ERRATA. 
P. 7.—The number of Antarctic species should be 140 instead of 128. 
P. 16, line 23.—“Phyllococe” should read “ Phyllodoee.” 
P. 19.—In the list of Macquarie Island species, “assimils” in penultimate line should 
read “ assimilis.” 
P. 25, line 4.—For “a symmetrical” read “an asymmetrical.” 
P. 73, line 13 from foot.—Last words “ S. claparedi” should read“0. claparedi.” 
P. 85, lii^e 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 Amythas have been 
omitted. 
P. 125.—“ Dibranchiata Phyllcomus” should read “ Phyllocomus.” 
