Herbarium of the British Museum. 35 



DiCTYOTACEJi. 

 Dictyota fasciolttj Lara. 



Harvey ! No. 57. Ferguson ! 



Geogr. distr. Mediterranean, West Indies. 



Dictyota dichotoma^ Lam. 

 Ferguson ! 

 Geogr. distr. Tliroughout all warm and temperate oceans. 



Dictyota crenulata^ J. Ag. 

 Ferguson ! 

 Geogr. distr. Pacific Ocean (coast of Mexico). 



Dictyota Kunthii, Ag:. 

 Ferguson ! 

 Geogr. distr. South Pacific. 



Dictyota acuminata, Kiitz. 



Ferguson ! 



Geogr. distr. Red Sea, Socotra {Balfour I), Bombay 

 ( Hobson !) . 



Taonia Schroederij J. Ag. 



Ferguson ! 



Geogr. distr. Atlantic (Brazil) and Gulf of Mexico. 



Padina pavonia, Gaill. 



Harvey ! No. 55. Ferguson ! 



Geogr. distr. Throughout all warm and temperate oceans. 



Halyseris delicatula^ Lam. 



Harvey ! No. 54. Ferguson ! 



Geogr. distr. Atlantic (Mexico, West Indies, Brazil). 



J. G. Agardh (Spec. Gen. et Ord. Alg. vol. i. p. 116) 

 notes that he possesses an aberrant form from Pernambuco, 

 but doubts its claims to be regarded as a distinct species. 

 The ' Challenger ' specimens from Fernando Noronha also 

 differ from the typical H. delicatula, and in some respects 

 only, not in all, agree with Agardh's. 



Halyseris polypodioides, Ag. 

 Ferguson ! 



Geogr. distr. Mediterranean, Atlantic, Southern Ocean 

 (Tasmania). 



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