220 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



PHAEOPHYGEAE 



Family Ectociirpiiceae 

 Genus EGTOCARPHS Lyngbye 

 Ectocarpus Mitchellae Harv. 



Harvey. 1852. p. 142, pi. 126; Saundci-s, 1898. pi. 21, figs. 1, 2; Setch. & 

 Card.. 1925, p. 428. 



The collections from the Gulf agree in all essential particulars with 

 this species as delineated by Saxindei-s. In the description by Setchell and 

 Gardner, the plants from the Pacific coast have not been separated satis- 

 factorily from those of the Atlantic coast (Taylor, 1937, p. 111). The 

 present specimens are 2-4 cm. high and vary from green to olivaceous 

 brown upon drying. Only plurilocular gametangia are present. 



D. 358, 363, growing on Sar(;assum, Punta Penasco, Feb.; D. 644, 

 growing on young Sar pass urn. Rnlfsid. etc.. in rock pools, middle littoral, 

 San Jose del Cabo, Feb.; H. 717. Santa ^Maria Bay (outer coast), Aug. 



Ectocarpus confervoides f. variabilis Saunders 



Saunders. 18^8. p. 155, pi. 23 ; Setch. 5: Gard.. 1925, p. 414. pi. 46. fig. 7 ; 

 Phyc. Bor. Amer., no. 1737. 

 D. 747, densely tufted, .5-1.0 cm. high, on disintegrating Sargassum 

 fronds, lower littoral, Turner's Island, July. 



Ectocarpus mucronatus Saunders 



Saunders, 1898, p. 152, pi. 19; Setch. & Gard., 1925, p. 429. 



The present collections have uniformly sessile, ovoid, short-acuminate 

 plurilocular gametangia and conform in all other essentials to Ectocarfiits 

 mucronatus as described and figured by Saunders. The type is from San 

 Pedro. California, and the Gulf collections extend the range into a new 

 area. 



D. 358a, plants .8-2.5 cm. high, attached to the bladders of Sargas- 

 sum. upper sublittoral, Punta Penasco, Feb. 



Ectocarpus Bryantii S. & G. 



Setch. & Gard., 1924, p. 720. pi. 17, fig. 45. 



According to Setchell and Gardner, Ectocarpus Bryantii and E. gono- 

 dioidcs are evidentiv closelv related and both have near affinities in the 



