Contact us

Users of the Catalogue of Life are encouraged to provide feedback to the Species 2000 Secretariat and to ITIS. Enquiries about the Catalogue of Life, contributing databases or Species 2000 orgaisation should also be directed to:

CoL Secretariat
Species 2000
Naturalis Biodiversity Center
Darwinweg 4, 2333 CL Leiden, Netherlands

Tel: +31 71 751 7363

Help Desk:

Annual Checklist DVD requests

The Annual Checklist database and software on the DVD are identical to those on the web at Further copies of the DVD (or the 2016 edition that will be released in March-April 2016) can be requested free of charge from the Species 2000 website ( or by emailing