48 THE VOYAGE OF H.M.S. CHALLENGER. 



Chordariace^e. 



Chordaria sordida, Bory. 



Chordaria sordida, Bory in Duperr. Voy. "Coquille," Bot. Crypt., p. 139; J. G. Agardh, Sp. Alg, 

 i. p. 67. 



Ascension. Durville. 



An obscure species not identified by writers subsequent to Bory. 



RHODOSPERMEA 



Rhodomelace^;. 

 Acanthophora muscoides, Bory. 



Acanthophora muscoides, Bory in Duperr. Voy. "Coquille," Bot. Crypt., p. 156; J. G. Agardh, Sp. 



Alg., ii. p. 816. 

 Acanthophora delilei, Harv., Nereis Bor.-Am., ii. p. 18. 

 Acanthophora militaris, Lamour., Ess., p. 44, t. 10, figg. 4 et 5. 

 Fucus muscoides, Linn., Sp. PI., ed. 1, p. 1161. 



Ascension. Osbeck; Durville. 



Florida ; West Indies ; South Africa. 



We have seen no Ascension specimens ; yet the species was founded upon those 

 collected there by Osbeck. 



Ceramiace^e. 

 Boryna compacta, Bory. 



Boryna compacta, Bory in Duperr. Voy. " Coquille," Bot. Crypt., p. 221. 



Ascension. Durville. 



An obscure plant, of which the above is the only record we have fouud. Bory states 

 that it was intermixed with Acanthophora muscoides. 



