78 MR. H. N. RIDLEY ON THE 



Haltseris Justii, Lamx. 

 IRidley, Lea, and Hamage ! 

 Geogr. Distr. West Indies. 



H. DELICATULA, LttOUX. 



' Challenger '! Ridley, Lea, and Bamage. 



Geogr. Distr. Atlantic (America from Mexico to Brazil). 



H. PLAGIOGRAMMA, Moilt. 



' Cliallenger ' ! 



Geogr. Distr. Atlantic (America from West Indies to Brazil) 

 and Pacific (Sandwich Islands). 

 Sargassum vulgare, Ag. 

 ' Challenger '! Ridley, Lea, and Ramage ! 

 Geogr. Distr. Tropical and South subtropical Atlantic. 



CHLOROPHTCEiE. 



Brtopsis pennata, Lamx. 

 Ridley, Lea, and Ramage ! 

 Geogr. Distr. West Indies (Indian Ocean?). 



CODIUM TOMENTOSUM, Ag. 



Ridley, Lea, and Ramage ! 



Geogr. Distr. Throughout tropical and temperate seas. 



Halimeda opuntia, Lamx. 



' Challenger.' 



Geogr. Distr. Throughout troj^ical seas. 



Valonia filiformis, DicJcie. 

 Ridley, Lea, and Ramage ! 

 Geogr. Distr. Mauritius. 



V. VENTRICOSA, J. Ag. 



Ridley, Lea, and Ramage ! 



Geogr. Distr. West Indies. 



Webster, in ' Voyage to the Southern Ocean in H.M.S. ' Chan- 

 ticleer,' ' vol. ii. p. 337, gives a description of " clusters of vesicles " 

 which he cannot determine as animal or vegetable. The de- 

 scription obviously applies to Yalonia ventricosa, even to minute 

 details. He describes only one other seaweed from Fernando 

 Noronha. It had " the aspect of a land plant, leaves linear, 

 pinnate, an inch in length, and of a very bright green." This 

 would apply to either a Caulerpa or a Bryopsis. 



CnAMiEDORIS ATJKULATA, Mont. 



Ridley, Lea, and Ramage \ 



Geogr. Distr. Tropical Atlantic and Indian Ocean. 



