ATLANTIC ALG& OF THE ‘SCOTIA’ 109 
filaments of our endophyte, and we hesitate, crmgie to give any 
definite opinion on it. Since, however, the alge from South Orkneys 
are few and in teresting, it is — while recording it, as it: — occur 
among other antarctic collectio 
yilop ica : 
in laminam membranaceam liguiatam. seepius opin sina 
ginalibus pedicellatis; tetrasporangia igno 
Hab, Coulman Island, off Cape Wadsworth, British Antarctic 
Expedition 
Sm lamina Be about 1 cm. wide, and may attain a length of 
his species was not found by Mr. Rudmose Brown. It 
will be treated of more fully among the ‘ Discovery’ alge. 
DESCRIPTION OF PratEe 470. 
weiter spo pan @folium, n.sp. — Fig. 1. Portion : plant, nat. size. 
2. Caudate basal cells, 7“ in surface view, x mage 8. , seen oe ongi- 
tudinal pose 150. 4, Upper part of thallus, panies sectio 5 
. Ditto, surface view. a, ‘showi wing cells in twos and toes shortly after dean: : 
and b, when they are more evenly distributed, x 
Lessonia Mer nt sp.—Fig. 6. Taligiiaeae section of lamina, showing 
central strand of hyph#, with one “‘ trumpet-hypha”’ in longitudinal, gone in 
sverse view. 
Pteridium proliferum, n.sp.—Fig. 7. Branch showing proliferations from 
margin ri midrib, nat. size. 8. Petraapoees branchlet with growing points, 
and showing, oe cortex, but interior tissue, x 30. 8a. Apex of lobe, oa 
view, X 150. 9. Tetrasporangia, surface view, showing their a al posi 
Leptosarca simplex, n. gen. et sp.—Fig. 10, Plant with eroded apex, na’ 
11. Transverse section of thallus. a, taken from margin, showing thick- waited 
cells; b, taken from middle Ay frond, where the cells have much thinner walls. 
In Db be seen filaments of Entonema creeping over the cell-walls, x 150. 
ATLANTIC ALGH OF THE ‘SCOTIA.’ 
By A. ano E. 8S. Geppe. 
Tue following alge were collected by the epatoast Antarctic 
Expedition in tropical. and subtropical waters off the coast of Brazil, 
at St. Paul Rocks and St. Vincent, Cape de Verde. 
1. Ulva Lactuca L. St. — Station 24, Dec. 1, 1902. 
Geogr. Distr. Cosmopolitan 
' 2. Chetomorpha sp. - A fragm sala: Between Rio and Bahia, off 
the coast of Brazil, * Station § 81, Dec. 20, 1902. Lat. 18° 24’ §. 
Long. 37° 58’ W.” 
- 3. Microdictyon umbilicatum Zan. Off Brazil, same locality as 
On 2. 
Geogr. Distr. Mediterranean, Warm Atlantic, Warm Pacific, 
Indian Ocean, Red Sea. 
