7-1 l 0LLIN8 and Ml l;\ El . 



EIOSENYINGU I 



a. imi:i« vta J. Ag. Borgesen, L914, p. L82; P.B.-A., No. 2173; 

 i-//.v intrieatus J. G. Agardh, I s 17, p. 7: Striaria intricata 

 Vickers, 19Q5, p. 59; 1908, p. n. PI. XXIV. Harris Bay, Feb., 

 Hervey, with plurilocular sporangia. 



Family MYRIOTRICHIACEAE. 



MtHIOTRK HIa Harvey. 



M. repens Hauck, L879, p. 22; Kuckuck, 1899, p. 21, PI. Ill (of 



reprint ; P. P. -A., No. '2()2')\ Dichosporangium repens Hauck, L885, 

 p. 339, fii:. 141. In fronds of Castagnea Zosterae, Cooper's Island, 

 April, Collins. The creeping filament- bear abundant unilocular 

 sporangia; the erect filaments hear each a terminal cluster of pluri- 

 locular sporangia; no unilocular sporangia were seen on the erect 

 filaments. Streblonema sphaericum t with both kinds of sporangia, 

 accompanies the Myriotrickia. A- pointed out by Kuckuck, it is 

 practically impossible to distinguish the two species when both bear 

 only unilocular sporangia, as is often the case; the presence of erect 

 filaments in Myriotrickia and their absence in Streblonema is the only 

 distinguishing character. 



Family MESOGLOIACEAE. 

 i lSTAgnea Derbes & Solier. 



('. Zosterae Mohr) Thuret, fide Borgesen, 1914, p. 184, figs. 

 Ill 145; Castagnea mediterranea P. P. -A., No. 1^7 ( .». Kemp, 

 Mesogloia vermicidaris, M. Griffithsiana and .V. Chordariae; Castle 

 Harbor, Pauley's Pay, March, Wadsworth; Shelly Bay, Jan.. Castle 

 Harbor, Feb., Hervey; Cooper's Island, April, Collins. A- this 



plant seems to be the same as that from the Danish West Indie-, we 



provisionally give the same name used by Borgesen. It was distrib- 

 uted by us as C. mediterranea 'Kin/.. Bornet, but is not Cladosiphon 

 mediterraneus Kutzing, a- shown by comparison with an authentic 



men of the latter, for which we are indebted to the kindne- 



