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, 

 limosa Ag. — CI, CB,/. See note. 



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



tenue Gom. — CI r. 

 | persicinurn Gom. — CI r. See note. 

 | subuliforme Gom. — CI r. See note. 

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



aestuarii Liebm. — CB c, AS /. 



majuscula 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. 

 Syrnploca hydnoides Kiitz. — CIr. On Corallina in shallow pools, 

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

 'Plectonema Nostocorurn Born. — CI, CB, AS, I. In Bivularia nitida. 



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



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



* norvegieum 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. muscoides. 



scopulorum Ag. — CIa6, CBr. 



pulvinata Ag. — CB, AS, /. 



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



* aeruginea Thur. — CIr, Old Headr. See note. 

 fu3ca 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 oi Laminar ia dig itata. 

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



atra Both. — ab. 



nitida Ag.— CB, AS, BB,ai, CI r. 



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

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



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

 "Microchaete grisea Thur. — CB /•. On shells in 5 fathoms. 

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



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