1 10 CELLULOSE. 



509. PHYLLOPHORA, Grev. PHYLLOPHORA. 



512. P. ruttens, Grev. Red Phyllophora. Cork harbour : Dr. 

 Harvey. Youghal : Miss Ball, along our rocky coast. common. 



510. SPELEROCOCCUS, Stack. SPH^EROCOCCUS. 



513. S. coronopifolim, Ag. Coronopean Sphcerococcus. Bantry 

 bay : Mm Hutchins. Youghal : Miss Ball. Cork harbour, rather 

 general. common. 



511. GELIDIUM, Lamour. GELIDIUM. 



514. G. corneum, Lam. Horny Gelidium. Trabolgan very common. 



> K. pulchellum, Harv. Bantry bay: Miss Hutchins. 

 Youghal : Miss Ball. rare. 



X. claviferum, Harv. Bantry bay: Miss Hutchins. 

 Youghal : Miss Ball. very rare. 



512. PTILOTA, Ag. PTILOTA. 



515. P.plumosa, Ag. Feathered Ptilota. Cork harbour. common. 



Tribe XIII. Ceramiece. 

 513. POLYSIPHONIA Grev. POLYSIPHONIA. 



516. P. parasitica, Grev. Parasitic Polysiphonia. Bantry bay : 

 Miss Hutchins. Youghal, washed up : Miss Ball, very rare. 



517. P. cristata, Harv. Crested Polysiphonia. Bantry bay: Miss 

 Hutchins. very rare. 



518. P. thuyoides, Harv. Arborvitte Polysiphonia. Bantry bay : 

 Miss Hutchins. rare. 



519. P. fruticulosa, Grev. Shrubby Polysiphonia. Bantry bay : 

 Miss Hutchins. rare. 



520. P. atrorubescens, Grev. DarJcred Polysiphonia. Ballycotton ; 

 Youghal : Miss Ball. On rocks along the coast of the county : 

 Dr. W. H. Harvey. rather rare. 



521. P. nigrescens, Grev. Dark Polysiphonia. Harbour, Youghal. 

 common. 



522. P. fastigiata, Grev. Fastigiate Polysiphonia. Cork harbour. 

 common. 



523. P. Brodicei, Grev. Erodes Polysiphonia. Along the coast. 

 rather rare. 



524. P. fibrillosa, Grev. Fibrilled Polysiphonia. Bantry : Miss 

 Hutchins ; the only person who has observed it. very rare. 



525. P. fibrata, Harv. Bearded Polysiphonia. Bantry bay : Miss 

 Hutchins. Probably along our western coast. rather common. 



526. P. stricta, Grev. Straight Polysiphonia. Bantry bay : Miss 

 Hutchins. rare. 



527. P. pulvinata, Ag. Cushion Polysiphonia. Along the coast of 

 the county, on rocks and Alga : Dr. W. H. Harvey. rather rare. 



528. P. urceolata, Grev. Urceolate Polysiphonia. Youghal : Miss 

 Ball. Along the coast of the county : Dr. W. H. Harvey common. 



i ft. patens, Grev. Youghal : Miss Ball rather common 



