NO. 1 TAYLOR: PACIFIC MARINE ALGAE 241 



Gymnogongrus melanothrix Grunow 



Piccone 1886, p. 60; 1889, p. 31 ; Farlow 1902, p. 96. 

 Reported from I. San Cristobal and I. Santa Maria, Archipielago 

 de Colon. 



Gymnogongrus vermicularis J. Agardh 



Piccone 1886, p. 61 ; Farlow 1902, p. 96. 



Reported from I. San Cristobal, Archipielago de Colon. 



STENOGRAMMA Harvey, 1841 



Stenogramma interrupta (C. Agardh) Montagne 

 Plants to about 5 cm tall, dull rose red, 5-6 times irregularly dichot- 

 omously divided, the segments very little tapered to the base, 2-7 mm 

 wide above the forks, the apices broadly rounded ; tetrasporangia forming 

 anticlinal rows in small scattered bifacial sori ; female plants producing 

 the procarps in an interrupted midriblike line which later involves the 

 carpospores. 



Kylin (1941, p. 26) recognizes the California material (such as Phyc. 

 Bor.-Amer. no. 380) as a species S. calif ornica established by Harvey 

 (1830-41, p. 408) and later by him reduced to synonymy (Harvey 1853, 

 p. 163, pi. 19, figs. C1-C4). This supposed independent species is described 

 as differing in having wider blades 10-20 mm in breadth, whereas the 

 European plant has them but 5-10 mm. The present material, though 

 apparently well developed, is well within the range of the earlier-described 

 species. 



Mexico: Is. Revilla Gigedo, dredged from 57 meters at sta. 2829, 

 Hassler Exped. no. 30 (tetrasporic, carposporic), 1 May 1888. Ecua- 

 dor: Archipielago de Colon, dredged from 27 meters off Post Office 

 Bay, I. Santa Maria, no. 34-281, 19 Jan. 1934. 



Gigartinaceae 



Plants plane or bushy, subsimple or branched, developing with an 

 axis of numerous filamentous initials, the medulla ultimately pseudo- 

 parenchymatous, the cortex somewhat obscurely filamentous, the small 

 outer cells in anticlinal rows ; sporangia in sori, developed from branching 

 rudiments, tetrapartite ; spermatangia formed in sori on the surface; 

 procarps present, the three-celled carpogenic branch carried on a support- 

 ing auxiliary which after fertilization forms slender, branching gonimo- 

 blast filaments which ramify into the medulla and produce a diffuse cysto- 

 carp without a definite pore. 



