ERRATA. 



P. 7. The number of Antarctic species should be 140 instead of 128. 

 P. 16, line 23. "Phyllococe" should read " Phyllodoce." 



P. 19. In the list of Macquarie Island species, "assimils" in penultimate line should 

 read " assiniilis." 



P. 25, line 4. For "a symmetrical" read "an asymmetrical." 



P. 73, line 13 from foot. Last words " S. claparedi" should read "O. claparedi." 



P. 85, line 5. "Introduction, p. 10" should read " p.x." 



P. 122. I did not see proofs of the plates, and unfortunately the letterings of certain 

 figures illustrating the structure of Phyllocomus, and Ainythas have been 

 omitted. 



P. 1^5. " Dibranchiata Phyllcomus" should read " Phyllocomus." 



