296 
Mr. G. E. H. Barrett-Hamilton on 
validity of the various species and subspecies of Ptarmigan 
into which some naturalists have divided the birds found in 
the Aleutian and the Commander Islands,, and so it appears 
here as plain L. rupestris. 
Lagopus lagopus (Linn.). 
No. 57. ? , Karaga Village, August 21,1897; also obtained 
at Petropavlovsk, but not preserved. 
Surnia ulula (Linn.). 
No. 58. One unsexed, Petropavlovsk, autumn of 1897 
(Mr. Jacobleff ). 
This is another Kamchatkan species, no specimen of which 
had been seen by Dr. Stejneger, and which he suggested 
might be subspecifically distinct. My single specimen does 
not bear out this suggestion, and cannot be separated from 
ordinary examples. 
Alauda blakistoni Stejneger. 
No. 59. $ , Petropavlovsk, about August 28,1897. Colour 
of bill light horn, darker on the upper surface of the upper 
mandible; of interior of mouth light yellow ; of legs and 
feet fleshy, the soles light yellow; of claws horn. 
Nucifraga kamchatkensis Barrett-Hamilton (Bull. 
B O. C. vol. vii. 1898, p. xlvi). 
No. 60. One unsexed, Petropavlovsk, Kamchatka, about 
August 28, 1897. 
Dr. Stejneger never had the series of Nutcrackers necessary 
to show the distinctness of the Kamchatkau bird. I was 
therefore pleased to be able to compare my single specimen 
with those in the British Museum, when it at once became 
evident that it belonged to a form not represented in 
that collection. The Kamchatkan bird is darker than 
N. caryocatactes, and has the remiges tipped or margined 
with white. From N. multipunctata, which it resembles in 
the size of the large white spots, it differs in the lesser area 
of the white tips of the rectrices. 
A new species not only to the Kamchatkan, but to the 
