NO. 1 TAYLOR: PACIFIC MARINE ALGAE 255 



diam., purplish red, thin walled; structurally the vesicles showing a sur- 

 face layer of small rounded-angular cells 6-9 /x diam., with under them a 

 layer of somewhat larger cells along the lines of contact of the large inner 

 cortical cells, which in a single layer bound the cavity, these cells largely 

 rounded, angular or with angular cells in the interstices, reaching 120- 

 240 /x diam. ; oval gland cells in loose groups of 8-14, situated on some of 

 the inner cortex cells. 



Eliding 1928, p. 52. 



These specimens were mostly very small, only that from I. Santa 

 Maria seeming nearly typical. In examining it no gland groups with over 

 14 cells were found, most being about 9. Eliding (loc. cit.J indicates that 

 in the typical plant the number ranges to 20. Since no other better distinc- 

 tions were found, this probably does not justify recognition of the Galapa- 

 gos plants as a new species. 



Mexico: Is. Revilla Gigedo, dredged from 41-84 meters' depth at 

 sta. 924 near I. Soccoro, no. 39-61 A, 18 Mar. 1939. Ibid., Nayarit, 

 dredged from 22 meters' depth at sta. 970 near I. Maria Magdalena, Las 

 Tres Marias, no. 39-663, 9 May 1939. Ecuador: Archipielago de 

 Colon, dredged from 13 meters' depth at sta. 182 near I. Eartolome, I. 

 San Salvador, no. 34-346, 24 Jan. 1934. Ibid., dredged from 45-55 meters' 

 depth off Gordon Rocks near I. Sta. Cruz, Schmitt no. 317D-34, 8 Dec. 

 1934. Ibid., dredged at 54 meters off Elack Eeach Anchorage, I. Santa 

 Maria, no. 34-391B, 30 Jan. 1934. Ibid., dredged from a rocky bottom 

 at 36-55 meters' depth near an islet in Gardner Eay, I. Espanola, no. 34- 

 418, 31 Jan. 1934. 



Ghampiaceae 



Plants usually bushy, branches cylindrical or compressed, delicately 

 membranous, or somewhat firm in the older portions; developing from 

 an apical meristem with a cortex of small cells without, large cells within, 

 and a cavity traversed by a few longitudinal medullary filaments which 

 bear lateral secretory cells; tetrahedral sporangia formed just below the 

 surface of the sporangial plants; spermatangia formed by the surface cells 

 of the male plants; carpogenic branches three or four celled, the auxiliary 

 secondarily derived from the same supporting cell as the carpogenic 

 branch ; carpospores discharged from a prominent ostiolate pericarp. 



KEY TO GENERA 



1. Plants not septate; bases of branches often contracted and closed 



Lomentaria 



1. Plants septate throughout Champia 



