NO. 10 DAWSON : MARINE ALGAE, GULF OF CALIFORNIA 285 



Family Gallymeniaceae 



Genus GALLYMENIA J. Agardh 



Gallymenia angustata S. & G. 



Plate 68, Fig. 1 



Setch. & Gard., 1937, p. 77, pi. 3, fig. 6b, pi. 12, fig. 32. 



Fronds up to 7 cm. high, many blades arising from a discoid holdfast ; 

 blades membranaceous and flaccid, linear-lanceolate, entire or deeply di- 

 vided, with a cuneate base and a very narrow stipe, 1-2 cm. wide, 50-60 /* 

 thick; medulla composed of loose, relatively sparse fibers irregular in 

 diameter; cortex composed of a single layer of nearly isodiametric angular 

 cells 5-8 fx diam., and a layer of moi-e or less ellipsoidal cells slightly larger 

 than the surface cells; cystocarps abundant, scattered over surface of 

 fronds, protruding slightly on one side and prominently on the other, 

 with an ostiole; tetrasporangia scattered over the frond in the cortex, 

 cruciately divided ; antheridia unknown. 



The present more ample material allows us to add to the original de- 

 scription of this plant and to extend its range from the southern, outer 

 coast of Lower California (Santa Maria Bay) to the Gulf: D. 369, 

 dredged in 22 m., Tepoca Bay, February. This plant is apparently of 

 rather deep sublittoral habitat, the type having been dredged in 32 meters. 



The cystocarps, tetraspores, and cross-sectional appearance of the 

 frond correspond to Kylin's recent comments on the genus Callymenia 

 (1937, p. 165, p.222, fig. 177B). 



Callymenia veleroae sp. nov. 

 Plate 45, Fig. 1 



Frondes usque ad 4 cm. altae, membranaceae, e disco basali abrupte laminae 

 paucae erectae orientes integres, longi ellipticae basi latae-cuneatae, inferne ad 

 stipites angustiores attenuatae, mox laciniatae et in segmentis lateralibus trans- 

 formatae, 80-90 ]i crassae; medullis filis intertextis compositis. 



Plants to 4 cm. high, flat, membranaceous from a small disk-holdfast, 

 giving rise abruptly to several erect blades; blades at first (young) entire, 

 long-elliptical with a broadly cuneate base narrowing to a very slender 

 stipe-region, early becoming split and developing further into variously 

 and much lacerated segments, the broadest nonlacerated lower parts of 

 blades up to 8 mm. across, spread of upper parts up to 1.5 cm.; frond in 

 longitudinal section 80-90 fx thick, showing an outer single-layered cor- 

 tex of small isodiametrical cells 5-7 ju, diam., merging imperceptibly into 

 a subcortex of irregularly arranged larger cells 10-18 /a diam. in one or 



