FAUNA AND PLOKA OF PLYMOUTH SOUND. 159 



SphcBrococcus coronopifolius (Buck's-horn Spliserococcus). Sound. Summer and 



winter. 

 Gracilaria confervoides (Conferva-like Gracilaria). On rocks and stones on tlie 



shore. General. Spring to winter. 

 G. multipartita (Many-divided Gracilaria). On rocks and stones on the shore. 



Tait's Hill ; Firestone Bay. Perennial. Summer and winter. 

 G. erecta — \_Cordylecladia erec/a]— (Erect Gracilaria). Torpoint. Perennial. 



Fruiting in winter. 

 Cystoclonium purpurascens — [old name, Hypnea purpurascp.ns\ — (Purple Cystoclo- 



nium). Mount Batten ; Redding Point. Annual. Summer. 



Order XII. Gryiptonemiacese. 



Grateloupia filicina (Fern-like Grateloupia). Whitsand Bay ; Mount Batten 

 Perennial. Winter and spring. 



Gelidium corneum (Horny Gelidium). On rocks and in pools. General. Annual. 

 Summer. Several varieties. 



Gigartina pistillata (Pedicellate Gigartina). Whitsand Bay. Perennial. Summer 

 and autumn. Rare. 



G. acicularis (Needle-branched Gigartina). Bovisand j Redding Point. Annual. 

 Winter. Rare. 



G. mamillosa (Mamillose Gigartina). General. On rocks. Perennial. Winter and 

 summer. Carrigeen Moss. 



Chondrus crispus (Curled Chondrus). General. On rocks and in pools. Perennial. 

 Spring and summer. Carrigeen Moss. 



C. norvegicus — [^Gymnogongrus norvegicus~\ — (Norwegian Chondrus). In pools ; 

 occasionally on shore-rocks. Perennial. Autumn to summer. 



Phyllophora rubens (Red Phyllophora). Whitsand Bay. Perennial. Winter and 

 spring. 



P. membranifolia (Membrane-leaved Phyllopliora). In rock-pools, but not frequent. 



P. Brodicei (Brodie's Phyllophora). On Laminaria. Whitsand Bay. Perennial. 

 Winter and spring. 



P . palmettoides (Palmetta-like Phyllophora). Whitsand Bay. Perennial. Winter 

 and spring. Rare. 



Gymnogongrus Griffithsice (Mrs. Griffiths's Gymnogongrus). Cawsand Bay ; Mount 

 Edgcumbe. Perennial. Autumn and winter. Rare. 



G. plicatus — \_Ahnfeldtia plicata'] — (Entangled Gymnogongrus). In shallow rock- 

 pools. Bovisand ; Mount Edgcumbe. Perennial. Common. 



Polyides rotundus (Round Polyides). In pools and running water. Common. 

 Perennial. Winter and spring. 



Furcellaria fastigiata (Pointed Furcellaria). Half-tide mark. Mount Batten. 

 Perennial. Winter. 



Dumontia filiformis (Thread-like Dumontia). General. Annual. Summer. 



Halymenia ligulata (Strap-shaped Halymenia). Deep water. Annual. Summer. 



Ginannia furcellata — \^Scinaia furcellata'] — (Forked Ginannia). Deep water, and 

 on rocks. Whitsand Bay. Annual. Summer. 



Kallymenia reniformis (Kidney-shaped Kallymenia). Deep water, and at low-water 

 mark. Mount Edgcumbe. Perennial. Summer and autumn. 



K. Dubyi — \_Schizymenia Dubyi] — (Duby's Kallymenia), Firestone Bay; Hoe; 

 Mount Edgcumbe ; Mount Batten. Annual. Winter and spring. 



Iridcea edulis — [Schizymenia edulis~\ — (Edible Iridaea). On the coast, and in deep 

 water. General. Perennial. Autumn and winter. 



Catenella Opuntia (Indian-fig Catenella). Faces of rocks. Hoe; Mount Edg- 

 cumbe. Fereninal. 



Naccaria Wiggii (Wigg's Naccaria). Sound. Annual. Summer. Rare. 



Gloiosiphoni.a capillaris (Slender Gloiosiphonia). In tide pools. .Mount Edg- 

 cumbe; Wembury Bay. Annual. Early summer. 



Nemaleon multijidum (Many-slii Nemaleon). On rocks, at low-water mark. Caw- 

 sand Bay; Bovisand. Summer. 



