Treatise on Zoology—Anatomy, Taxonomy, Biology. The Gregarines: The Early Branching Apicomplexa. Volumes 1 and 2. Edited by I. Desportes and J. Schrével. Leiden (The Netherlands) and Boston (Massachusetts): Brill. $380.00 (two-volume set). Volume 1: xii + 375 p.; ill.; no index. Volume 2: iv + pp. 377-781; ill.; index on taxonomical names. ISBN: 978-90-04-25602-6 (two-volume set); 978-90-04-15571-8 (Volume 1); 978-90-04-24962-2 (Volume 2); 978-90-04-25605-7 (eb). 2013