110 
ALGA BRITANNICA RARIORES EXSICCATA. 
29. Cexamium divaricatun, Crn., on Zostera. 
Weymouth, October, 1883, K. Holmes. 
30. Chantransia luxurians, Thur ., on Zostera. 
Weymouth, August, 1883, E. M. Holmes. 
31. Cladophora arctiuscula, Crn. 
Berwick-on-Tweed, September, 1884, E. M. Holmes. 
32. Cladophora prolifera, Kutz. 
Weymouth, October, 1884, E. M. Holmes. 
33. Codiolum longipes, Foslie. 
Berwick-on-Tweed, July, 1884, E. M. Holmes, and September, 
1884, E. Batters. 
34. Ectocarpus insignis, Crn., on Chondriopsis tenuissima, J. Ag. 
Bognor, August, 1884, E. M. Holmes. 
35. Ectocarpus reptans, Crn., on Cladophora laetevirens Harv., and 
Chaetomorpha aerea, Kg. 
Exmouth, June, 1882, and Weymouth, November, 1882, K. 
Appleford. 
36. Ectocarpus terminalis, Kiltz., on Corallina. 
Newquay, July, 1884, E. M. Holmes. 
37. Ectocarpus virescens, Thur. 
Weymouth, November, 1883, K. Holmes. 
38. Elachista stellulata, Aresch., on Dictyota. 
Weymouth, August, 1882, E. M. Holmes. 
39. Euthora cristata, J. Ag., on Laminaria Cloustoni, Le Jol. 
Berwick-on-Tweed, September, 1882, E. Batters. 
40. Gigartina Teedii, J. Ag. 
Jersey, August, 1883, E. Batters. 
41. Grateloupia dichotoma, J. Ag. 
Newquay, July, 1884, E. M. Holmes. 
42. Lomentaria reflexa, J. Ag. (Cystocarps.) 
Hele, near Ilfracombe, August, 1883, E. M. Holmes. 
43. Fhyllitis Fascia, Kiltz. 
Elie, July, 1882, and Berwick-on-Tweed, September, 1883, 
E. Batters. 
44. Folysiphonia ceramiaeformis, Crn. 
Swanage, April, 1884, E. M. Holmes. 
45. Polysiphonia Rhunensis, Born. 
Ilfracombe, August, 1883, E. M. Holmes. 
46. Porphyra leucosticta, Thur. 
Joppa, near Edinburgh, June, 1883, G. W. Traill. 
47. Rivularia parasitica, Chauv., on Nemalion multifidum, J. Ag. 
Portland, Weymouth, October, 1884, E. M. Holmes. 
48. Sphacelaria caespitula, Lyngb., on Saccorhiza bulbosa, De la Pyl. 
Berwick-on-Tweed, September, 1883, E. Batters. 
49. Vaucheria dichotoma f. submarina, Lyngb. 
Weymouth, September, 1884, E. M. Holmes. 
50. Vaucheria piloboloides, Thur. 
Weymouth, September, 1884, E. M. Holmes. 
