200 
Endoderma, Lagerh., 1883. 
p. (jadinianum, Huber ?). Growing between the lamellae 
of the membrane of a Cladophora, attached to the stone-work of 
the fountain in the pond, August, 1902. It seems possible that 
this is merely a stage in the development of a Stigeoclonium. 
Young plants of this genus with a creeping basal portion, whose 
large cells very much resembled those of the Endode a, were 
common in the same locality, and belonged to Stig. nanum 
(Dillw.), Ktz. (cp. Fritsch in Beihefte. z. Bot. Centralbl. Vol. 
XIII., 380-383. Pl. XII.) 
Draparnaldia, Ag., 1824. 
D. plumosa, (Vauch.), Ag. Syst. 58. Laboratory tank, May, 
1902. "This species appeared soon after the tank had been cleaned 
ont, and was present in great abundance at that end at which the 
Chaetophora, Schrank, 1189. 
C. endiviaefolia, Ag. Syst., 28. Growing under water on the 
brickwork of the laboratory tank, February, 1902. The tank was 
cleaned out soon after this species appeared, and I did not find it 
again afterwards. 
Stigeoclonium, Kvitz., 1843. 
S. farctum, Berth., var. simplex, Fritsch Beihefte Bot. Centralbl. 
Vol. XIIL, 376, Pl. X1. i f 
: his species forms a kind of basal disc, composed of 
creeping connate branches. The vertical filaments are unbranched. 
S. tenue, Ag. Syst., 57. Attached to the sides of a tank in the 
Herb. Dptmt., February, 1902 ; pond, March, 1902 (zoospores=10p 
diameter at first, when spherical ; afterwards when elongated = 
pu xX 6,5 yp 
S. nanum, (Dillw.), Ktz, Spec. Alg., 352. Pond, May, 1902. 
S. fastigiatum (Ralfs), Kitz. Tab. Phyc., iii., £. 8, f. 1. Attached 
to filamentous Algae in lake, January, 1909. 
8. variabile, Nág. in Ktz. Spec, 352, n. 3. Victoria Regia 
tank, May-September, 1902. Not before found in this country, 
3. CHROOLEPIDACEAR. 
Chroolepus, Ag., 1824. 
, C. aureus (Linn.), Kütz. Tab. Phyc., iv., t. 93. Forming a thin, 
silky, orange-coloured stratum on the woodwork of one of the 
pits, attached to the tropical fern house (No. 2). The filaments 
abounded in sporangia, September, 1902. ' 
