34 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Habitat. — On other algae and on rocks covered with Porif- 

 era and Bryozoa at low tide-mark in the littoral and sub- 

 littoral regions. 



Distribution. — N. andersonianuni has now been observed 

 along the coast from San Pedro northward to Carmel Bay. 

 It has never been recorded elsewhere than from the coast of 

 California. 



Localities. — San Pedro! (Mrs. E. A. Lawrencej; Santa 

 Barbara! (Dr. L. N. Dimmick; Mrs. S. P. Cooper); 

 shores of San Luis Obispo County! (Mrs. R. W. Sum- 

 mers); Carmel Bay! (C. P. Nott) ; Pacific Grove ! (Mrs. 

 J. M. Weeks; M. A. Howe); Santa Cruz! (Dr. C. L. 

 Anderson, Mrs. Boardman). 



Nitophyllum ruprechtianum J. Ag. 



o 



Bidrag till Florideernes Systematik. Lunds Universitets Arsskrift., Tome 



VIII, 1871, p. 51. 



Nitophyllum rjiprechtianum Farlow, W. G., Proc. Amer. Acad. Arts and 

 Sci., Vol. X, 1875, p. 365; Report U. S. Fish Comm. for 1875, p. 696, 

 1876. Agardh, J. G., Epicrisis Floridearum, Contin. Spec. Gen. et Ord. 

 Alg., 1876, p. 470. 



Nitophyllum Jlabelligeriiin Agardh, J. G., loc. cit., p. 699. 



Nitophylbim ruprechtia^ium Hervey, A. B., Sea Mosses, 1881, p. 178. 

 Anderson, C. L., Zoe, Vol. II, 1891, p. 223. Howe, M. A., Ery- 

 thea, Vol. I, 1893, p. 68. McClatchie, A. J., Proc. So. Cal. Acad. 

 Sci., Vol. I, 1897, p. 358. TiLDEN, J. E., American Algje, Century III, 

 No. 213, 1898. Agardh, J. G., Contin. Spec. Gen. et Ord. Alg., Vol. 

 Ill, Pt. 3, 1898, p. 94. 



Nitophyllum marginatum Agardh, J. G., loc. cit., p. 93. 



Nitophyllum fartowia^mm Agardh, J. G., loc. cit., p. 95. 



Synopsis. — Frond both prostrate and erect. Prostrate frond creeping, flat, 

 narrowly membranous, or linear; with rhizoids; frequently proliferating, 

 lobed or branching; often provided with midrib and nerves; margin entire, 

 cuneate, or lobed; frequently forming offshoots or innovations. 



Erect frond stalked, with midrib, nerves, and veins; branching, very often 

 proliferating; margin entire, cuneate, undulate, crispulate, laciniate or lobed, 

 often beset with minute proliferations. Branching subdichotomous or sub- 

 palmate, with branches linear and often much prolonged, occasionally alter- 

 nate below, becoming expanded and cuneate above, frequently divided or 

 lobed. Stalk linear, flat, with definite midrib, very often becoming cylin- 

 drical through wearing away of margin and thickening of midrib, frequently 

 twisted by wave action, often persistent and freely proliferating. Midrib 



