118 



ALPHABETICAL INDEX OF THE 



Sphacelaria filicina. Summer and autumn. Mewstone. 

 Dredged near the breakwater, Plymouth ; Torquay. 



Sphacelaria fusca. Summer. Plymouth ; Sidmouth ; 

 St. Michael's Mount. 



Sphacelaria plumosa. Summer. Mount Batten ; Tor- 

 quay ; Exmouth. Orkney. 



Sphacelaria racemosa. Summer. Frith of Forth. 



Sphacelaria radicans. Summer. Torquay. Bantry, 

 &c. 



Sphacelaria scoparia. Summer. Firestone Bay ; Tor- 

 quay ; Bovisand. Frith of Forth. 



Sphacelaria Sertularia. Summer. Parasitical on va- 

 rious Algae. North and West of Ireland. 



Sphaerococcus coronopifolius. Summer and autumn. 

 Mount Edgecumbe ; Bovisand ; Torquay. Belfast. 

 Bute. 



Sphaerozyga Berkeleyana. Summer. Ditches near 

 Shirehampton, Bristol. 



Sphaerozyga Broomei. Summer. With the preceding. 



Sphaerozyga Carmichaelii. Summer. With the pre- 

 ceding, and on decayed Algae. Barmouth. Appin. 



Sphaerozyga Kalfsii. Summer. With the preceding. 



Sphaerozyga Thwaitesii. Summer. With the preced- 

 ing. Dolgelly. Portbury, Somerset. 



Spirulina Hutchinsiae. Summer. With the preced- 

 ing. 



Spirulina tenuissima. Summer. With the preceding. 



