CORRIGENDA. 



In the head-lines to sheets 17, 18, and 19, (p. 129, et seq.),for " Pulmonata," read " Frosobranchiata." 

 Page 126, line 10, for " Cyprasa," read " Cypraeae." 



133, „ 14, for "figs. 3 a — d," read " figs. A a — c." 



134, „ 27, for " Basingstoke," read " Cuffel, near Basingstoke." 

 155, „ 28, for " (t. 25')," read " (t. 5.)" 



155, „ 30, after the word size, insert " axis, 1 in. and ^jths ; diameter f ths of an inch." 

 158, „ 14, for "figs. 4a — o," read "figs. 4a — d." 



160, „ last line but one; after axis, insert "2 inches, nearly;" and after diameter, insert, " 1 in. and T ' 5 th 

 168, „ 33,/or " figs. 2 a—b," read " figs. 3 a—b." 



First reprinting, 1966, Johnson Reprint Corporation 

 Printed in the United States of America 



