510 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Marine Algae. 



Fam. RHODYMENIACEAE. 



Ehodymenia, Greville, 1830 (?). 

 Distribution. — Almost all seas. 



Rhodymenia linearis, J. Ag. 



Rhodymenia linearis, J. Ag., Spec. Alg., ii, p. 379, 1851 ; Hook. f. & Harv., 

 Fl. Nov. Zel, ii, p. 248, 1855. 



Auckland and Campbell Islands ; Hooker. (Australasia.) 



Rhodymenia corallina (Bory), J. Ag. (?) 



Sphaerococcus corallina, Bory, " Voyage de la Coquille," No. 66, 1828. Rhody- 

 menia corallina, J. Ag., Spec. Alg., ii, p. 379, 1851 ; Hook. f. & Harv., Fl. 

 Nov. Zel., ii, p. 248, 1855. 



Auckland Islands ; Hombron. (New Zealand, Tasmania, Kerguelen Land, 

 Chili.) 



J. Ag. (Epicr. Florid., p. 331) states that he is unable to decide whether this 

 plant occurs on the shores of New Zealand, as the specimens he has seen which 

 perhaps belong to this species are all sterile. It may therefore be doubted whether 

 our species is the same as the Chilian one. It has not been recently collected in 

 New Zealand ; and this adds to one's hesitation in identifying the New Zealand and 

 Chilian forms. 



Rhodymenia dichotoma, Hook. f. & Harv. 



Rhodymenia dichotoma. Hook. f. & Harv., Fl. Antarct., vol. i, p. 186, tab. 72, 

 fig. i, 1847. Callophyllis dichotoma, Kiitz., Spec. Alg., p. 746, 1849. 



* Auckland Islands ; R. M. L. Campbell Island ; Hooker, R. M. L., J. C. S. ! 



(Queen Charlotte's Sound; Lyall.) 



Kiitzing has transferred this species to the genus Callophyllis ; but specimens 

 of the plant collected by Mr. Crosby Smith at Campbell Island, and examined by 

 me, show the structure of a Rhodymenia, and not of a Callophyllis, in cross-sections 

 of the frond {vide Plate XXIV, fig. 3). Specimens collected by myself have been com- 

 pared with type specimens in the British Museum by Mr. Gepp, and also identified 

 as Rhodymenia dichotoma. I have seen no New Zealand examples of this species, 



Epymenia, Kiitz., 1849. 

 Distribution. — The Subantarctic Ocean, South Orkneys. 



Epymenia Wilsonis, Sonder. 



Epymenia obtusa, Kiitz., Sp. Alg., p. 787, 1849 ; Hook. f. & Harv., Fl. Nov. 

 Zel., ii, p. 249, 1855. E. Wilsonis, Sond. in Linnaea, p. 516, 1853. 



Auckland Islands ; Hooker. (Australasia.) 



Epymenia obtusa is a South African species, with which Harvey considered the 

 New Zealand form identical. Agardh, however, identifies the New Zealand species 

 with E. Wilsonis, Sonder (Anal. Algol., p. 92), (see also Laing, " List of New Zealand 



