MARINE ALG^E OF THE ARBROATH DISTRICT. 13 



Hapalidium hildenbrandtioides, Crn. On sterns of FurcellaHa. 



Corallina officinalis L. Very common in tide-pools. 



Melubesia pohjmorpha L., sp. (Lithothamnion polymorphum J. Ag.). 

 Common in poois and on rocks. Limpet-shells at the Red Head 

 found with very irregular lobes. — M. Lenormandi Aresch. (Litho- 

 phyllum Lenormandi Rosanoff). On stones and boulders between 

 tide-marks at East Links. — H. Laminaria Cr. On stems of 

 Laminaria. — M. farinosa Lamour. On Phyllophora rubens at 

 Mason's Cove. — M. pustulata Lamour. Abundant on Laminaria- 

 6tems and roots. 



Hildenbrandtia rubra Menegh. (H. prototypus Nardo, var. (3. rosea 

 Hauck.). On stones and boulders everywhere, and in pools between 

 tide-marks. 



Delesseria sanguinea Lamour. (Hydrolapathum sanguineum Stackh.) 

 Common in pools at extreme low-water mark all round the cliffs ; 

 washed ashore at West Sands in abundance. — D. sinuosa Lamour. 

 Common on Laminaria-stems which are washed ashore from deep 

 water. — D. alata Lamour. Common on La minaria- stems, and in 

 rock-pools at extreme low water. — D. Hypoglossum Ag. Found by 

 Dr. Crichton. Rare. 



Nitophyllum punctatum Grev. Found six plants growing at 

 extreme low- water mark on a boulder, in fruit, August, 1888. Very 

 rare. — N. laceratum Grev. Cast ashore on West Sands, Dr. Crichton. 



Plocamium coccineum Lyngb. Common at low water (spring- 

 tides), and washed ashore in great abundance. A broad and a 

 narrow-leaved variety are found. 



Rhodymenia laciniata Grev. (Callophyllis laciniata Ktz.). One 

 specimen washed ashore at sands. — R. palmata Grev. Grows in 

 great profusion all round the coast from half-tide downwards. At 

 the Bell Rock, stems of Laminaria are covered with specimens 

 twenty inches long. 



Hypnea purpurascens Harv. (Cystoclonium purpurascens Ktz.). 

 Common in pools about low water. 



Gigartina mammillosa J. Ag. Growing abundantly on outside of 

 Protection Wall and Breakwater, but common everywhere. 



Chondrus crispus Stackh. Common about low- water mark ; 

 both narrow and broad-leaved varieties occur. 



Phyllophora rubens Grev. Common in pools at extreme low 

 water at Mason's Cove ; washed ashore abundantly after autumn 

 storms. — P. membranifolia J. Ag. Plentiful at low-water mark ; 

 some very large plants washed ashore at the Harbour in October, 

 1888. 



Oymnogongrus plicatus Kg. (Ahnfeltia plicata J. Ag.). Occasion- 

 ally in sand-pools about low-water mark from Ness to the Common. 



Polyides rotundas Grev. Not uncommon in pools at low water, 

 in same situations as Furcellaria feist igiata. 



Furcellaria fastigiata Grev. (Feistigieiria fur cell etta Stackh.). In 

 pools about low-water mark. At West Sands, washed ashore in 

 abundance. 



Dumontia Jiiiformis Grev. Very plentiful from the Ness to 

 the Common in all pools about half-tide level. 



