70 



D. M. JOHN, J. H. PRICE, C. A. MAGGS & G. W. LAWSON 



Fig. 1 The coastline of tropical west Africa and the offshore islands. 



1, Salvage Islands: 2, Canary Islands; 3, * former Spanish Sahara [= Western Sahara, Spanish 

 West Africa] (includes the often-quoted Rio de Oro, the southern region of the country, but excludes 

 Ifni); 4, Mauritanie; 5, Senegal; 6, Gambia; 7, Guinea-Bissau [= Portuguese Guinea]; 8, Guinee; 

 9, Sierra Leone; 10, Liberia; 11, Cote d'lvoire; 12, Ghana; 13, Togo; 14, Benin [= Dahomey]; 

 15, Nigeria; 16, Cameroun; 17, t Macias Nguema Biyogo [ Fernando Poo]; 18, Principe; 19, Sao 

 Tome; 20, t Equatorial Guinea [= Spanish Guinea]; 21, Gabon; 22, J Republic of the Congo; 23, 

 Cabinda; 24, Zaire [= Congo Republic]; 25, Angola; 26, Namibia [= South West Africa]; 27, 

 Ascension Island; 28, Saint Helena; 29, Pagalu [= Annobon]. The Cape Verde Islands, which lie 

 immediately to the west of Dakar (Senegal), have been omitted from this map but are included in 

 the species list. 



* The former colony of Spanish Sahara no longer officially exists, the territory it once covered being 

 divided, by agreement, between Morocco and Mauritanie. The effective date of the division, Spain 

 concurring, was 28 February 1976, although guerilla opposition delayed matters until a formal agree- 

 ment on 14 April 1976. The attempt to maintain the territory as the Democratic Saharan Arab Republic 

 has apparently entered 'the realm of myth' (Gretton, 1976). The authors' citation terminology is main- 

 tained throughout the records. 



t Nos 17 (Macias Nguema Biyogo) and 20 (Spanish Guinea, = Rio Muni) on the original map (Part I) 

 are now jointly administered as Equatorial Guinea. 



$ Loango, a name much used by early collectors such as Welwitsch, was formerly a coastal region of west 

 Africa. Its application appears to have included much of the coastline of the Republic of the Congo (22), 

 as well as of Cabinda (23) and Zaire (24). Because by far the longest and rockiest part of the Loango 

 coast lies now within the Republic of the Congo we have attributed all marine algal records from Loango 

 to the Congo. 



Namibia, previously the coastal strip only, is now applied as the official name of the whole country. 

 Form of the original citation in published works is maintained in the list. 



