The California Academy of Sciences produces three series of publications containing the results of original research conducted by the scientific staff and research associates of the institution and others. Taxonomy, systematics, biogeography, and natural history are the principal research foci of these papers. Occasional Papers numbers 1-154 are available. Proceedings include 58 volumes with several issues (numbers) in each volume. Proceedings are available by subscription, $75.00 annually. Memoirs (Numbers 6-28 available) consist of monographs, symposium proceedings, floras, and more.