431 
area of several square metres. But it may also be met with on 
sheltered coasts; having been found, e. g. at the head of Kalbakfjord 
growing on stones in shallow water; according to Kj ell man’s 
report (1. c.), in the Norwegian Polar Sea it grows by preference in 
sheltered situations. 
Specimens bearing plurilocular sporangia were met with in 
May and July. 
This species, which is doubtless widely distributed, has been found 
at the following places: —Vid.: rock on the north side of the island (!); 
Str.: Kalbakfjord (!), common in rock-pools between Hojvig and Thors- 
havn (!), Thorshavn (Simmons,!), Myggenses (!); Sando: Sandsbugt (!); 
Syd.: Kvalbo (Lyngbye, !), Vaags Ejde (!). 
The present species was already found by Lyngbye and there is 
a specimen of it in his herbarium in Copenhagen named Zonaria deustci. 
It was gathered by Lyngbye »ad saxa maritima littus Qualboe« on July 
15th 1817. It has unilocular sporangia. In Hydrophyt. (1. c. p. 19) 
Lyngbye mentions Zonaria deusta , but does not report it from the 
Faeroes. 
On a stone near Glibre in Skaalefjord Helgi Jonsson gathered 
a Ralfsia , which appears to come very near the one mentioned 
by Kuckuck in »Bemerkungen«, I, p. 241. The specimens in 
questions — two in number — had a smooth, shiny, yellowish- 
brown, marginal area, and a darker, more rough central area, in 
which dark, radiating stripes could distinctly be traced. Even 
when microscopically examined it closely resembled Kuckuck’s 
plant; the margin of the thallus in the Fseroese examples being 
decidedly arched just as described and figured by Kuckuck, 
though the cuticula was somewhat thinner in the Fseroese spe¬ 
cimens. With reference to the arched margin Kuckuck (1. c. p. 242) 
writes: — »Jedocli scheint es gestattet, die starke Wolbung mit 
einer Neigung zum bilateral-symmetrischen Bau der Ralfsia deusta 
in Zusammenhang zu bringen«. It was consequently interesting 
that the thallus in the Fseroese examples now and then showed 
signs of being bilateral, small portions occurring, here and there, 
in which downward-turned filaments as well could distinctly be 
observed, in contradistinction to the majority of the filaments 
which turn upwards as in Kuckuck’s fig. 6, though these down¬ 
ward filaments were far from being as distinct as those in the 
specimen described and figured by Batters in »Marine Algae of 
Berwick-on-Tweed«, p. 66 (286), tab. X, fig. 8. I did not come across 
any hairs. Here and there, where the thallus were not closely pres¬ 
sed against the stone there occurred numerous, strongly interlaced 
