194 THE JOURNAL OF BOTANY 
The surface is smooth, and in some parts the cortex has been 
eroded, but in others it is quite uninjured. In transverse — 
ne interior of the thallus is seen to be composed of fair Soa 
gular cells, rotundato-angulate or elongated more or ee 
oe edie arly to the surface, spaced out and embedded in a hy Ane 
cartilaginous matrix. All the cells are lined with a granular proto- 
plasm, and here and there show distinct thin strands of protoplasm 
from cell to cell. This broad interior tissue forms the greater part 
of the thallus, and is bordered on either side by a thin ote of much 
smaller round cells, closer together and abutting on the cortex 
The cortex is composed of a row of long, narrow, itacaly packed 
vertical cells. There is no medullary stratum of filam 
we have examined erable microscopic preparations of various 
genera without finding any structure resembling that plant 
The total absence of a filamento ulla prevents ing 
placed in ia or EFuhymenia, which otherwise it somewhat 
resemb] uch puzzled by Reinsch’s Kallymenia 
is f. a (Meeresalgenfi. v. Siid Georgien, p. 394), the 
packed with starchy contents. He gives no figure, and his descrip- 
tion is te0 incomplete to enable us to decide whether, or how far, 
his plant approaches ours. He states that his plant has a very 
different structure from typical K. reniformis, except for its cortex. 
Our plant differs from K. reniformis in having its cortical cells 
vertically elongate, and not rotundate; and its interior cells often 
elongate perpendicularly, and not parallel to the surface of the 
frond. Though unable to indicate the genus to which this ‘ Scotia’ 
specimen belongs, we record our observations in the hope that fertile 
material gathered by one of the other Antarctic Expeditions may 
give the clue to its identity. 
3. Cattopuynis variecata Kiitz.? Scotia Bay, South Orkneys, 
July, rity 3. 
Geogr. Distr. §.K. Pacific, New Guinea, Kerguelen, Auckland 
felisda, aad ae of Magellan. 
This is ile ~~ incomplete plant, and consequently = are 
~_ be deteriin it with certainty. Its structure, as see a 
rs n older part of the frond, much seneebled 
that of Caliph ES The thallus is com posed of two strata, 
is ‘iscnculiaeliase, es the ‘ntaehee has a fibrous appearance, owing 
to the collapse of the coll As to the habit of the plant, the base 
is absent, of thallus which we its a re or 
texture, and coccineo-rosaceous in colour. The s sida & is cm. 
high and 9 em, wide, ¢ i 
