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occurrences in Yorkshire, and Norfolk; the latter gentle- 
man considering the evidence unsatistactory. 
My clutch of five eggs of this bird taken by Mr. W. 
H. King, at Eagle Rock, Idaho, North America, May 24, 
1883, are very beautiful; they are round, and very glossy. 
Davie gives the size 1.38 by 1.19, pure white, and 
nearly round; a clutch being from five toseven. (Check 
list to North American birds.) 
It is the Mottled Owl of Brewer (N.A. Oology.) 
THE SIBERIAN GROUND THRUSH. 
(GEOCICHLA SIBIRICA.) 
Rejected from the B.O.U. List. 
Joticed by Newton, 
who says there is “an absence of all details in the cap- 
ture” of the single occurrence, 
Described by Seebohm, 
who says the evidence for the occurrence is not very 
satisfactory. 
This is surely tantamount to rejection by the three 
authorities. : 
THE BLACK-THROATED OUSEL, 
(MERULA ATRIGULARIS.) 
Admitted to the B.O.U. List on one occurrence. 
Admitted by Newton on one occurrence. 
Admitted by Seebohm on one occurrence. 
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