and 
‘Campbell's Islands. | CRYPTOGAMIA ANTARCTICA. 79 
Prate LXXVII. Fig. 1, favella in situ; 2, the same removed with the involucre laid open; 3, spheerospores : 
— magnified. 
32. CERAMIUM, Adans. 
1. CERAMIUM rubrum, var. y, secundatum, Agardh, Sp. Alg. p. 149. Cer. secundatum, Zyngb. Hydr. 
Dan. 1.37. 
Var, e, tenue, Agardh, Sp. Alg. vol. ii. p. 149. 
Has. Lord Auckland's group and Campbell’s Island; both varieties abundant. 
2. CERAMIUM diaphanum, Agardh, Sp. Alg. vol. ii. p. 150. 
Var. B, Aucklandicum, proliferum, articulis brevibus. - 
Has. Lord Auckland’s group; not common. 
Apparently a curious state of the C. diaphanum., 
3. CERAMIUM cancellatum, Agardh, Sp. Alg. vol. ii. p. 145. 
Has. Lord Auckland's group; parasitic on other seaweeds, rare. 
Our specimen entirely agrees with others collected at the Cape of Good Hope, and with the description of Agardh ; 
it is doubtful, however, whether all may not be varieties of C. obsoletum, Ag., from which they differ mainly in the 
more branched and less virgate habit. One of our South African specimens is-so repeatedly branched, as eminently to 
justify Agardh’s character, * ramis distichis multifidis quasi cancellatis;" that from Lord Auckland’s group is taller 
and the extreme divisions alone retain that character ; neither of these are more than four inches long ; we have, how- 
ever, much larger examples, in which it is wholly lost. The station of Agardh's C. cancellatum is dubious, and his 
comparison of it with a plant brought from the Cape of Good Hope by Gaudichaud, renders it very probable that the 
Southern Ocean is its place of growth. 
33. GRIFFITHSIA, Agardh. 
1. Grirritusia setacea, Ag.? vol, ii. p. 129. 
Has. Lord Auckland’s group. 
Our young and mutilated specimens of what we refer to G. setacea are not sufficient for a satisfactory determi- 
nation of the species. The articulations are rather narrower than in the European plant, but they do not otherwise 
differ. 
34. CALITHAMNION, Zyngb. 
1. CALITHAMNION gracile, Hook. fil. et Harv.; filo primario repente ramoso, caulibus erectis laxe bi- 
tripinnatis, pinnis remotis valde elongatis, pinnulis brevibus alternis erecto-patentibus simplicibus v. apice 
ramulosis, articulis primariis diametro 4—5-plo, secundariis sub 3-plo longioribus. 
Has. Campbell’s Island; dredged up in four fathoms water. 
Fila 1-2 une. longa, gracillima, e fibrillis repentibus ramosis orta, laxe irregulariter alterne rarius opposite pin- 
natim divisa. Spherospore sessiles, minute, spherice. Favelle ignote. Articuli pellucidi. Color roseus. Substantia 
tenera. 
2. CALITHAMNION pectinatum, Mont.; “ microscopicum, filo primario repente pinnis pinnulisque oppo- 
