which that author regarded as a species of Asperococeus, may be identical with the present, it being very abundant throughout the Antarctic Islands, even so far as 64° south, where it inhabits the Icy Sea.
Plate LXIX. Fig. II. — 1, a portion of the frond, in an old state, exhibiting a depression from which the filaments are given off; 2, 3, and 4, spores which cover the whole surface of the frond; 5, full formed spore : — all highly magnified.
10. ASPEROCOCCUS, Lamour.
1. AsPEROCOCcrs echinatus, Grev., Alg. Brit. p. 49. t. 9. A. rugosus, Lamour. Essai, p. 62. Encseliiim echinatum, Ag. Sp. Alg. vol. i. p. 145. Hab. Lord Auckland's group ; on rocks in the sea, very common
11. CHORD ARIA, Agardh.
1. Chordama flagelliformis ; Ag. Sp. Alg. vol. i. p. 166. Syst. p. 256. Lpigb. Hydr. Ban. t. 13. Hook. Br. Fl. vol. ii. p. 275. Grev. Alg. Brit. p. 45. t. 7. Harv. Man. p. 45. Wyatt, Alg. Bantu, no. 57. Fucus flagelliformis, Turner, Hist. Fuc. t. 85. Engl. Bot. t, 1222.
Hab. Campbell's Island. {Br. Lyall.)
Apparently identical with the British plant.
12. SPHACELARIA, Lyngl.
1 . Sphacelaria funicularis, Mont. ; fronde basi stuposa in ramis paucis crassis ramulis densissime vestitis apice flabellatim partitis divisa, ramis ultimis fasciculatis elongatis fastigiatis circumscriptione obovatis ramulis elongatis articulatis dichotome pinnatis obsessis. S. funicularis, Motif. Prodr. Phyc, fyc, p. 13. Toy. au Pole Sud, Bot. Crypt, p. 38. 1. 14. f. 1.
Hab. Lord Auckland's group ; on rocks left by the tide, very abundant.
Radix magna, fills brunneis ramosis intricatis vel stupa obtecta. C'aulis 3-4 unc. longus, 1 lin. diam. subdichotome in ramos paucos divisus, totus densissime ramulis quadrifariis abbreviatis pinnulatis vestitus. Rami apice flabellatim fastigiati ; minores graciles, erecti, simpbces, ramulis dimorphis quadrifariis obsiti, aliis abbreviatis subappressis simplicibus subidatis, alteris elongatis dichotome pinnatis, pinnulis alteme furcatis vel sub-bipinnatis, pinnis pinnulisque elongatis remotis. Apices nunc acuti, nunc sphacelati, massam sporarum includentes. Color olivaceus. Substantia rigida, dura. Nearly allied to S. scoparia, Lyngb.
12. RHODOMELA, Ag.
1. Rhodomela glomerulata, Mont.; "fronde tereti filiformi siccitate longitrorsum striata ramosissima, ramis circumscriptione corymbosis iterum ramosis, ramentis lateraHbus simplicibus aut bifidis corniformibus fasciculum sessilem sticlndiorum oblongorum vel ovato-lanceolatorum sinu foventibus." Mont. Prodr. Pltyc. Antarct. p. 4. Toy. au Pole Sud, Bot. Crypt, p. 141.
Hab. Lord Auckland's group. (Admiral 17 Urville.)
The R. Gaimardi, Gaud.? of Montague is certainly our Polgsiphonia botryocarpa.
13. POLYZONIA, Suhr.
1. Polyzonia cuneifolia, Mont. ; surculo articulato polysiphonio repente, caulibus erectis filiformibus
