WEST INDIAN FRESHWATER ALGE 283 
stands nearest to H. irr er Pa ag ers Videnskab. 
Forhandl. 1880, no. 11, p. 63, f. 41, 42), but differs in its 
smaller size, in the form of its sg and in the unbranched and 
more regular habit 
4, Uronema conrervicotum Lagerh. in Malpighia, 1887, p. 518, 
t. xii. f. 1-10. Crass. fil. 5-5°5 p.  Barbados.—Graeme Hall 
. Endoderma Pithophore, sp. n. LK. epiphytica;- filis 
breville atti gga subramosis, ramis subconcretis et attenuatis ; 
cellulis magnis, subglobosis, ellipsoideis, ovoideis vel paper 
chromatophoris singulis parietalibus, cum pyrenoide singulo; 
brana cellularum crassa. Long. she etre ad 210 p; ene l ae sll 
25-38 »; diam. cell. apic. ram. 5-16 »; crass. membr. cell, 
3-3°8 p 
Barbados —Bay Estate ; epiphytic on Pithophora Cleveana Wittr. 
The thallus is small, epiphyti ic, and almost invariably situated 
in the vicinity of one of the intercalary aie of the Pithophora. 
Not the a trace of an endophytic habit was observed in any 
of the speci The cells are much more tego than is usual 
in this gettin; hed the ae walls are remarkably thi 
Endoderma Pithophore may almost be re erie as a spec cies of 
Epicladia pee except for the xbsenca of all tendency to form an 
os thallus 
. E. polymorpha, sp.n. (Fig. 19.) EH. epiphytica; filis 
yl invegulaiter sibramons et anastomosis ; cellulis de- 
pressis, polymo rphi ler elongatis et multe ia cry kur ‘ 
e 
dicuintonioria. a Baha membrana cellularum firma et tenui. 
Long. thall. usque ad re pw; long. cell. 15-89 p»; lat. aL 
6: . . 
arbados.—Bay Estate ; poe on Pithophora Cleveana Wittr. 
_ This epiphyte is remarkable by reason of the polymorphic char- 
acter of the cells. The branching is very irregular and somewhat 
ep 
against the wall of the host. Each cell contains a parietal chloro- 
plast with one pyrenoid (sometimes more ?), and the cell-walls are 
firm alt a 
It is mewhat strange that two very distinct species of Endo- 
derma dueuia xist on the same plants of Pithophora ; E. Pithophore 
being situated upon and near the- comet whereas EF. polymorpha 
was clothing the vegetative ‘ells only. 
7. RuizocLonium HIEROGLYPHICcUM Kiitz.; em. Stockm. Crass. 
fil. eis p.  Trinidad.—In fountains, Roy. Botan. Gardens, 
| isaac (Kutz.) Stockm. Crass. fil. 23-29»; cell. 
Mametes a Ro plo longioribus. Barbados.—In freshwater tank, 
near Ha Kast 
. R. crassipennitum W. & G. 8. West in Journ. Bot. Febr. 
iso7, p. 85. 
Var. Ropustum var. n. Var. filiscrassioribus ; cellulis diametro 
vu 2 
