MARINE ALG.E OF THE ARBROATH DISTRICT. 11 



Desmarestia aculeata Lamour. Common, washed ashore in 

 abundance from deep water after storms. 



Alaria esculenta Grev. Plentiful about low- water mark on 

 exposed rocks to the east of Arbroath. 



Laminaria digitata Lamour. (L. hyperborea Foslie). Abundant 

 everywhere from below low-water mark. — L. digitata var. stenophyUa 

 Iiarv. = L. digitata Edm. — L. saccharina Lamour. Common in 

 pools near low water. — L. Phyllitis Lamour (L. saccharina var. 

 phyllitis Le Jolis.). In pools below half-tide level, abundant to west 

 of Harbour. — L. Fascia Ag. ( Phyllitis Fascia Le Jolis). In half- 

 tide pool below Seaforth House. — Var. deUlis ( Phyllitis acspitosa 

 Le Jolis). Common. — L. jicxicaulis Le Jolis. Common at low 

 water about the Harbour Bar. 



Chorda Filum Lamour. Large plants washed ashore occasion- 

 ally ; young are found growing in deep pools all round the cliffs, 

 where the force of the sea is broken by outlying rocks. — C. 

 lomentaria Lyngb. {Scytosiphon louientttritis J. Ag.). Not uncommon 

 in pools between tide-marks ; plentiful below. Plentiful on beach 

 inside of salmon-nets at Cannon Common. 



Dictyosiphon Chordaria Areschoug. The first record of this 

 species in Britain. Detected by Mr. Holmes amongst some Algre 

 collected by me at Whiting Ness, Arbroath, on 29th August, 1889, 

 and exhibited at the Linuean Society on November 7th. — D. 

 famiculaceus Grev. Abundant above half-tide, generally submerged, 

 and growing on other Alga3. — D. hippuroides Aresch. Plentiful, 

 growing on Chordaria fiayclliformis at the Ness, in pools about half- 

 tide level. 



Punctaria plantaginea Grev. At the Mason's Cove, according to 

 Dr. Crichton. 



Asperococcus echinatus Grev. Abundant in all pools near hi^h- 

 water mark. 



Litosiphon Laminaria Harv. Common on Alaria esculenta. 



Chordaria Jiayelliforinis Ag. Common about half-tide level. At 

 the point of the Ness all the plants are more or less covered with 

 Dictyosiphon hippuroides. 



Mesogloia riresccns Carm. (Fudesmc virescens J. G. Ag.). Found 

 in one or two pools beyond Steeple Rock, and at Mason's Cove, 

 above half-tide level. 



Leathcsia tuherijormis S. F. Gray. Very common on rocks about 

 low-water mark. 



Elachisia fucicola Fries. Common on most Fuci about half- tide. 

 — K. velutina Duby. [Streblomnna velutina Thur.). Common on 

 Himanthalia. 



Myrionema stranyu/ans Grev. Rare. Found on Enteroinorphat 

 near high water, in a pool at Stalactite Cave. 



Cladostephus spongwsus Ag. Abundant at low-water mark below 

 Seaforth House and East Links. — C. vcrticillatits Ag. Found in 

 1883 by Mr. Bell, at Dark Cove, floating ? 



Cha-toptcris plumosa Ktz. {Cladostephus plumosus Holmes). Very 

 rare. Two specimens got in a pool at the Corriens. 



Sphacelaria scoparia Lyngb. Abundant in a deep pool beyond 



