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"Cephalaspidean" heterobranchs (Gastropoda) from the Pacific coast of Costa Rica
Ser 4, Vol 55, Page 459, Date 2004
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The Marine Gobies of the Hawaiian Islands
Ser 4, Vol 55, Page 498, Date 2004
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Two new species of dorid nudibranchs (Mollusca, Opisthobranchia) from Bahia de Banderas and La Paz, Mexico
Ser 4, Vol 55, Page 550, Date 2004
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Two new cardinalfish species of the genus Apogon from Easter Island
Ser 4, Vol 55, Page 561, Date 2004
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Allenbatrachus meridionalis, a new toadfish (Batrachoididae) from Madagascar and Reunion
Ser 4, Vol 55, Page 568, Date 2004-12-30
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The California Academy of Sciences Gulf of Guinea Expedition (2001) II. Additions and Corrections to Our Knowledge of the Endemic Amphibians of São Tomé and Principe
Ser 4, Vol 55, Page 573, Date 2004-12-30
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New data on tropical eastern Pacific Chromodorididae (Nudibranchia: Doridina) with description of a new species of Mexichromis Bertsch, 1977
Ser 4, Vol 55, Page 588, Date 2004
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A new species of Oscarella (Demospongiae: Plakinidae) from California
Ser 4, Vol 55, Page 598, Date 2004-12-30
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A phylogenetic analysis of the Aegiridae Fischer, 1883 (Mollusca, Nudibranchia, Phanerobranchia) with descriptions of eight new species and a reassessment of phanerobranch relationships
Ser 4, Vol 55, Page 613, Date 2004
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Acanthaceae of Sonora: Taxonomy and Phytogeography
Ser 4, Vol 55, Iss 35, Page 690, Date 2004-12-30