204 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



are irregularly inflated and constricted in age, nearly smooth in younger 

 stages and in dredged specimens. 



The type specimen of Enteromorpha Marchantae (loc. cit.) is a plant 

 nearly identical with D. & R. 3279 from pools in a tidal flat, Playa Mira- 

 mar, Guaymas, December. Both consist of numerous, irregularly inflated 

 and constricted tubes averaging 4-5 mm. in diameter. Those of Mar- 

 chant's specimen are younger and shorter than Drouet's. 



D. 625, dredged in 34-50 meters over fine, gray sand ofif Gorda Point, 

 Lower California, Feb.; D. 150, dredged in 4-32 meters off Tiburon 

 Island, Jan. 



Enteromorpha prolifera (Muell.) J. Ag. 



J. Agardh, 1883, p. 129, pi. 4, figs. 103, 104; Setch. & Gard., 1924, p. 

 715. Enteromorpha tubulosa Setch. & Gard. (not of Kiitzing), 

 1924, p. 716. 

 The specimens placed here have the most slender, hairlike tubes of 

 the known Gulf species. 



Floating or on rocks in tidal water, D. & R. 3155, 3249, 3146, Guay- 

 mas, Dec; M. 4, Guaymas, May; J. 49, along beach at La Paz, April. 



Family Ghaetophoraceae 



Genus ENTOGLADIA Reinke 

 Entocladia condensata S. & G. 



Setch. & Gard., 1924, p. 718, pi. 12, figs. 4, 5. 



This species was detected by Setchell and Gardner on various species 

 of Codium in the Johnston collection. It has again been found in the 

 terminal membrane of Codium simulans, D. 439, San Esteban Island, 

 February, and in Codium MacDougalii, MacDougal, Port Libertad, 

 May, 1923. 



According to Setchell and Gardner, Entocladia condensata is similar 

 to E. codicola growing on the utricles of Codium fragile on the coast of 

 California, but the cells are much larger throughout and the whole plant 

 is more condensed. It is apparently quite widely distributed in a number 

 of different species of Codium in the Gulf. 



As to the members of the genus as a whole as they occur in the Gulf, 

 Setchell and Gardner say: "We have represented in the three species ap- 

 parently the extremes of variation in the matter of the formation of the 

 thallus. In Entocladia condensata the whole plant is practically a solid 



