Corrigenda. 



' Page 410, line 2 from bottom—" 5 " sJwuld read " g." 



Page 538 — the first line should be deleted. It has been " lifted " from between 

 last line of page 539 and first line of page 540, where it should be read in. 



Pages 599, 600, 601, Figs. Plate XIX.— E and B refer to figs. 1 and 2 ; D to 

 fig. 3 ; A and C to figs. 4 and 5. 



