121 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 9 



Fig. 1-2. Callithamnion catalinense sp. nov., from the type collection. Fig. I, 

 Upper part of a tetrasporangial plant, X 33; Fig. 2, Detail of tetras- 

 porangial branch, X 211. 



Fig. 3. Callithamnion compactum sp. nov. Upper portion of the tetrasporan- 

 gial type, X 123. 



Fig. 4. Callithamnion bisporum var. australe var. nov. Upper part of the 

 tetrasporangial type, X 54. 



Fig. 5-6. Callithamnion paschale Berg. Upper portions of spermatangial and 

 cystocarpic plants. X 100 and 125, respectively. 



