- 3,815 specimens collected from at least 7 countries
- 303 specimens identified from at least 16 countries
- 1,449 specimens used in 27 works
Progress
Collected From
- Sweden 2,978
- United States 269
- Norway 206
- France 183
- Italy 82
- United Kingdom 64
- Isle of Man 33
Identified From
- Sweden 176
- United States 57
- France 28
- Ireland 7
- United Kingdom 6
- Australia 6
- Denmark 5
- Isle of Man 4
- Italy 3
- Falkland Islands (Malvinas) 3
- Antarctica 1
- Canada 1
- Finland 1
- South Georgia and the South Sandwich Islands 1
- Argentina 1
- Estonia 1
Dates Collected
- 1890 – 1895 2
- 1895 – 1900 53
- 1900 – 1905 890
- 1905 – 1910 1,500
- 1910 – 1915 24
- 1915 – 1920 13
- 1920 – 1925 364
- 1925 – 1930 270
- 1930 – 1935 154
- 1935 – 1940 71
- 1940 – 1945 74
- 1945 – 1950 262
Dates Identified
- 1895 – 1900 4
- 1900 – 1905 12
- 1905 – 1910 37
- 1910 – 1915 7
- 1920 – 1925 4
- 1925 – 1930 14
- 1930 – 1935 10
- 1955 – 1960 3