198 
The Irish Naturalist. 
October, 
Chantransia virgatula Thiir. 
Ch} locladiae {Bait.) Adams. — The 
second record for Ireland. The 
plant, which was added to the 
Irish list during the Lanibay 
survey, was not found on Clare 
Island, though repeatedly 
searched for. 
Choreocolax polysiphoniae Reinsch. 
Gelidium corneum Laniour. 
Chondrus crispus Stackh. 
Gigartina mamillosa /. Ag. 
Phyllophora rubens Grcv. 
Ahnfeltia plicata Fr. 
Sterrocolax decipiens Schm. 
Callophyllis laciniata Kutz. 
Callocolax neglectus Schm. 
Cystoclonium purpurascens Kutz. 
Calliblepharbis jubata Kutz. 
Rhodymenia palmata Grev. 
Lomentaria articulata J. Ag. 
clavellosa Gaill. 
Chylocladia kaliformis Hook. 
ovalis Hook. 
Plocamium coccineum Lyngb. 
Nitophyllum punctatum Grcv. 
laceratum Grcv. 
Delesseria sinuosa Lamour. 
sanguinea Lamour. 
alata Lamour. 
ruscifolia Lamour. 
hypoglossum Lamour. 
Rhodomela subfusca Ag. 
Laurencia obtusa Lamour. 
hybrida Lenorm. 
Polysiphonia urceolata Grcv. 
viola cea Grev. 
fastigiata Grev. 
atro-rubescens Grev. 
Brodiaei Grcv. 
warded. The plant was fully 
as stout as P. pennata (which 
is known as far north as Nor- 
mandy) but differed in habit, 
the outhne of the fronds re- 
sembling more closely those of 
P. parasitica. In microscopic 
structure it agrees well with 
that species. I submitted the 
specimen to Mr. E. M. Holmes, 
who agrees that unless further 
distinctions are forthcoming one 
cannot do otherwise than regard 
it as an exceptionally strong 
form of P. parasitica. 
thuyoides Schmitz. 
Brongniartella byssoides Bory. 
Heterosiphonia coccinea Falk. 
Spermothamnion Turneri Aresch. 
Grifhthsia setacea Ag. 
Monospora pedicellata Sol. 
Rhodochorton Rothii Naeg. 
Callithamnion Hookeri Ag. 
tetragonum Ag. 
Plumaria elegans Schm. 
Ceramium strictum Harv. 
diaphanum Roth. 
Boergesenii Petersen. 
rubrum Ag. 
ciliatum Ducluz. 
Gloiosiphonia capillaris Carm. — 
Rather rare on Clare Island, and 
only noted during July, 1909. 
Dumontia filiformis Grev. 
Dilsea edulis Stackh. 
Furcellaria fastigiata Lamour. 
Hildenbrandtia prototypus Nardo. 
Lithophyllum pustulatum Fosl. 
incrustans Phil. 
lichenoides Ellis. 
Pterosiphonia parasitica Schm. — A Epilithon membranaceum Hcydr. 
single specimen, apparently re- Corallina officinalis L. 
presenting a remarkably robust squamata Ellis. 
form of this species, was for- rubens Ellis et Sond. 
Royal Gardens. Kew. 
