Acemthophora] floride m (Barton). 327 
11. ACANTHOPHORA Lam.in Ann. Mus. Hist. Nat. Paris, 
xx. 132, L813. 
1. A. Thierii Lam., I.e. 
Loanda. — On shells near the Bhore of the island Loanda and Qha 
dos Passeros ; Jan. and April L854. Xo. 112. Loanda; Oct. L853. 
No. 113. On oyster-shells near Oabo Lombo ; 28 Nov. 1863. No. 114. 
12. POLYSIPHONIA Grev. Flora Edin. 308. 
1. P. elongata Harv. in Hook. Brit. Flora p. 333. 
LOANDA.— On rocks on the Atlantic shores of Loanda near Port 8. 
Pedro and Conceicao, frequently thrown up : Dec. 1853 and Jan. 
1854. No. 52. 
2. P. pennata J. Ag. Alg. Med. p. 141. 
Loanda. On rocks of the Loanda shore near Fort 8. Pedro ; Feb. 
1854 Penedo, July L854. No. 96. 
1 3. BOSTRYCHIA Mont, in Sagra Hist. Cuba, Paris, 1838-42, 39. 
1. B. tenella J. Ag. Sp. Alg. vol. ii. pt. 3, p. 369. 
Loanda- On trunks of Rhizophora Mangle immersed at high water, 
near Cabo Lombo. on the shores of Loanda, occurring rarely, but 
always broadly csespitose, covering the trunks exactly like a Hypnum ; 
29 Nov. L853. Nos. 59. 60. 
14. SPYRIDIA Harv. in Hook. Br. El. ii. pt. i. 1833, 336. 
1. S. aculeata Kiitz. Phyc. Gen. p. 377. 
St. Vim r.vr. Cape de Vi km:.— 22 Aug. J853. No. 217- 
2. S. clavata Kiitz. in Linn. 1841, p. 7 1 I. 
LOANDA.- On the shore, thrown up by the ocean ; this one specimen 
near Fort de Conceicao ; Jan. 1854. Ko. 58- 
15. CERAMIUM Roth, Cat. Bot. iii. 106. 
1. C. diaphanum Roth., I.e., p. 154. 
Loanda. — Morro das Lagostas, on a species of Hypnea, etc.; Jan. 
1854. Nos. 67. and on 65. 
16. CENTROCERAS Kiitz. in Linnsea, 1841, 741. 
1. C. clavulatum .Mont. Fl. Alg. p. 140. 
Loanda. — On rocks covered by sand on the shore near Fort de 
Conceicao; Dec. 1853. No. 61. Near S. Pedro; Feb. and April L854. 
No. 64- On rocks of the sea near Morro das Lagostas and S. Pedro, 
frequent ; Jan. 1854. No. 66. 
17. PEYSSONELIA Dene. PI. Arab. 168. 
1. P. rubra J. Ag. Sp. Alg. ii. p. 502. 
LOANDA — On rocks and various algae, Praia tie Penedo : Jan and 
Feb. 1854. No. 121. 
[sland of Loanda. May 1854. No. 123. 
St. Vincent, Cape di Verde. On rocks and various alga near 
volcanic rocks, bul rarely well developed ; 22 Aug. L853. No. 233. 
Prince's [sland. On rocks in the Atlantic here and there, grow- 
ing gregariously ; 21 Sept. 1853. No. 256 
