15 OH Proceeding* of the Royal Irish Academy. 



Ralfsia olavata Fatl. <'I. CB, f, 



verrucosa Aresch. — c. 

 ?L. fatiseens Aresch. — CBr. See note. 

 | Petroderma maculana Kuck. — CB r. Bee note. 

 Bpermatoohna8 paradoxus Kiltz. — CB, AS, BB, c. 

 Stilophora rhizodes -/. Ag. — AS r. 

 Chordaria flagelliformis Ag. — /. 

 Mesogloia vermiculata l.e Jol.— Clf. 



lanosa Cm, — CB r. Dredged in 3 fathoms. 

 Griffithsiana Grev.—CB, AS, r. Washed ashore. 

 1 Acrothrix gracilis Kylin. — CB, AS. r. See note. 

 Castagnea virescens TJiur. — CI c ; Old Head/. 

 Zosterae Thur. — CB, BB,/. On Zostera. 

 Microcoryne ocellata Strom/.— BB r. On Dasya arbuscula. 

 Petrospongium Berkeley i Nag.— CI f. On rocks, and on Ralfsia verrucosa. 

 Leathesia tuberiformis Aresch. — ab. 

 crispa Haw. — CI vr. See note. 

 Sporochnus pedunculatus Ag. — 01, AS, r. Washed ashore. 

 Chorda filum Stackh. — CB, AS, c. 



tomentosa Lyngb. — CI r. In narrow channels. 

 Laminaria saccharina Lamour. — c. 



var. latissima (Turn.) Batt. — CB c. 

 var. Phyllitis Le Jol. — CI c. 

 digitata Lamour. — c. 



var. stenophila Harv. — CIc. 

 var. vallida Fosl.— CB /. 

 Cloustoni Edm. — CI c. 

 Saccorhiza polyschides Batt. (= S. bulbosa De la Pyl.) — CI/. 

 Alaria esculenta Grev. — CI c. 



Cutleria multitida Grev.—CB f. Dredged 3-5 fathoms. 

 (forma Aglaozonia rep tans ( //(. — CB ab. Dredged 3-5 fathoms.) 

 Fucineae. 

 Fucus ceranoides L. — CB, AS, BB, c. See note, 

 spiralis L.—ab. See note. 



var. platycarpus Batt. — CB, AS, ab. 

 var. nanus Stackh. — CB c. See note, 

 vesiculosus L. — ab. See note. 



var. evesiculosus Auct. — CIa&. 

 var. laterifructus Grev. — AS c. 

 var. vadorum Aresch. — CB c. 

 var. balticus J. Ag.— CB, Att, c. 

 \ var. muscoides var. nov. — CB, AS, c, 



