Clare Island Survey — Marine Algae. 15 91 



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

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

 brevis Kiltz. — CI /•. 



* sancta Kiitz. — CI r. See note, 

 limosa Ay.— CI, CB,/. See note. 



*Phormidium fragile Gom. — CI /'. With Ectocarpus on Patella. 



tenue Gom. — CI r. 

 J persicinum Gom. — CI r. See note. 

 } subuliforme Gom. — CI r. See note. 

 *Lyngbya Meneghiniana Gom.— CIr. On Codium tomentoswm in pools. 



aestuarii Liebm. — CBc, AS/. 



inajuscula Harv. — CB, AS, /. 

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



semiplena J. Ag. — CI, CB, AS, r. 



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

 Syinploca hydnoides Kiltz. — CI?-. On Corallina in shallow pools, 

 f dubia Gom. — CI r. On brackish rocks. 

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



tenebrans Born, et Flak. — CI, The Bills, r. In shells of Balanus. 



Battersii Gom. — Roonah Point r. With Calothrix scopulorum. 



* norvegicum Gom. — CI?\ 



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



* tenerrimus Gom. — ASr. 

 Calothrix conf ervicola Ag. — ab. 



consociata Bom. et Flah. — CB r. On Fucus vesiculosa var. muscoides. 

 scopulorum Ag. — CI ab, CBr. 

 pulvinata Ag. — CB, AS, /. 



* parasitica Thur. — Old Head r. In Nema I ion multifidiim. 

 aeruginea Thur. — CI r, Old Head r. See note. 



fusca Born, et Flah. — Mulranny r. See note. 

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

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

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

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

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

 atra Roth. — 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. Johnson, 1893). 

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

 Anabaena torulosa Lagerh. — CB, BB, f. On various algae. 



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