THE MARINE ALG OF THE SHETLANDS 808 
Ulvelia fucicola Rosenv.—On Fucus inflatus. Ler ee 
omorpha Linza J. Ag. (Ulva Linza E. intestinalis 
Link (Enteromorpha vulyaris K.) doubtless includes ies varieties 
and species, e.g. EF. clathrata ; but as his description does not make 
ood quite clear, in the present list I have recorded EZ. intestinalis 
Olea Lactuea (E..\. 
Ulothrix flacca Thur. (Lyngbya Carmichaelii E.). 
Endoderma Wittrockii (Wille) Lagerh.—Found growing in the 
cell-wall of Elachista fucicola. Burra Voe 
ata mirabilis Aresch.—Muckle Holm 
0? ee area Kiitz. (Conferva erea E. ).—C. tortuosa Kitz. 
(Cone tortio : 
deocloiésion > ripariwn ate ) Harv. (Conferva implexa E.). 
Pa aophora rupestris (Li.) Kitz. (Conferva rupestris E.)\.—C. Hut- 
chinsi@ Harv. ? (Conferva “ifusa B 
pongomorpha, sp. (Conferva uncialis and C. lanosa EB. ). 
Acrosiphonia sp. dango ar vt and C, centralis E.). 
Bryopsis plumosa eas ) Ag. (E.). 
Derbesia marina (Lyngb.) Kjellm>—The specimens have almost 
ripe sporangia. With lrwiael to their size and form, and how far 
they, on the whole, agree with the ce ae and Sisask plants, I 
must refer to my — in my paper on the Feroése alge. Mr. 
Batters has kindly sent me a specimen fou England (Swanage) of 
what he calls Derbesia tenuissima Crouan. The in glish specimens 
pe bearing fully ripe sporangia, appear to be very like my Shetland 
Fervése specimens. As in the two. latter, so also here, there 
usaally occurs one short ears in the stalk of each sporangiu 
and its form is just like that of a a only a little longer, vie. 
long. = about 200 »; lat. = about 100 ». Found at a depth of 
about six fathoms, euiphyee on the stem of Laminaria hyperborea, 
where it occurred as a short cushion about 3 in. high. Lerwick. 
PH#OPHYCES. 
get or viridis (Miull.) Lam. (Dichloria viridis E.).—D. acu- 
leata (Li.) Lamour. (E.).—D. ligulata (Lightf.) Lamour. (E.). 
Dissgoakphon feniculaceus (Huds.) Grey. (E.) 
Phyjllitis fascia (Mill.) Kiitz. ( Kua fascia E.). 
Scytosiphon lomentarius (Lyngb.) J ani Cherie Lomentaria E.). 
Asperococcus Hcg re ss Ee = 4. echinatus Grev. cfr. 
Griff.) Harv. On Rho re palma an Burra aa tomentosus 
Huds.) Lyng’ .).—E., littoralis (L.) Lyngb. 
Isthmoplea te (Harv.) Kjellm. (#ctocarpus spherophorus 
* Mauliocwhis la H 
_Elachista fucicola. Wall.) pics Sg (E.).—E. scutulata (Smith) 
Bf eee ee" Kiitz. Sterile, but 
