Publication
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Dolichopodidae von Formosa Article
Zoologische Mededelingen, 8(9), 120-131.January 1924
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On two different growth-forms of Merulina laxa, Dana Article
Zoologische Mededelingen, 8(4), 36-38.January 1924
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Opilioniden aus Sumatra Article
Zoologische Mededelingen, 8(10), 132-144.January 1924
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Rhizostomeen von Manila Article
Zoologische Mededelingen, 8(5), 39-54.January 1924
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West-Indische Enteropneusten Article
Bijdragen tot de dierkunde, 23(1), 33-60.January 1924
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Anthozoen des Leidener Museums Article
Zoologische Mededelingen, 8(1), 1-17.January 1924
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Ascidians from Curaçao Article
Bijdragen tot de dierkunde, 23(1), 23-32.January 1924
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Opilioniden aus Java Article
Zoologische Mededelingen, 8(12), 152-152.January 1924