A CATALOGUE OF THE BRIRISH MARINE ALG 938 
Fam. Gratrevoupiace® Schm. 
Gen. 227. Hatymenta Ag, 
H. latifolia ae se aot Co, Antrim. Very rare; only 
obtained by dredg 
Gen. 228. Graretoupra Ag. 
G. filicina Ag. Coasts of Somerset (Minehead); Cornwall 
sonnel St. — Mount’s ah a Whitsand Bay) ; 
(Ilfracombe, Lynmouth, Torbay, mouth, Sidmo out) ; 
Suite (Falinstowe. Wales (Abeeystwithy. Naas Islands (Jer- 
_ sey, eh ipe y).—Var. £ intermedia Holm. & Batt. Devon (Torquay, 
Exmouth). dinannel Islands (Guernsey). 
G. dichotoma J. Ag. Coasts of Somerset (Minehead) ; Cornwall 
(St. Michael’s Mount, St. Pett oe shar Falmouth, Fowey, 
Newquay); Devon (Plymou 
G. minima Crn. Coast of Bevon ({iftacombe, Torquay). Rare. 
Fam. Dumontiacez Schm. 
Gen. 229. Dumontia Lamour. 
D. incrassata ‘op . (= Ulva epee Mill. Fl. Dan. t. 653 
PeeE non Huds. F 1. An gl. ed. 2, p. 572; U. jfiliformis Huds. FI. 
Angl. ed. 2, p. 570 (1778) ; Dumontia filiformis Grev.). Coasts of 
Cornwall, Devon, Dorset, Hants, Essex (Blackwater Estuary) ; 
Norfolk (Cromer), Yorks., Durham, Northumberland, Cheshire, 
Isle of Man, Wales, Scotland, Ireland, and the Channel Islands. 
Common on most parts of the British coasts. — Var. 8 crispata 
Coasts of Devon (Torquay); Northumberland (Budle Bay, Berwick). 
Scotland (Dunbar, Joppa, Leith, Elie, &c.). Not uncommon. 
Gen. 2380. Dupresnaya Bonnem 
Nee verticillata Le Jol. (= Ulva verticillata Velle in Wither. Bot. 
. ed. 8, vol. iv. & 127 (1796), e spec. orig. erb. Kew. ; 
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ney (Kirkwall); Bute (Arran and Cumbrae); Ayr (Baltaoets). 
Ireland (Bantry). Channel Islands (Jersey, Guernsey). Rare. 
Gen. 231. Drsea Stackh. 
D. edulis Stackh. = Tridaa edulis Harv.). Coasts of ge ee 
Devon, Dorset, Hants, Sussex, Kent, Hssex, Norfolk, Yorks., 
Durham, Northumberland, Isle of Man, Wales, Scotland, Ireland, 
and Channel Islands. Common 
Fam. Nemasromace® Schm. 
Tribe ScutzyMENtE& Schm. 
nal 932. CatosrpHonia Crn. 
C. vermicularis Sch C. Finisterre Crn.). Coasts of Dorset 
(Weymouth) and Ciel islands (Jersey). Very rare 
