116 COLLINS AND HEE"VET. 



section, elongate in younger, squarish in older parts. Tetraspores 

 tripartite, up to 60 fi diam., densely packed in small roundish or oval 

 sori, generally distributed over the frond, slightly projecting on both 

 surfaces; cystocarps unknown. W. Faxon; Miss Wilkinson; Har- 

 rington Sound, Ducking Stool, Feb., Farlow; Dingle Bay, April, 

 caves at Tucker's Town, May, Collins. On rocks below low water 

 mark; forming dense masses, crisp when first taken from the water, 

 but soon softening into a shapeless mass. The branching is so dense 

 and the substance so tender that it is difficult to disentangle indi^ddual 

 plants. When growing the color is mauve, on exposure changing 

 almost instantaneously to orange; when mounted on paper lake or 

 rosy red. In habit like N. marginatum Harvey, Ceylon Algae No. 26, 

 but that species lacks the ciliiform teeth, and has somewhat smaller 

 cells but larger tetraspores, which are in less dense sori, and tend to 

 form a confluent marginal band. A specimen of N. venulosum Zan., 

 from Trieste, leg. Hauck, also resembles iV. Wilkinsoniae, but has more 

 slender segments, less densely branched and tufted, and distinct 

 though microscopic veins. 



Hypoglossum Kiitzing. 



H. h3rpogIossoides (Stack.) comb, nov.; H. Woodwardi Kiitzing, 

 1843, p. 444, PI. LXV, fig. 1 ; Delesseria Hypoglossum Harvey, 1846- 

 51, PI. II; Fuciis hypoglossoides Stackhouse, 1795, p. 76, PI. XIII. 

 Jan., 1912, a single specimen, without exact locality, Hervey. The 

 rather unfortunate combination we now use for the first time, appears 

 to be required by the international rules. 



Caloglossa J. G. Agardh. 



C. Lephieubii (Mont.) J. G. Agardh, 1876, p. 499; P. B.-A., No. 

 2038; Delesseria Leprieurii Montagne, 1840a, p. 196, PI. V, fig. 1; 

 Harvey, 1853, p. 98, PI. XXII. C. Among other algae on mangroves 

 and other objects between tide marks, less commonly pure or nearly 

 so. Farlow; Burchell's Cove, Feb., Ely's Harbor, Dingle Bay, 

 April, Hervey; Hungry Bay, May, Collins. Tetraspores in April. 

 The Bermuda material corresponds to C. mnioides J. G. Agardh, 1876, 

 p. 500,^* the segments being ovate, sometimes quite broadly so, and the 



14 Later, 1898, p. 235, J. G. Agardh intimates that most of the described 

 species of the genus may be only forms, depending on locaUty. This appears 

 to be his latest expression of opinion on the subject. 



