Codmvi] CHLOROPHYCEiE (Barton). 325 



5. CODIUM Stackh. Ner. Br. p. xvi. 



1. C. elongatum Ag. Sp. Alg. p. 454. 



LoANDA. — Thrown up on the shores of the island, near S. Pedro; 

 Oct. 1853 ; Feb. and May 1854. No. 48- 



2. C. tomentosum Stackh. Ner. Br. p. 24. 

 LoANDA. — Frequent ; Feb. 1854. No. 47. 



6. HALIMEDALam.inNouv.Bul].Soc.Philom.Nov.l8l2,18e. 

 1. H. Tuna Lam. Hist. Polyp, fl. p. 309. 



St. Vincent, Cape de Verde.— Rare on basaltic shore ; Aug. 1853. 

 No. 247. 



PH^OPHYCEiE. 



1. CYSTOSEIRA Ag. Sp. Alg. i. 50. 



1. C. Abies-marina Ag. Sp. Alg. i. p. 54. 



St. Vincent, Cape de Verde. — Rather frequent and well-developed 

 on volcanic rocks near Praia de Gale ; 20 Aug. 1853. No. 221. 



2. PADINA Adans. Fam. des Plantes, pt. ii. 13. 



1. P. Pavonia Gaill. Diet. Class. Nat. vol. xii. p. 589. 



Luanda. — On rocks close to the shore of the ocean near S. Pedro, 

 frequent ; Feb. and July 1854. No. 40- 



St. Vincent, Cape de Verde.— Thrown up near Praia de Gale ; 

 Sept. 1853. No. 210- 



3. DICTYOTA Lam. in Desv. Journ. Bot. ii. 38. 



1. D. dichotoma Lam. Essai p. 58. 



Prince's Island. — On rocks of the ocean, not infrequent, close to 

 the shore. Bahia de S. Antonio ; 20 Sept. 1853 No. 258. 



4. HYDROCLATHRUS Bory in Diet. Class, viii. 1825, 419. 



1. H. cancellatus Bory, I.e. 



Loanda. — Thrown up by the Atlantic at Praia de Gamba, frequent ; 

 4 Dec. 1853 ; 3 Feb. 1854. No. 45. 



5. COLPOMENIA Derb. & Sol. Mem. Phys. Alg. 11. 



1. C. sinuosa Derb. & Sol. I.e. 



LoANDA. — Thrown up by the ocean near S. Pedro, very rare. No. 44. 

 Madeira.— Funchal, 1852. No. 265. 



FLORIDE^. 

 1. GALAXAURA Lam. Polyp. Flex. 259. 



1. G. fragilis Dene. Corall. p. 104. 



Very frequtnt on the shores of St. Vincent, Cape de Verde, 

 thrown up by the sea in gi-eat abundance. 



Island of St. Vincent, Cape de Verde. — On volcanic rocks near 

 Praia de Galfe, especially frequent ; 21 Aug. 1853. No. 220. 



2. G. obtusata J. Ag. Sp. Alg. vol. iii. pt. 1, p. 525. 

 Loanda.— 1854. No. 275. 



VOL. II. 22 



