Chiefly German with some articles in English, French, or Italian.
Vols. for 1891-95 include separately paged section "Litteratur," which in earlier vols. was published as part of text. Beginning 1896 continued as a separate publication under title Bibliographia zoologica, and v. 1-22 issued as supplement to Zoologischer Anzeiger.
Vols. for 1925-1939 have supplement: Deutsche Zoologische Gesellschaft. Verhandlungen der Deutschen Zoologischen Gesellschaft (1891); 1948-1949 have supplement: Deutsche Zoologische Gesellschaft. Verhandlungen der deutschen Zoologen; 1950-1970 have supplement: Deutsche Zoologische Gesellschaft. Verhandlungen der Deutschen Zoologischen Gesellschaft (1951).