- 431 specimens collected from at least 12 countries
- 7 specimens identified from at least 2 countries
- 108 specimens used in 43 works
Progress
Collected From
- United Kingdom 312
- Japan 79
- Jersey 6
- France 4
- Brazil 3
- Madagascar 3
- Switzerland 1
- Norway 1
- Guernsey 1
- United States 1
- Spain 1
- Malaysia 1
Identified From
- United Kingdom 6
- France 1
Dates Collected
- 1860 – 1865 4
- 1865 – 1870 116
- 1870 – 1875 47
- 1875 – 1880 21
- 1880 – 1885 8
- 1885 – 1890 42
- 1890 – 1895 19
- 1895 – 1900 1
- 1905 – 1910 2
- 1910 – 1915 63
- 1915 – 1920 8
- 1920 – 1925 3
- 1945 – 1950 1