THE ALGAE OP BERMUDA. 115 



LoMENTARiA Gaillon. 



L. UNCiNATA Meneghini in Zanardini, 1840, p. 21; Farlow, 1881, 

 p. 154. Miss Wilkinson; Walsingham, Jan., Hervey. Rather small 

 plants. 



Var. FiLiFORMis (Harv.) Farlow, 1881, p. 155; Chylodadia Bailey- 

 ana var. filiformis Harvey, 1853, p. 185, PI. XX. C, fig. 2. Very 

 small plants among Polysiphonia macrocarpa, on mangroves. Hungry 

 Bay, May, Collins. 



Champia Desvaux. 



C. PARVULA (Ag.) Harvey, 1853, p. 76; P. B.-A., No. 1934; Chon- 

 dria parvtda Agardh, 1824, p. 207; Chylodadia parvula Harvey, 1846- 

 51, PI. CCX. Gibbet Island, Jan., Heron Bay, April, Hervey; Gib- 

 bet Island, Sept., Fairyland, Dec, Collins. On Sargassum, Coel- 

 arthrum and other algae; mostly with tetraspores; small plants, 

 seldom over 3 cm. high. 



Family DELESSERIACEAE. 

 NiTOPHYLLtJM Greville. 



N. Wilkinsoniae sp. nov.; P. B.-A., No. 2037. Frondes usque 

 ad 10 cm. altae, dense di- polychotomae, divisionibus linearibus 

 cuneatisve, latitudine centimetrum raro superantibus; marginibus 

 dentes minutas ciliiformes plus minusve approximatas ferentibus; 

 venis nuUis; fronde monostromatica, juniore 15 ;u crassa, adultiore 

 usque ad 60 ju; cellulis in superficiem visis irregulariter polygonis, 

 30-80 /^ diam.; in sectione transversali junioribus elongatis, adultiori- 

 bus subquadratis. Tetrasporangiis tripartitis, ad 60 // diam., soris 

 rotundatis vel elongatis per totam frondem sparsis, utrinque pro- 

 minulis; cystocarpiis ignotis; substantia tenuissima; fronde viva, 

 colore malvacea; emersa cito in aurantiacam mutata; siccata rosea. 

 Plate I, fig. 8, Plate II, fig. 9, Plate V, figs. 32-33. 



Fronds up to 10 cm. high, densely tufted, di- polychotomously 

 divided, divisions linear or cuneate, seldom over one cm. wide, margin 

 more or less densely set with small ciliform teeth; no veins; mono- 

 stromatic, 15 yn thick in the younger part, up to 60 fx in older parts; 

 cells regularly polygonal in superficial view, 30-80 ^ diam., in cross 



