REPORT ON THE BOTANY OF THE ATLANTIC ISLANDS. 121 



Cryptonemiace,*;. 



Grateloupia filicina, K. A. Agardh. 



Gratdoupia filicina, K. A. Agardh, Sp. Alg., i. p. 223 ; Kiitz., Sp. Alg., p. 730 ; Dickie in Journ. 

 Linn. Soc. Lond., xiii. p. ISO ; Melliss, St Hel., p. 381. 



St Helena. — Rather comnaou — Melliss. 



Both the ordinary form and the var. ramentacea occur. 



Generally diffused. 



Ceramiace^e. 

 Centroceras clavulatum, J. G. Agardh. 



Centroeeras davulaturn, J. G. Agardh, Sp. Alg., ii. p. 148; Dickie in Journ Linn. Soc. Lond., xiii. p. 

 180; Melliss, St Hel., p. 381. 



St Helena. — Found adhering to Corallina carinata — Melliss. 

 Generally diffused. 



Griffithsia setacea, K. A. Agardh. 



Griffithsia setacea, K. A. Agardh, Sp. Alg., ii. p. 129 ; Kiitz., Sp. Alg., p. 660 ; Dickie in Journ. Linn. 

 Soc. Loud., xiii. p. 180 ; Melliss, St Hel, p. 381. 



St Helena. — Adhering to Laurencia cruciata — Melliss. 



Eastern North Atlantic ; Mediterranean ; New Zealand ; Tasmania. 



CHLOROSPERME^E. 

 Siphonace^e. 



Codium tomentosum, K. A. Agardh. 



Codium tomentosum, K. A. Agardh, Sp. Alg., i. p. 452; Dickie in Journ. Linn. Soc. Lond., xiii. 

 p. 180; Melliss, St Hel., p. 381. 



St Helena. — In pools on the windward coast ; very rare — Melliss. 

 Generally diffused. 



Yaloniace.e. 

 Valonia verticillata, Kiitz. 



Valonia verticillata, Kiitz., Sp. Alg., p. 508? Dickie in Journ. Linn Soc. Lond., xiii. p. 181 ; Melliss, 

 St Hel, p. 381. 



St Helena. — Rare in pools — Melliss. 



(bot. CHALL. EXP. — PART II. — 1881.) B 16 



