506 SUBANTAECTIC ISLANDS OlF NEW ZEALAND. [Marine Algae. 



Gigartina Kroneana, Rabenh. 



Drift-weed and rocks, Monument Harbour, Campbell Island ; R. M. L. 

 Mr. Gepp has thus named specimens Nos. 5 and 7 sent by me, and adds the 

 note, " Apparently. No authentic specimen seen by me. — A. Gepp." 



The following is Rabenhorst's description, kindly extracted by Mr. Gepp from 

 a paper entitled " Beitrage zur Meersalgen-Flora der Auckland Inseln," Hedwigia, 

 xvii (1878), p. 70. This paper I have, unfortunately, not seen : — 



" Gigartina Kroneana, Rabenh., nov. sp. — Vage ramosissima, durissima cornea, 

 dilute vel obscure brunnea ; stipite e basi dilatata ramis ramulisque 2-4 millim, 

 latis, tereti-compre£sis, ramulis ultimis (ordinis tertiae vel quartae) subulatis nunc 

 brevibus nunc elongatis (ad 3 cm. longis) rectis vel plus minus curvatis, axillis 

 obtuse angularibus ; cystocarpis subgloboso-capituli-formibus, singulis in ramellis 

 ultimis. 



" Einige, giite instructive Exemplare. Ihre nachste Verwandschaft diirfte sie 

 wohl in G. flahellata (Ktz., Tabul. phycol., xviii, Tab. 5) und in Sphaerococcus vagus 

 (Ktz., I.e., Tab. 76, fig. a) finden, zumal entspricht sie habituell letzterer (aus der 

 Mittelmeere) imserer Pflanzen ausserordentlich." 



Gigartina radula, J. Ag, 



Gigartina radula, J. Ag., Sp. Alg., ii, p. 278, 1851 ; Hook. f. & Harv., Handb. 



N.Z. Flora, p. 700, 1864. 

 Auckland Islands ; Hooker, R. M. L. Campbell Islands ; Hooker, R. M. L. 

 (Antarctic, North and South Pacific Oceans.) 



Gigartina macrocarpa, J. Ag. 



Gigartina pistillata, Hook. f. & Harv., Fl. Nov. Zel., ii, p. 252, 1855. G. macro- 

 carpa, J. Ag., Epicr. Florid., p. 683, 1876. 



* The Snares ; R. M. L. (New Zealand.) (Identified by A. Gepp.) 



Iridaea, Bory. 



Distribution. — Colder seas of both hemispheres. 



Iridaea micans, Bory. 



Iridaea micans, Bory, " Voyage de la Coquille," Botanique, p. 110, tab. 13, 

 1828 ; Hook. f. & Harv., Fl. Nov. Zel., ii, p. 252, 1855 ; J. Ag., Epicr. 

 Florid., p. 181, 1876. 

 Auckland Islands ; d'Urville. (Falkland Islands, Cape Horn, Valparaiso, 

 McMurdo Strait.) 



Iridaea laminarioides, Bory. 



Iridaea laminarioides, Bory, " Voyage de la Coquille," Botanique, p. 105, 



tab. 11, fig. 1, 1828 ; Hook. f. & Harv., Handb. N.Z. Flora, p. 701, 1864. 

 Auckland Islands ; d'Urville. (California to Alaska and southern America ; 

 apparently not found in New Zealand.) 



