1. The reader will find listed below only references that are not included in my book, Les chromosomes des Vertébrés (Rouge, Lausanne, 1949, 356 pp.). This bibliography, rather than listing the works cited in the article, complements the one already published in that book; both together now include all the references up to January 1, 1951.
2. Chromosome Structure in Amblystoma punctatum
3. Chromosomes of the Genus Peromyscus (Deer Mouse)
4. Darlington, C. D., 1947-49, 38th, 39th, 40th Annual reports of the John Innes Horticultural Institution, London.
5. Meiosis in Dasyurus viverrinus