158 СЕВАМТАСЕАЕ 
Australian plant. Тһе segments of the terminal branches аге 
more numerous and have more nearly confluent corticated zones 
than is indicated by Harvey. 
CENTROCERAS Kiitz. Linnaea 15: 731, 741. 1842. 
1. А6, Sp. МЕ. 2: 147, 1851; 3: 107. 
| 1876 
CENTROCERAS CLAVULATUM (Ag.) Mont. in Durieu, Fl. Algérie 
I: 140. 1846. J. Ag. loc. cit. Mont. in Sagra, Hist. 
Fis. Pol. y Nat. Cuba 9: 23. 
B XLI 184 
Ceramium clavulatum Ag. in Kunth, Syn. Pl. Aeq. т: 2. 1822. 
Centroceras cryptacanthum Kütz.loc.cit. 741. 1842; Tab. Phyc. 
I3: Ph 17. f. а-а. 1863. 
Centroceras micracanthum Kiitz. loc. cit.; Tab. Phyc. 13: pl. 18. 
f. a-d. x 
Centroceras leblacanthum Kütz. loc. cit.; Tab. Phyc. 13: pl. 18. ` 
f. ев. | 
Centroceras macracanthum Kiitz. loc. cit.; Tab. Phyc. 13: pl. 10. 
f. ах. 
Centroceras hyalacanthum Kiitz. loc. cit. 742; Tab. Phyc. 13: Pl. 
19. f. d-f. 
Centroceras oxyacanthum Kiitz. loc. cit.; Tab. Phyc. 13: pl. 20. 
f. а-с. i 
Centroceras inerme Kiitz. Sp. Alg. 688. 1849; Tab. Phyc. 13: pl. 
17. f. e-g. 
Centroceras brachyacanthum Kiitz. Tab. Phyc. 13: 8. pl. 20. f. d-f. 
On surf-washed rocks, Chincha Islands, July 13, 1908, Coker 
493 РР. The original of Agardh's Ceramium clavulatum, with 
which Dr. Coker's specimen essentially agrees, was brought from 
Callao by Humboldt.* Kützing's Centroceras cryptacanthum B 
longiarticulatum was originally described from the coast of Реги. 
Piccone (Alg. Vettor Pisani 53, 54. 1886) mentions Peruvian 
specimens of Centroceras clavulatum under the varietal names 
brachyacanthum and inerme. 
Ce ни ла НЕ 
* For notes оп Agardh's type, see Bull. Torrey Club 38: 509. 1911. 
