ERKATA, 



Page 

 65, lines 17 and 32, for Acanthodrilis read Acanthodrilus. 



94, line 22, for Fakes read Eyes. 



101, line 27, for cocolorous read concolorous. 



113, line 31, /or lateral read central. 



162, line 29, for Debranchiata read Dibrancliiata. 



162, line 38, for perouii read peroni. 



166, line 9, for terrebelloides read terebelloides. 



168, line 34, for Italiotidse read Haliotidse. 



170, line 6, for mangei read maugei. 



171, line 22, for Onchadella read Onchidella. 



172, line 24, for Apliysiida read Aplysiidse. 



172, line 29, for novo-zealandica read uovae-zealandiiB. 

 174, line 28, for lumbata read lambata. 



196, last line, /or cathymetrical read bathymetrical. 



197, line 31, /or quinqualoculine read quinrineloculine. 



198, line 4, et seq., for W. and T. read W. and Y. 



