MABINE MuGJE OF DEVON. 147 



have now 16 specimens of it, but hope to get some more within the 

 next five months. It is not a very rare fern, neither is it common, 

 and it is so distinct that a man, even if he were blindfolded, could 

 make it out by the touch." 



MARINE AIjGM OF DEVON. 

 By E. M. Holmes, F.L.S. 



In a list of the Marine Algas of Devonshire, by E. Parfitt, 

 published in the ' Transactions of the Devonshire Association for 

 the Advancement of Science, Literature, and Art,' tbe number of 

 species recorded is given as 318. From an examination of the 

 species enumerated, it seems doubtful whether Mr. Parfitt has 

 seen the list by Mr. J. Boswarva, of Plymouth, from which some 

 additional localities for Devon algaa might have been quoted ; and 

 it may therefore be useful to place these on record, and to add to 

 them some other species which I myself have met with in Devon- 

 shire. The additions to Mr. Parfitt's list are marked with an 

 asterisk. 



Pycnophycus tuberculatum Huds. Mt. Batten, Boswarva. Abun- 

 dant at Bovisand and Wembury, also near Plymouth, E. M. H. 



*Fucus platycarpus Born. Plymouth and Torquay, E. M. H. 

 Artkrodadia villosa Duby. Firestone Bay, Plymouth, J. Gat- 

 combe. 



*Laminaria flexicaulis Le Jol. Common at Plymouth, Torquay, 

 &c, E. M. H. 



*Carpomitra Cabrera J. Ag. Plymouth Sound, Boswarva. 



*Dictyota ligulata J. Ag. (new to Britain, 1889). Torquay, 

 E. M. II. (Also Charmouth and Lyme Regis, in Dorsetshire). 

 Leatla'sia Berkeleyi Harv. Sidmouth, E. M. II. 

 Ralfsia verrucosa J. Ag. It is this species, and not R. deusta, 

 which occurs on the Devon coast. I have seen no British specimen 

 of R. deusta, which appears to be quite a northern species. — *R. 

 clavata Farl. Torquay, E. M. H. 



Sphacelaria J'usca Agardh. This plant is not so rare as Mr. 

 Parfitt supposes. I have found it abundantly at Ilfracombe, Tor- 

 quay, &c, but it always grows in very shaded pools. — 8. olivacea 

 J. Ag. Ladram Bay, Sidmouth, E. M. H. 



*Ectocarpus simplex Cr. On Codium tomentosum, Mudstone Bay, 

 Brixham, E. M. H. — ■■-E. virescens Born. Torquay, E. M. H. — 

 *E. reptans Kjell. Exmouth, E. M. II.— -E. Crouani Thur. MSS. 

 Near Brixham, E. M. H. 



*Polysiplwni(i rhunensis Born. Ilfracombe, E. M. H. — P. puh-i- 

 nata Harv. The species so named by Mr. Parfitt is in all proba- 

 bility P. sertuUiriuides J. Ag., which is not uncommon on the Devon 

 coast, at Torquay, Plymouth, &c, E. M. H. 



Lomentaria reflexa J. Ag. This plant is abundant at Hele, near 

 Ilfracombe, and occurs also at Sidmouth and Torquay, E. M. H. 



l2 



