I9I3. 
Cotton.— Marmc Al^ac of SaUccs. 
197 
found on Clare Island or The 
Bills. This alga is capable of 
absorbing large quantities of 
ammonia, and occasionally 
occurs on the filter beds in 
sewage farms, where it attains 
an equally large size. Under 
these conditions, however, it is 
supplied with abundant mois- 
ture, growing at times directly 
under the sprinklers. The 
Saltees material showed every 
transition from the filamentous 
form to the broad leafy thallus. 
Enteromorpha clathrata /. Ag. 
compressa Grev. 
Linza /. Ag. 
In 
Enteromorpha 
intestinalis Link. 
Ulva Latuca L. 
Endoderma Wittrockii Wille. 
Ectocarpus fasciculatus. 
Chaetomorpha aerea Kiltz. 
Cladophora Hutchinsiae Haw. 
rupestris Kiitz. 
sericea Kiitz. 
albida Kiitz. 
var. refracta Kiitz. 
arcta Kiitz. 
lanosa Kiitz. 
Ostreobium Quekettii Born, et Flah. 
— In Spirorbis on Phyllo- 
phora rubens. 
Codium tomentosum Stackh. 
Phoeophyceae. 
Desmarestia viridis Lamour. 
aculeata Lamour. 
ligulata Lamour. 
Dictyosiphon foeniculaceus Grev. 
Litosiphon pusillum Harv. 
Laminariae Harv. 
Phloeospora brachiata Born. 
Scytosiphon lomentarius /. Ag 
Asperococcus fistulosus Hook. 
Ectocarpus simplex Cm. — In Codium 
tomentosum. 
siliculosus Kiitz. 
fasciculatus Harv. 
tomentosus Lyngb. 
granulosus Ag. 
Pylaiella litoralis Kj^llm. 
Isthmoplea sphaerophora Kjellm. 
Myriotrichia clavaeformis Harv. 
Elachista fucicola Fries. 
Sphacelaria cirrhosa Ag. 
Cladostephus spongiosus Ag. 
verticillatus Ag. 
Myrionema strangulans Grev. 
Hecatonema reptans Kylin. — 
Second record for Ireland. 
Microspongium globosum Reinke. — 
Second record for Ireland. 
Chordaria flagelliformis Ag. 
Leathesia tuberiformis Aresch. 
Laminaria saccharina Lamour. 
digitata Lamour. 
Cloustoni Edm. 
Alaria esculenta Grev. 
Fucus spiralis L. 
vesiculosus L. 
serratus L. 
Ascophyllum nodosum Le JoL — The 
marine fungus Mycosphaerella 
Ascophylli, Cotton, was present 
in all the receptacles of Asco- 
phyllum forwarded. It doubt- 
less occurs around the whole 
Irish coast, but has only been 
recorded from the Clare Island 
district. 
Pelvetia canaliculata Dccne. et Thur. 
Himanthalia lorea Lyngb. 
Halidrys siliquosa Lyngb. 
Cystoseira granulata Ag. 
Dicytota dichotoma Lamour. 
Florideae. 
Concliocelis rosea Batt. — In Spir- Porphj^a umbilicalis Kiitz. 
orbis on Phyllophora rubens. 
