Studies On Apus, Limulus And Scorpio is a scientific book written by Edwin Ray Lankester and published in 1881. The book focuses on the anatomy, physiology, and behavior of three different arthropods: Apus, Limulus, and Scorpio. The first section of the book is dedicated to Apus, a genus of freshwater crustaceans commonly known as fairy shrimp. Lankester provides a detailed description of the external and internal anatomy of Apus, including its nervous system, digestive system, and reproductive organs. He also discusses the behavior and ecology of Apus, including its habitat preferences and feeding habits.The second section of the book focuses on Limulus, a genus of marine arthropods commonly known as horseshoe crabs. Lankester provides a detailed description of the anatomy and physiology of Limulus, including its circulatory system, respiratory system, and nervous system. He also discusses the behavior and ecology of Limulus, including its mating habits and the role it plays in the marine ecosystem.The final section of the book is dedicated to Scorpio, a genus of arachnids commonly known as scorpions. Lankester provides a detailed description of the external and internal anatomy of Scorpio, including its nervous system, digestive system, and reproductive organs. He also discusses the behavior and ecology of Scorpio, including its habitat preferences and feeding habits.Overall, Studies On Apus, Limulus And Scorpio is a comprehensive and detailed scientific book that provides valuable insights into the anatomy, physiology, and behavior of three different arthropods. It is a valuable resource for anyone interested in the study of these fascinating creatures.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.