of the Isthmus of Panama. The collections from this expedition were used by many
authors to describe new echinoderm species (e.g. Agassiz 1892, 1898, 1904;
Ludwig 1894, 1905; Lütken and Mortensen 1899, (Fig. 4.3c, d), Clark 1917).
In the 1930’s and 1940’s expeditions to the eastern Pacific were undertaken by
the New York Zoological Society onboard the Arcturus 1925 and Zaca
1937–1938, and by the Allan Hancock Foundation onboard the Velero III
1937–1941. As a result of these expeditions, a significant amount of echinoderm
research was published (e.g. Clark 1939; Clark 1940, 1948; Ziesenhenne 1940,
Fig. 4.3 a Addison Emery Verrill, b Alexander Agassiz, c Christian Frederik Lütken,
d Theodore Mortensen (photos courtesy of the Smithsonian National Museum of Natural History)
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111
authors to describe new echinoderm species (e.g. Agassiz 1892, 1898, 1904;
Ludwig 1894, 1905; Lütken and Mortensen 1899, (Fig. 4.3c, d), Clark 1917).
In the 1930’s and 1940’s expeditions to the eastern Pacific were undertaken by
the New York Zoological Society onboard the Arcturus 1925 and Zaca
1937–1938, and by the Allan Hancock Foundation onboard the Velero III
1937–1941. As a result of these expeditions, a significant amount of echinoderm
research was published (e.g. Clark 1939; Clark 1940, 1948; Ziesenhenne 1940,
Fig. 4.3 a Addison Emery Verrill, b Alexander Agassiz, c Christian Frederik Lütken,
d Theodore Mortensen (photos courtesy of the Smithsonian National Museum of Natural History)
4 Echinoderm Diversity in Panama
111