398 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



PLATE 50 



Fig. 1. Laurencia Hancockii, portion of an upper branch of the 

 type, D. 543a, x 11. 



Fig. 2. Polysiphonia Hancockii, a single, branched, lateral ramulus 

 of the type, D. 629c, x 108. 



Fig. 3. Callithamnion veleroae, habit of a portion of the type, D. 

 381f, x45. 



Fig. 4. Callithamnion veleroae, portion of an antheridial frond, x 

 100. 



Fig. 5. Callithamnion 'veleroae, portion of a cystocarpic frond, x 125. 



