I have attached the photos which containing the three species of chiton. Kindly help me to identify this species and also possibly send me the key to identify the chitons.
Monograph of Living Chitons: https://books.google.com/books?id=mhQVrBrIpT0C&pg=PA45&lpg=PA45&dq=Keys+to+the+chitons&source=bl&ots=A1lNt_SBzG&sig=GLPTMPwHM8D-BL-QU3HUBqu0oN8&hl=en&sa=X&ei=xFjvVNLQLIv5UNGUguAL&ved=0CEIQ6AEwBjgK#v=onepage&q=Keys%20to%20the%20chitons&f=false