262 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 17 



cruciate, scattered through the unmodified cortex, about 16 /a in dia- 

 meter in surface view; cystocarps abundant, scattered over upper parts 

 of blades, 150-200 ^i in diameter, bulging prominently on both sides but 

 more so on the side bearing the ostiole; carpospores 9-11 yu. in diameter, 

 mutually compressed into a compact, ±: globular mass which is pedicel- 

 late on the old auxiliary cell ; antheridia not seen. 



Type: Holotype is a single cystocarpic plant collected by J. T. 

 Howell, 739, August 12, 1932, on sheet 236489 in the Herbarium of 

 the California Academy of Sciences, San Francisco, California. 



Type locality: Dredged from 30 m., Bahia de Santa Maria, 

 Isla Magdalena, Baja California, Mexico. 



Mexican distribution: Sonora — D. 369-40, dredged in 22 m., 

 Bahia Tepoca, Feb. Baja Calif, del Sur — D. 6841, dredged in 19 m., 

 Bahia de San Lucas, Mar. Arch, de Revillagigedo — Taylor 39-67, 

 dredged in 41-84 m., near Isla Socorro, Mar. 



The minor differences pointed out by Taylor between his Kally- 

 menia tenuifoUa and the figures of Callymenia angustata given by Daw- 

 son ( 1944) have been reviewed and found to be insignificant. 



Setchell and Gardner described the cystocarps in the type as with- 

 out an ostiole. Reexamination of the type shows that the ostiole develops 

 from the inside and until the cystocarp is fully mature is obscured from 

 external view by a single layer of surface cells. Longisections of cysto- 

 carps readily show it prior to the final breakdown of the surface layer. 



The specimen from southern California attributed to this species by 

 Dawson (1945a) is sterile and is larger and thicker (to 120 /a) than 

 the Mexican ones, but seems otherwise to agree with them. 



Gryptonemia veleroae (Dawson) comb, no v. 



Callymenia veleroae Dawson 1944, p. 285, pi. 45, fig. 1. 



Thalli to 4 cm. high, membranous, rose red in color, consisting of 

 several erect blades arising as branches from a primary axis immediately 

 above a small discoid holdfast ; blades in youth entire, simple, obovate to 

 oblanceolate, cuneate to a short, narrow, flattened stipe, the leading 

 margin rounded but early becoming split and developing further into 

 much lacerated divisions, the broadest non-lacerated lower parts of 

 blades up to 8 mm. wide, the spread of lacerated upper parts to 1.5 cm.; 

 thickness 80-90 fx ; transection showing a single pigmented outer cortical 

 layer of small, angular cells 5-7 /x in greatest diameter, a subcortex of 1-2 

 layers of periclinally elongated elliptical cells 10-20 fx in length, and a 

 rather narrow medulla of interlaced filaments of cells 5-6 p. in diameter 



