to Xantusia, the night lizard genera namesake of John Xantus, this dictionary covers everyone after whom an extant or recently extinct reptile has been named. The entries include a brief bio-sketch, a list of the reptiles that bear the individual's name, the names of reptiles erroneously thought to be associated with the person, and a summary of major contributions made by the person to herpetology and zoology. An introductory chapter explains how to use the book and describes the process of naming taxa.