352 Transactions. — Botany. 



316. Bostrychia arbnscula. Fl. Nov.-Zel., p. 226. 



Bluff, Warrington, Dunedin, Banks Peninsula: Berggren. 

 Brighton (Otago), Lower Green Island beach : B. M. L. 

 Probablv common along the East Coast of the South Island : 

 B. M. L. 



317. Bostrychia rivularis (?), Harv. J. Ag., Anal. Algol., 



cont. iv.. p. 75. 

 I found a species of Bostrychia growing abundantly im- 

 mediately underneath the waterfall in Long Bay, near Akaroa 

 Heads. On forwarding some of it to Agardh, he considered 

 it was perhaps the same as the American B. rivularis, but see 

 footnote on B. simpliuscula (J. Ag., loc. cit., p. 73). 



318. Bhodomela ccespitosa. Fl. Nov.-Zel., p. 225. 

 Parimahu, &c. : Colenso. Bluff: Berggren. 



319. Bhodomela gaimardi. Fl. Nov.-Zel., p. 225. 

 Hawke's Bay : Colenso. Blind Bay, Akaroa : Lyall. 



320. Bhodomela traversiana, J. Ag., De Alg. N.Z. mar., 



p. 28. 



Chatham Islands : Travers. Bluff: Berggren. New Biver 

 Heads, Brighton (Otago), Lower Green Island beach, Moeraki: 

 B. M. L. 



It is but right to say that, on forwarding some of my 

 specimens to Agardh, he identified them merely as belonging 

 to the genus Bhodomela, but refused to give them a specific 

 name, as they were rather imperfect ; but there is certainly 

 abundant in Otago a species of Bhodomela which agrees well 

 with Agardh's description of B. traversiana. The same plant 

 is found from the Bluff to Moeraki, and if not B. traversiana 

 is an undescribed species. 



Polysiphonia. 



Our New Zealand list for this genus is still very far from 

 completion, and I have many plants of the genus which I am 

 quite unable to name. Some of these are probably new. The 

 following list can only be regarded as tentative. I have left 

 out a considerable number of species unknown to Agardh or 

 regarded by him as doubtful, though previously described 

 from New Zealand. One or two of these are British, and 

 probably represent wrongly identified New Zealand forms; 

 of the others none have been recently collected, and may 

 be left in abeyance until found again and redetermined. 

 Here, as elsewhere, I have not introduced any fresh species 

 to the list on my own authority alone, nor have I attempted 

 to classify the species under any of the sub-genera ; the 

 references given will enable the investigator to do so for 

 himself. 



