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194 Mr. H. Seebohm on the Ornithology of Siberia. 
CaALIDRIS ARENARIA (Linn.). 
Numerous flocks of this species were seen by the Swedish 
Expedition of 1875 at the mouth of the Yen-e-say’. 
TRINGA TEMMINCKI, Leisl. 
This species was first met with by Dr. Theél on the 22nd 
of July, in lat. 654°, which probably represents the southern 
limit of its breeding-range. 
ANAS BoscHas, Linn. 
Dr. Theél observed the Mallard up to He 60°. 
Fuxicuca cristata (Leach). 
Dr. Theél shot a Tufted Duck in lat. 68°. 
C(ipEemia Fusca (Linn.). 
Dr. Theél observed the Velvet Scoter in lat. 69° and 694°, 
STERNA LONGIPENNIS, Nordm. 
Dr. Theél obtained a Tern in lat. 68°, which Mr. Meves ' 
has identified as belonging to this species. 
In my first paper on the ornithology of Siberia, I fear that 
I scarcely did justice to Prjevalsky. It appears that I was 
misinformed as to the scientific knowledge of ornithology 
possessed by this great traveller. His fame as an explorer of 
almost unknown districts of Central Asia, however, is so 
great that it almost obscures the fact that he has added very 
largely to our knowledge of the ornithology of that interesting 
region. 
I may also take this opportunity of expressing my pro- 
found regret at the untimely death of my friend, Valerian 
von Russow. He had been engaged for some months in an 
ornithological expedition in Turkestan. Just before his 
return home I had a letter from him, dated Samarcand, 
telling me of his success; the next intelligence I received 
was that he had died of smallpox within a week of his arrival 
in St. Petersburg. In Russow ornithology has lost an 
enthusiastic field-naturalist, who was rapidly acquiring the 
scientific knowledge of birds which can only be attained 
where large series of skins are available for comparison. 
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