490 PROCEEDINGS OF SECTION D, 
Fructification as yet unknown. The older fronds often marked 
with scattered stains. Frond bright red, without any indication 
of ribs. Cortical stratum comprises 3 to 4 series of cells, the inner- 
most the larger, occasionally somewhat elongated vertically, very 
many globose, the cortical cells conspicuously smaller than the 
others. 
Stenogramma leptophyllum.— Fronds arranged in a_hemi- 
spherical group, mostly very narrow, linear, apparently arranged 
dichotomously, the older segments alternating on the rachis, 
sub-pinnate, as it were primary and exceeding the rest. Apices 
obtuse, very slightly narrowed. Antheridia in blotches in longi- 
tudinal series along the middle of the frond. In colour and 
substance resembling Stexogramma interruptum. 
florea wilsonis.—Frond flat, distichously decompound, pinnate, 
the larger pinne compound and intermixed with minute pinnules 
proceeding from the margin. Pinnze somewhat erect, sub-obtuse, 
pinnules very spreading, subulate and delta-shaped. Cystocarps 
almost intramarginal, topped with a very short crown of 
spines. 
Rhodymenia stenoglossa. — Stems from a_ radical plexus, 
numerous, somewhat erect, filiform at the base, soon becoming 
flat with a slight groove, passing into a flat, very narrow, linear 
frond. Young frond simple, or sparingly dichotomous, segments 
slightly attenuated at the base. The older frond beset with 
marginal processes, by degrees growing out into lingulate pinne, 
subfiliform at the base. 
Fructification as yet unknown. 
Glaphyrymenia pustulosa.—Plant about a foot in diameter, 
sometimes also with laciniz of equal dimensions. Stem some- 
times hardly perceptible, almost sessile, sometimes more con- 
spicuous, rounded below, soon flattened into a wedge shape, and 
then widened into a flat membranous expansion, somewhat 
thicker near the base and thinner above. Membranous expan- 
sion widely expanded, sometimes rounded oblong with a con- 
tinuous margin, or at times more or less divided into very large 
lobes, with the margin either even or folded. Surface smooth, or 
at length pustulate, more or less perforated by scattered foramina. 
Margins of the foramina and laciniz often recurved, bearing 
cystocarps within the margins. Colour and habit resembling 
those of Kallymenia reniformis. Adheres very closely to 
paper. 
(Nore.—In the living state this alga is peculiarly soft, velvety, 
and clinging, quite unlike in consistence any other I have 
handled.—J. B. W.) 
Delesseria heterocystidea.—Frond with cortex ribbed, prolifica- 
tions appearing from the midrib, generally in a single row, rarely 
branched, folioles somewhat erect, very slender, lanceolate, 
