The Zoologist

cover of The Zoologist, 4th series, vol 5 (1901)

The Zoologist appeared in four series:

• First series: 1843 – 1865 ( vol. 1 – 23); edited by Edward Newman

In general the first volumes were published in monthly issues of 32 pages, and also as an annual.

• Second series: 1866 – 1876 (vol. 1 – 11); edited by Edward Newman

The pages of the first and second series are, apart from prefaces, contents etc., continuously numbered: 1 to 5180. The issues are not numbered.

• Third series: 1877 – 1896 (vol. 1 – 20); edited by James Edmund Harting

Starting with the 3rd series, the issues are continuously numbered, and page numbering restarts at every new volume.

• Fourth series: 1897 – 1916 (vol. 1 – 20); edited by William Lucas Distant

The fourth series for some reason starts with issue no. 667, and is again continuously numbered, with page numbers restarting at every new volume.

For an overview of all issues, see this page in BHL.
See also the set in BSB (1st series vol 1 - 2nd series vol 11
And incomplete set in HathiTrust; id.