372 welwitsch's African marine alg.t;. 



oil calcareous and saudstone submarine rocks near Mossamedes ; 

 July, 1859. No. 77. St. Vincent, Cape de Verde : on the shore, 

 Praia de Gale ; Aug. 1853. No. 230. 



Geogr. Diatr. Atlantic, Mediterranean, Cape of Good Hope, 

 China Sea. 



8. Gelidium Lam. in Ann. Mus. Hist. Nat. Paris, xx. 1813, 128. 



1. G. coRNEUM Lam. Benguella : on Patellae thrown up by the 

 Atlantic near Benguella ; June, 1859. No. 75. Loanda : on rocks 

 near S. Pedro, frequently covering all the rocks ; July, 1854. No. 50. 



Geogr. Distr. Throughout all oceans. 



4. GiGARTiNA Lam. Ann. Mus. Hist. Nat. Paris, xx. 1813, 134. 

 1. G. Teedii J. Ag. Loanda: Morro das Lagaotas, rare ; July, 

 1854. No. 117. 



Geogr. Distr. Warm Atlantic, Mediterranean, Cape of GoodHope. 



5. Flahaultia Born. Alg. Schousb. 278. 



1. F. palmata, sp. u. Fronde gelatinoso-membranacea, evi- 

 denter stipitata, a disco radicali in laminam usque 25 cm. altam, 

 subpalmatam, aut in lacinias irregulariter fissam, cuneatim expansa ; 

 margine sa^pe prolifero ; segmentis fertilibus minute fimbriatis ; 

 cystocarpiis margiualibus, carpostomio apertis. Soris tetrasporarum 

 indefinitis per totam superficiem sparsis. (Plate 373.) 



A F. appendicnlnta Born., liabitu nonnunquam subsimili, im- 

 primis differt cystocarpiis marginalibus et sporangiis per totam 

 frondem sparsis. 



Loanda : frequent near Morro das Lagostas; Jan. 1854. No. 65. 

 Angola, Fort Conceieao ; July, 1854. Nus. 78, 80. On shells and 

 rocks near Morro das Lagostas, frequent; Jan. 1854. No. 99. 



6. Gracilaeia Grev. Alg. Brit. 121. 

 1. G. confervoides Grev. Loanda: thrown up on the island, 

 rare ; Jan. 1854. No. 95. 



Geogr. Distr. Throughout all seas. 



7. Hypnea Lam. in Ann. Mus. Hist. Nat. Paris, xx. 131, 1813. 

 1. H. MUsciFORMis Lam. Loanda: when living, mostly pale 

 brown and fragile ; when thrown up and exposed to the air it 

 becomes flaccid and of a red, purple, and orange colour, variegated. 

 Fruit occurs rarely. Frequent and of various forms on rocks, shells 

 and other alga? on the shores of Loanda, where large quantities are 

 thrown up. On coralline rocks near S. Pedro; July, 1854. No. 84. 

 St. Vincent, Cape de Verde : on volcanic rocks and on other algfe 

 on the shore, frequent. Praia de Gale, Aug. 1853. No. 250. 

 Geogr. Di.^tr. Warm Atlantic, Indian and Southern Oceans. 



8. Rhodymenia J. Ag. Alg. Liebm. 15. 



1. R. PALMETTA J. Ag. Loaiula : on rocks at Morro das La- 

 gostas; Jan. 1854. No. 115. 



Geogr. Distr. North Atlantic. 



