(112) 



After the printing of a large part of this memoir I received the 



"Notes on some British Nudibranchs " (Journ. of the Marine 

 Biological Association, vii., 3, 1906, pp. 333-382, with 2 pi.), 

 by Sir Charles Ehot, 



and 



" Opisthobranchiate Mollusca from Monterey Bay, California, 

 AND Vicinity" (Bull, of the Bureau of Fisheries, xxv., 1905, 

 pp. 111-151, with 14 pi.), by Prof. MacFarland. 



I therefore have not been able here to use the general and special 

 notices contained in these papers. 



