THE ALGAE OF BERMUDA. 117 



cells in the membrane narrowl}^ rectangular, in quite distinct series 

 to the margin. Compared with the very narrow form from brackish 

 water at West Point, New York, the distinctness of species seems jus- 

 tified, but intermediate forms occur, some from Florida having as wide 

 segments as the Bermuda plant, but with polygonal or rhomboidal 

 cells in indistinct series. The variation can hardly be due to climate, 

 as a specimen of Miss Vickers, Algues de la Barbade, No. 144, has 

 fronds as narrow as in the plant of Long Island Sound and Hudson 

 River. 



Taenioma J. G. Agardh. 



T. PERPusiLLUii J. G. Agardh, 1863, p. 1257; T. macrourum 

 Thuret in Bornet & Thuret, 1876, p. 69, PI. XXV; P. B. -A., No. 

 1935; Polysiphonia perpusilla J. G. Agardh, 1847, p. 16. In a gela- 

 tinous mass among small algae, Gibbet Island, April, Hervey. Tetra- 

 spores were common in this material; a single mature cystocarp was 

 found, but unfortunately was lost before notes and figures could be 

 made. 



Family BONNEMAISONIACEAE. 

 AsPAEAGOPSis Montague. 



A. taxiformis (Delile) comb, nov.; A. Delilei Montague, 1840, p. 

 XIV; Dasija Delilei Montague, 1840, p. 166, PI. VIII, fig. 6; Fucus 

 taxiformis Delile, 1813, p. 151, PI. LVII, fig. 2. Merriman; Cooper's 

 Island, Feb., Farlow. Apparently rare, as we have not met with it, 

 nor have we found it in any other collections than as above. As 

 ]\Iontagne refers to Fucu^ taxiformis Delile, but changes the specific 

 name to do more honor to the author, the original name must be 

 restored according to the international rules. 



Family RHODOMELACEAE. 

 Laurencia Lamouroux. 



1. Ultimate ramuli short, often tubercle-like. 2. 



1. Ultimate ramuli longer. 3. 



2. Ultimate ramuli distant, simple. 2. L. Poitei. 



2. Ultimate ramuli densely set, mostly lobed. 3. L. papillosa. 



