Marine Algae.] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 521 



Ceramium virgatum, Hook. f. & Harv. 



Ceramium virgatum (?), Hook, f, & Harv., Fl. Nov. Zel., ii, p. 256 ; J. Ag., Anal. 

 Algol., cont. ii, p. 45, 1894. 



* Auckland Islands ; J. C. S. ! (New Zealand.) 



A fragment apparently belonging to this species occurs amongst those sent 

 me by Mr. Crosby Smith. It bears tetraspores, but is almost too small for certain 

 identification. 



Ceramium apiculatum (Hook. f. & Harv.), J. Ag 



Ceramium cancellatum (partim). Hook. f. & Harv., Fl. Nov. Zel., ii, p. 256, 1855. 

 C. apiculatum, J. Ag., Epicr. Florid., p. 105, 1876 ; J. Ag., Anal. Algol., 

 cont. ii, p. 20, 1894. 



Auckland Islands ; Hooker. (New Zealand; J. Ag.) 



Ceramium cancellatum is a species from the Cape of Good Hope, considered by 

 Agardh to be quite distinct from the New Zealand plant, which he describes as fol- 

 lows (Epicr. Florid., loc. cit.) : " C apiculatum fronde elatiore compressa distiche 

 pinnata pinnis dichotomo-pinnulatis subcorymbosis, segmentis patentibus, terminali- 

 bus eximie divaricatis apiculatis, articulis inferioribus diametro subbrevioribus ubique 

 corticatis, sphaerosporis strato corticali immersis in segmentis antepenultimis cir- 

 cumcirca verticillatis, in verticillo pluribus, parum prominulis favellis." 



Ceramium vestitum (?), Hook. f. & Harv. 



Ceramium vestitum, Hook. f. & Harv., Fl. Nov. Zel., ii, p. 256, 1855. 



Antipodes ; Cockayne ! 



I forwarded a species of Ceramium collected by Dr. Cockayne at Antipodes, and' 

 it was returned as Ceramium vestitum, Harv. (?) [C. Stichidiosum affine), {vide also 

 J. Ag., Epicr. Florid., p. 106). Agardh has also identified doubtfully some sterile 

 specimens collected by Berggren at Dunedin and Banks Peninsula as belonging to 

 this species (Anal. Algol., cont. ii, p. 40). His plants are minute, more slender than 

 C. rubrum, but completely corticated, the lower internodes apparently showing the 

 characteristic reticulated appearance of C. rubrum. The joint-cells are a little longer 

 than broad. The primary pinnae branch outwards in all directions, and the thallus 

 is densely clothed on all sides with prolifications. This characteristic he thinks may 

 have led to the specific name vestitum. Harvey's original specimens came from 

 Stewart Island ; his diagnosis, however, is not sufficiently discriminative to enable 

 the species to be identified with certainty without comparison with his type speci- 

 mens. He considered his species as perhaps a state of C. rubrum. 



Ceramium stichidiosum (?), J. Ag. 



Ceramium stichidiosum, J. Ag., Epicr. Florid., p. 105, 1876 ; J. Ag., Anal. Algol., 

 cont. ii, p. 21, 1876 ; ■ C. stichidiosum, J. Ag., var. Smithii, R. M. L. (var. 

 nov.), 1909. C. stichidiosum, J. Ag., var. scopulorum, R. M. L. (var. 

 nov.), 1909. 



I had originally intended to describe certain specimens of Ceramium from 

 Enderby Island and the Snares, collected by Mr. J. Crosby Smith, as a new species, 



