Clare Island Survey — Marine Algae. 15 91 



*Oscillaria Corallinae Gom. — CI/. On Lithothophyllum incrustans. 

 "'• laetevirens Cm. — CI r. On Gelidium repens. See note, 

 brevis Kiitz. — CI r. 



* sancta Kiitz. — CIr. See note, 

 liniosa Ag. — CI, CB,/. See note. 



*Phormidium fragile Gom. — CI r. With Ectocarpus on Patella. 



tenue Gom. — CI r. 

 J persicinum Gom. — CIr. See note. 

 | subuliforme Gom. — CI r. See note. 

 *Lyngbya Meneghiniana Gom. — CI )'. On Codium tomentosum in pools. 



aestuarii Liebm. — CB c, AS /. 



niajuscula Harv. — CB, AS, /. 

 \ confervoides C. Ag. — CB/. See note. 



* semiplena J. Ag. — CI, CB, AS, r. 



lutea Gom. — CI/. On rocks near high-water line. 

 Symploca hydnoides Kiitz. — CIr. On Corallina in shallow pools. 

 | dubia Gom. — CIr. On brackish rocks. 



:; Plectonema Nostocorum Born. — CI, CB, AS, I. In Rivnlaria nitida. 

 tenebrans Bom. et Flah. — CI, The Bills, r. In shells of Balanus. 

 Battersii Gom. — Roonah Point r. With Galothrix scopuloricm. 

 ; - ; norvegicum Gom. — CIr. 

 Microcoleus chthonoplastes Thur. — AS, CB, ab. See note. 



* tenerrimus Gom. — AS r. 

 Calothrix confervicola Ag. — ab. 



consociata Bom. et Flah. — CB r. On Fucus vesiculosus var. muscotdes. 

 scopulorum Ag. — CI ab, CBr. 

 pulvinata Ag. — CB, AS, /. 



* parasitica Thur. — Old Head r. In Nemalion multifidum. 



* aeruginea Tlmr. — CI r, Old Head r. See note, 

 t'usca Bom. et Flah. — Mulranny r. See note. 

 Crustacea Thur. — CIr. On limpets in high-water pools, 

 fasciculata Ag. — AS /. On peat-banks. 



+ endophytica sp. nov. — Annagh Island. See note. 



Isactis plana Thur. — CB/, BBZ. On stones, and on stems of Laminaria digitata. 

 Rivularia Biasolettiana Menegh. (= R. coaduncta Fosl). — Bunowen River/, 

 atra Both. — ab. 



nitida Ag.— CB, AS, BB, ab, CI r. 



bullata Berk. — CI/, Mulranny/. On exposed rocks at half-tide level. 

 *Brachytrichia Balani B. and F. — CI ;■. In cave at Portlea. 



[Mastigocoleus testarum Lagerh.] — Roundstone (coll. lohnson, 1893). 

 *Microchaete grisea Thur. — CB r. On shells in 5 fathoms. 

 Anabaena torulosa Lagerh. — CB, BB, /'. On various algae. 



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