ERRATA. 



/ 



In page 123, line 14 from bottom, omit " not."' 



In page. 182, after " Cheilostomata," pp. 8, 9, add p. 10. 

 After "Synoptical Classification of," for p. 12, ready. IX 



The initials 5. W. indicate Mr. Searles TFood, 

 and J. S. B., Dr. J. S. Bowerbank. 



