OF [ Vol. xl. 
Fohkien in South-east China, are—with one exception— 
small birds, I have come to the conclusion that there are 
two distinct races of the Red-bellied Rock-Thrush in the Far 
Hast. 
The small race occurs in the Philippine Islands, in South- 
east China, Formosa, Pescadores Islands, and other parts of 
South-east Asia during winter, and breeds in North-east 
Chihli, and no doubt in North China generally, from 
Shantung northwards. Swinhoe found it breeding in 
Formosa, so that it is probably a resident there. Whether it 
is likewise resident in South-east China does not appear to 
have been proved. 
The large race probably winters in South-east Asia and 
travels to the mouth of the Yangtse, whence it presumably 
crosses over to Japan. Iam informed by Dr. Hartert that 
the large bird is also found in Hastern Siberia. A specimen 
in my collection from the Bonin Islands belongs to this 
large race. 
I propose to distinguish the large representative of Petro- 
phila solitaria manilla as 
Petrophila solitaria magna, subsp. nov. 
Conspicuously larger than Petrophila s. manilla Bodd. 
from the Philippine Islands. 
Wing, ¢, 4°80 to 5:05 in. (average of 8 specimens 4°95). 
Wing, ?, 4°62 to 4°85 in. (average of 4 specimens 4°79). 
The second primary is between the fifth and sixth. 
In Petrophila s. manilla the wing measures, ¢ 4°50 to 
4-76 in. (13 examples from China, Formosa, and Pescadores 
Islands measured), 9. 4-47 to 4°60 in. (7 examples mea- 
sured). 
The second primary is either between the fourth and fifth, 
or equal to or just below the fifth. 
The Blue Rock-Thrush of China, Petrophila s. pandoo does 
not occur in North China, but is found on the Yangtse and 
in South-east China. This bird may interbreed with 
P.s. manilla in South-east China, but there is no proof of 
this. 
