A BIBLIOGRAPHY of cave faunas is now being published (“Animalium Cavernarum Catalogus”, auctore B. Wolff, Pars 1: Vorwort; Einleitung, Band 1, S. 1-16; Band II, S. 1-32; Band III, S. 1-64. 18 M. Pars 2: Band I, S. 17-32; Band II, S. 33-64; Band III, S. 65-144. 18 M. Berlin, W. Junk, 1934). This work is to be completed in three volumes which will form respectively a biblio-graphy, a list of the caves and of the animals recorded from each, and a list of the animals found living in caves arranged in systematic order, and will be provided with an index in two partsan alpha betical list of the caves and another of the animals recorded. The first and second parts now issued contain the first section of the bibliography (32 pp.), of the list of caves arranged according to the countries in which they occur (64 pp.) and of the catalogue of animals recordedProtozoa, Coelenterata, Vermes, Crustacea and Insecta as far as the end of the Apterygota (144 pp.). The author is rendering useful service in bringing together the widely scattered references on cave faunas in the literature, and in carefully analysing the papers on the subject for the data recorded in the second and third sections of the work.