COLLINS AND HOowE: SPECIES OF HALYMENIA 181 
multum majoribus, magis echinato-stellatis, cum processubus 
subspinescentibus saepe permultis. / 
Ad oras Insularum Bermudensium, in profundis (typo in herb. 
Hort. Reg. Kew., a Exped. “Challenger” lecto et “ Kallymenia 
reniformis’’ denominato). 
Frond membranous, gelatinous, 125-200 » thick (when soaked 
out), suborbicular in general outline, attaining width of 10-18 
cm., deeply, irregularly or subpalmately lobed or divided, the 
lobes irregularly obovate or suborbicular, mostly 2-6 cm. broad, 
tinous, translucent, submonostromatic, the superficial 
(protoplasts) ovoid, subglobose, or ellipsoid, 4-8 u in maximum 
diameter, widely spaced (separated 5-10 p), their longer axes 
horizontal or vertical, their outer walls (‘‘surface jelly”) 10-18 4 
thick; subcortex of 2-4 layers of closely anastomosing, ovoid, 
ellipsoid, or often flattened, thick-walled cells, the outer (proto- 
plasts) granular, 6-10 uw in diameter, the inner mostly 25-65 # in 
maximum diameter, some of the inner cells larger, subglobose, 
80-180 » in diameter, echinate-stelliform, projecting into the 
ther rigid 
medullary cavity and showing when detached 15~40 Ta 
subspinescent processes, these mostly 25-60 « long and 10-204 
in diameter at base; other parts unknown. 
Brermupa: Dredged in ‘31 fathoms, off Bermuda” by members 
of the Challenger Expedition in 1873, and reported as “ Kallymenia 
reniformis J. G. Agardh”’ (Rep. Voy. Challenger, Bot. 1: Bermudas 
II7. 1884). This is the only specimen known to the present 
writers. . 
Type: In the herbarium of the Royal Botanic Gardens, 
England. 
Halymenia echinophysa appears to fin veg 
H. actinophysa M. A. Howe,} from La Paz, Lower California, but 
differs in the smaller, thicker, more lobed, non-nitent thallus, 
with the surface jelly twice as thick, the surface cells twice as 
widely spaced, the medullary filaments one halt as stout, in the 
* Ridgway, loc. cit. pl. 38, 39- 
+ Bull. Torrey Club 38: 509. pl. 34. T9Il. 
Kew, 
d its nearest ally in 
