15 96 Proceedings of the Royal Irish Academy. 



Ralfsia clavata Farl. — CI, CB, /. 



verrucosa Aresch. — c. 

 * ?L. fatiscens Aresch. — CB r. See note. 

 fPetroderma maculans Kuck. — CB r. See note. 



Spermatochnus paradoxus Kiitz. — CB, AS, BB, c. 

 , Stilophora rhizodes J. Ag. — AS r. 

 Chordaria flagelliformis Ag. — -/. 

 Mesogloia vermiculata Le Jol.— Clf. 



lanosa Cm. — CB r. Dredged in 3 fatlioms. 

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

 fAcrothrix gracilis Kylin. — CB, AS, r. See note. 

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

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

 Microcoryne ocellata Strovif.— BBr. On Dasya arbuscula. 

 Petrospongium Berkeleyi Ncig.— CI f. On rocks, and on Balfsia verrucosa. 

 Leathesia tuberiformis Aresch. — ab. 

 crispa Harv. — CI vr. See note. 

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

 Chorda filum Stackh.— CB, AS, c. 



tomentosa Lyngb.— CI r. In narrow channels. 

 Laminaria saceharina Lamour. — c. 



var. latissima (Turn.) Batt. — CB c. 

 var. Phyllitis Le Jol—CI c. 

 digitata Lamour. — c. 



var. stenophila Han: — CIc. 

 var. vallida Fosl. — CB /. 

 Cloustoni Earn. — CI c. 

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

 Alaria esculenta Grev. — CI c. 



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

 (forma Aglaozonia reptans Cm. — CB «li. Dredged 3-5 fathoms.) 

 FuciNEAE. 

 Fucus ceranoides L. — CB, AS, BB, e. 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. — CI ab. 

 var. laterifructus Grev. — AS c. 

 var. vadorum Aresch. — CB c. 

 var. balticus /. Ag. — CB, AS, c. 

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



