10 THE MAEIXE ALG^ OF GTTERXSET 



Mykioxema STRAXGULAys Grev. c. — vsLY. jJiinctfformell.&B. 



{3£. 'punctiforme Harv. and J/, intermedium Fosl.). On 



Ger. ruhrum, [E. 6. W. 4.] 

 M. EEPTAXS Fosl. (^Ascocylus reptans Ileinke ; Chilionema 



reptans Sauv. ; Hecatonema reptans Sauv.). r. On Saccorh. 



IJolyschides, Rhodochortoii sp. 

 G. Hecatonema onaculans Sauv. On Corallina officinalis. r. 



N.W. 5. 

 C.I. H. speciosum Cotton, v.r. W. 5. On stipes of Saccorhiza 



and on Desmarestia aciileata. 



The specimen was kindly determined by Mr. Cotton as 



identifical with the species collected by him at Clare Island. 

 Chilioxema Nathalie Sauv. {Myrionema Lechlancherii Harv. 



pro parte), c. 

 AscocYLUS ORBICULARIS Magn. H. & B. "on ZosteraP 

 Ealfsia CLAY ATA Farlow. c. On limpets. [E. 2, 10. N.W. 2.] 

 E. yerrucosa Aresch. [S. 3, 5. "With pleurilocular sporangia." 



N.W. 4, 5.] E. 11. S.W. Limj^et-shells and small 



stones. 

 C.I. Spermatochxus paradoxus Kiitz. {Sfilopliora Lynghyei.^. Ag. ). 



r. N. 1. Floating and on Cystoseira fibrosa. 

 Stilophora rhizoides J. Ag. [N.W. 4, 5.] E. 10, 2. On 



Cystoseira cricoides. 

 Chordaria flagelliformis Ag. [N.W. 4. W. 7.] N. 1. 



W. 4. 

 Mesogloia yermiculata Le Jol. c. [S. 5. N.W. 4. E. 10, 2.] 



N. 1. On stones and other algae. 

 M. Leyeillei Menegh. {Liehmannia LeveiUeiJ. Ag.). [E. 2.] 



N. 1. On stones. 

 CI, M. LAXOSA Cm. One specimen, W. 7. 



Castagxea yirescexs Thur. (Jfesoqioia virescens Carm.). c. 



[E. 3, 10. N.W. 4. W. 4.] S.W. E. 6. W. 5. N. 1. 

 C. ZosTERJE Tluu'. {31. virescens, var. zostericola Harv.). 



N.W. 3. r. 

 c,i. C. coxTORTA Thur. W. 1. r, 



Petrospoxgium Berkeleyi Nag. {Leatlisia BerkeJeyeiHnry.). 



c. N. 2. S. 2. 

 Leathsia difformis Aresch. {Leatlisia ttiheriformis S. F. Gray). 



a. 

 Sporochxus peduxculatus Ag. In H. & B. '02. 

 €horda FiLUisi Stackh. c. Among Zostera. 

 Lamixaria saccharixa Lamour. c. On rocks. 

 L. DIGIT AT A Lamour. c. On rocks. — (c.i.) var. linearis J. Ag. 



Pool form, half-tide. E. 6. 

 c.i. L. Cloustoxi Edm. (i. liypohorea Fosl.). a. 



This is a well-established inhabitant of the shores of the 



Channel Islands on the north and west coasts. As indicated 



by Cotton, the species " grows in about 15 fathoms of water, 



the stout and rigid stems being specially suited to the strong 



pull of the rollers in deep water." 



The plants can be seen at extremely low spring tides, when 



