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Phage typing schemes for Bacillus subtilis and B. thuringiensis were constructed using 98 phages and 743 bacterial strains. Most phages were host-species-specific. Phages were classified by electron microscopy. The B. subtilis scheme includes 10 phages and 29 phage types. The B. thuringiensis scheme comprises 8 phages and 25 phage types and can be applied to B. cereus. There is no correlation between H antigen serotypes and phagovars in B. thuringiensis. Characteristics of typing phages are described for identity control.