PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 291 

 Table II — Coutinued. 



With the above data and those comprised in my report on the Lim- 

 pets and Chitons of Alaska, «&c,, students should be pretty well able to 

 refer any Chiton of whose characters they have made themselves masters 

 to its proper place in the general classification. 



NOVEMEER 30, 1881. 



