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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
Cypraea isabella
BPBM 246262
George Willett; Thomas A. & Beatrice Burch
Laysan
Cypraea fimbriata
BPBM 247678
Goerge Willett; Thomas A. & Beatrice Burch, 1936
Laysan
Cypraea sulcidentata
BPBM 247859
George Willett; Thomas A. & Beatrice Burch
Laysan
Haminoea
BPBM 258666
Geo. Willett; Thaanum, Ditlev, 1913
Laysan
Placiphorella rufa
BPBM 225124
Geo. Willett; Thaanum, 1914
Alaska
Lepidochiton raymondi
BPBM 225148
Geo. Willett; Thaanum
Alaska
Schizoplax brandti
BPBM 225153
Geo. Willett; Thaanum, 1917
Alaska
Dentalium pretiosum
BPBM 225404
Geo. Willett; Thaanum
Alaska
Conus nussatella
BPBM 239255
Willett, George; Thaanum, 1913
Laysan
Cypraea achatidea
BPBM 246258
George Willett; Thomas A. & Beatrice Burch, 1942
Mediterranean Sea
Cypraea cicercula
BPBM 247113
George Willett; Thomas A. & Beatrice Burch
Laysan
Cypraea sulcidentata
BPBM 247188
G. Willett; Thomas A. & Beatrice Burch
Laysan
Cypraea gaskoini
BPBM 247849
George Willett; Thomas A. & Beatrice Burch, 1943
Oʻahu
Cypraea luchuana
BPBM 247871
George Willett; Thomas A. & Beatrice Burch
Ryukyu Islands?
Limneria prolongata
BPBM 255030
George Willett; Ditlev Due Thaanum
Alaska
Otopleura mitralis
BPBM 257108
Geo. Willett; Thaanum, Ditlev, 1913
Laysan
Williamia radiata
BPBM 259138
Geo. Willett; Thaanum, Ditlev
Laysan
Siphonaria thersites
BPBM 259238
Geo. Willett; Thaanum, Ditlev
Alaska
Siphonaria thersites
BPBM 259239
Geo. Willett; Thaanum, Ditlev
Alaska
Musculus seminudus
BPBM 260539
Geo. Willett; D. Thaanum, 1914
Alaska
Musculus vernicosa
BPBM 260548
Geo. Willett; D. Thaanum
Alaska