CELLULOSE. ALGACE^. Ill 



529. P. elongata, Grev. Horned Polysipkonia. Cork harbour. 

 common. 



530. P. byssoides, Grev. Byssoid Polysiphonia. Bantry bay : Miss 

 Hutchins. Ballycotton and Youghal : Miss Ball. rather common. 



514. DASYA, Ag. DASYA. 



531. D. coccinea, Ag. ScarletDasya. Bantry bay: Miss Hut chins 

 Youghal : Miss Ball. Cork harbour and along our shores common. 



532. D. arbuscula, Ag. Shrubby Dasya. Bantry : Miss Hutchins 

 rather rare. 



515. CERAMIUM, Adans. Ag. CERAMITJM. 



533. C. rubrum, Ag. Red Ceramium. Cork harbour ; Youghal 

 very common. 



534. C. diaphanum, Ag. Variegated Ceramium. Cork harbour 

 common. 



535. C. agardhianum, Griff. Agardh's Ceramium. Youghal : Miss 

 Ball. rare. 



536. C. ciliatum, Ducluz. Ciliated Ceramium. Cork harbour : 

 Dr. Scott. Youghal : Miss Ball. probably rather common, 



516. GRIFFITHSIA, Ag. GRIFFITHSIA. 



537. G. eguisetifolia, Ag. Horsetail Griffithsia. On the western 

 coast of the county : Dr. W. H. Harvey. rather rare. 



538. G. multifida, Ag. Multifid Griffithsia. Bantry bay : Miss 

 Hutchins. Only along our western coast. rather rare. 



539. G. corallina, Ag. Coralline Griffithsia. At Corkbeg, on the 

 shore of Cork harbour : Dr. Harvey. 



540. G. setacea,A.g. Setaceous Griffithsia. Cork harbour. common. 



517. CALLITHAMNION, Lyngb. CALLITHAMNION. 



541. C. plumula, Lyngb. Pectinated Callithamnion. Ban try bay: 

 Miss Hutchins. Youghal : Miss Ball. Cork harbour : Dr. Harvey. 

 rather rare. 



542. C. cruciatum, Ag. Cruciate Callithamnion. Cork harbour : 

 Dr. Harvey. And probably along our shores. very rare. 



543. C. arbuscula, Lyngb. Shrubby Callithamnion. Bantry, and 

 along the western coast of the county : Dr. W. H. Harvey. rare. 



544. C. Hookeri, Ag. Hooker's Callithamnion. Youghal: Miss 

 Ball. rare. 



545. C. roseum, Ag. Rosy Callithamnion. Bantry bay : Miss 

 Hutchins. Cork harbour : Dr. Harvey. Ballycotton bay. rare. 



546. C. byssoides, Arnott. Bissus Callithamnion. Cork harbour: 

 Dr. W. H. Harvey. On the larger Algae. very rare. 



547. C. polyspermum, Ag. Manyseeded Callithamnion. Bantry 

 bay : Miss Hutchins. Youghal : Miss Ball. rather rare. 



548. C. tetricum, Ag. Rope Callithamnion. On south and west 

 coast of the county : Dr. W. H. Harvey. rather common. 



549. C. tetragonum, Ag. Square Callithamnion. On the larger 

 Algae along our coast : Dr. W. H. Harvey. rather common. 



550. C. Grevillii, Harv. Greville's Callithamnion. Bantry bay : 



