10 A CATALOGUE OF THE BRITISH MARINE ALG^E 



Fam. ULVACE^E Eke. 

 Gen. 43. PRINGSHEIMIA Eke. 



P. scutata Eke. Coasts of Northumberland (Berwick), Kent 

 (Margate), and Dorset (Swanage) ; S.W. Scotland (Cumbrae, 

 Ardrossan) ; Ireland (Belfast Lough). Eare. 



Gen. 44. PROTODERMA Kiitz. 

 P. marinum Eke. S.W. Scotland (Cumbrae). Eare. 



Gen. 45. ULVELLA Crn. 



U. lens Crn. Coast of Devon (dredged in Plymouth Sound). 

 Eare. 



U. fiicicola Eosenv. (= U. Uns Batt. pro parte, non Crn.). Coasts 

 of Northumberland (Berwick) and Cheshire (Heswall). Not un- 

 common. {3 globosa Batt. Coast of Northumberland (Berwick). 

 Eare. 



U. conflnens Eosenv. Coast of Dorset (Weymouth). Probably 

 not uncommon. 



Gen. 46. MONOSTROMA Thur. 



a EUMONOSTROMA. 



M. Wittrockii Born. Coast of Devonshire (Fowey Eiver, Salt- 

 ash, Plymouth); S. Scotland (Tayport). Eare. 



M. latissimum Wittr. Coasts of Devon (Otterton) and Dorset 

 (Portland). Eare. 



M. laceratum Thur. Coasts of Cornwall (Lostwithiel, near 

 Wadebridge), Dorset (Portland), and Essex (Maldou). Eare. 



M. quaternarium Desmaz. PL Crypt. Franc, (nouv. ser.), no. 603. 

 Coasts of Dorset (Poole Harbour, April. 1889; Weymouth, April, 

 1890) and Sussex (Pagham, April, 1892; E. M. Holmes). 



M. orbiculatum Thur. " Sur quelques algues nouvelles " in Mem. 

 Soc. Nat. Cherb. vol. ii. p. 388. Coasts of Cornwall (Falmouth, 

 June, 1884 ; F. W. Smith) and Dorset (Weymouth, April, 1882 ; 

 E. A. B.). 



M. undulatum Wittr. Monostr. p. 46, tab. iii. fig. 9. Orkney 

 Islands (Eonsay ; Mrs. Traill, about 1837, in herb. J. H. Pollexfen). 



M. crepidinum Farlow, Mar. Alg. New Engl. p. 42. Coasts of 

 Cornwall (Falmouth, April, 1882, E. V. Tellam ; and May, 1897, 

 E. George) and Sussex (Pagham, April, 1892; E.M. Holmes). Eare. 



ULVARIA Eupr. 



M. fuscum Wittr. emend. Eosenv. a yenuina Batt. Coasts of 

 Northumberland (Berwick) and Yorkshire (Scarborough); Scotland 

 (Cumbrae, Orkney Islands, Skaill). Not uncommon. /3 Blyttii 

 Batt. (= M. Blytii Wittr.). Coasts of Northumberland (Berwick) 

 and Kent (Dover) ; Scotland (Tayport, Cumbrae). Not uncommon. 



M. Grevillei Wittr. emend. Eosenv. a typica Eosenv. (= Ulva 

 lactuca Grev.). Coasts of Devon (Plymouth, &c.), Cornwall (Fal- 

 mouth), Dorset (Weymouth), Hants (Isle of Wight), and North- 

 umberland (Holy Island, Berwick) ; S. Scotland (Bute, Firth of 



