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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
Nerita helicinoides
BPBM 204781
Daniel B. Langford; Ditlev Due Thaanum
Ryukyu Islands
Nerita helicinoides
BPBM 204847
Daniel B. Langford & Ditlev Due Thaanum; Ditlev Due Thaanum
Ryukyu Islands
Nerita helicinoides
BPBM 228048
Langford & Thaanum; Thaanum, 1925
Ryukyu Islands
Nerita helicinoides
BPBM 228049
Langford & Thaanum; Thaanum, 1928
Ryukyu Islands
Nerita helicinoides
BPBM 228050
Langford & Thaanum; Thaanum, 1928
Ryukyu Islands