NO. 1 TAYLOR: PACIFIC MARINE ALGAE 77 



walls, the antheridia cylindrical, the oogonia oval to subspherical ; zoo- 

 sporangia teiTninal on the branches, segregated by crosswalls, the zoo- 

 spores single, large, with flagella all over the surface. 



If studies of brackish habitats had been more assiduously prosecuted, 

 this genus would have been more abundantly represented and probably 

 by fertile material, in the absence of which identification to species is 

 impossible. 



Mexico: Baja California, intertldal on rocks at Point Hughes, Cabo 

 San Lazaro, no. 34-592, 7 Mar. 1934. Ecuador: Archipielago de 

 Colon, on Rhizophora roots along the open beach, Pta. Albemarle, I. 

 Isabela, no. 34-115, 12 Jan. 1934. Guayas, on the rocky southeast side 

 of Pta. Santa Elena, Salinas, no. 34-467, 8 Feb. 1934. 



