Birds on the British List.’ 
Mr. Whitaker writing to the Zoologist (1883) says. 
“On the 23rd of Fune last my keeper shot a rabbit 
in Thieves Wood, near Mansfield ; and at the report of the 
gun a Nightjar flew out at the edge of the wood ; its ight 
colour attracting his attention, he fired his other barrel atit 
and broughtit down. Thinking it only a young bird he did 
