Mr. H. Seebohm on the Ornithology of Siberia. 14 
L. rubescens of Blyth. Jerdon seems to have been acquainted 
with all three states of plumage. The young and adult in 
summer plumage he describes under the name of L. certhiola 
(Pall.); but doubtful of the identity of the Siberian and Indian 
birds, he proposes the name of L. temporalis for the latter, 
in case they should afterwards be found to be distinct. The 
autumn plumage of the adult he describes as L. rudescens, 
Blyth, but alludes to that ornithologist’s opinion that it might 
be identical with Pallas’s bird. Salvadori’s Calamodyta dorie 
is L. certhiola in winter plumage from Borneo. WhenI was 
in Paris ?abbé David told me that the type of Locustella 
minor, David et Oustalet, was lost ; but he assured me, what 
I was already prepared to assert, that it is a bad species, and 
the name must sink into a synonym of L. certhiola. Full 
references to all these synonyms will appear in Dresser’s 
‘ Birds of Europe.’ . 
LocusteLtia ocHoTensis, Midd. 
Sylvia (Locustella) ochotensis, Midd. Sib. Reis. 11. p. 185 
(1851). Young in first plumage. 
Sylvia (Locustella) certhiola, Midd. Sib. Reis. i. p. 184 
(1851, nec Pall.). Adult. 
Locustella japonica, Cassin, Proc. Ac. Se. Phil. 1858, p. 194. 
Young. 
Locustella subcerthiola, Swinhoe, Ibis, 1874, p.154, Adult. 
Arundinax blakistoni, Swinhoe, Ibis, 1876, p. 382. Young 
in first winter plumage. 
The synonymy of L. ochotensis and L. certhiola have 
hitherto been in such hopeless confusion that I am glad to 
have an opportunity of putting them in something like order. 
When I was in St. Petersburg the curator of the Museum, 
with the politeness so characteristic of the Russians, gave me 
every facility for inspecting types and other interesting skins 
in the collection. I found that all the skins collected by Mid- 
dendorff near the shores of the Sea of Ochotsk, labelled re- 
spectively L. certhiola and L. ochotensis, belonged to one 
species, the former being adult birds, and the latter young in 
first plumage. The difference between them lay solely in the 
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