THE MARINE BOTANIST. 317 



pressed, curled or twisted, much and repeatedly 

 branched and interwoven into a (more or less) thick 

 and inextricable mat, everywhere covered with 

 spine-hke branchlets, which makes this species 

 rather harsh to the touch, and distinguishes it 

 from E. clathrata, which has a soft and silky feel. 



E. Hopkirkii, Dredged in four to ten fathom 

 water. Annual. Summer and autumn. Good- 

 rington, Torbay. Carrickfergus. ^^ Fronds six to 

 twelve inches long or more ) of exceeding fineness 

 and delicacy. It rivals, in the tenuity and beauty 

 of its frond, and in their bushy branching, the most 

 delicate Cladophorse ; having, to the naked eye, an 

 aspect not very unhke that of C. Eudolphiana, and 

 being more slender than C. gracilis. Under the 

 microscope, it is known by the very large size of 

 its nearly empty cells, in the centre of which a 

 small spherical grain of emerald green endochrome 

 is found. The ramuli are so slender that they con- 

 sist of a single row of such cells, and thus have 

 something the character of the threads of a Con- 

 ferva." The late Mr. M^Calla named this species 



