1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
3 specimens
Calliostoma punctulatum
BPBM 195432
C.F. Mant Ex Powell; Joseph Swift Emerson, 1930New Zealand
Neothais succincta
BPBM 68704
C.F. Mant Ex Powell; J.S. Emerson, 1930New Zealand
Phormidium autumale
BISH 552735 · Powell Jr., C.M.; et al., 1947
Mexico