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:

Species 2000 Secretariat
Naturalis Biodiversity Center
P.O. Box 9517, 2300 RA Leiden, Netherlands

Tel: +31 71 751 9362

Help Desk:

Annual Checklist DVD requests

The Annual Checklist database and software on the DVD are identical to those on the web at Copies of the DVD (or next 2018 edition that will be released in April 2018) can be requested free of charge from Species 2000 Secretariat by emailing to