! UN8 \\l> ill .i;\ i 



ranched, the lower joints longer, the upper joints en< 

 In three e\ lindrical lol i 



Forma gracius B 1913, p. Ill, fig. 89. Joints small, 



circular in outline, not strongly calcified. 



These forms .-ill pass into each other. Borgesen considers //. Monile 

 and //. simvlans also as Forms of this species, and it may be that he is 

 to the former, l>ut the differences between these two, and the 

 three forms thai we consider to belong to //. tridens, are greater than 

 the differences among the latter. Gepp and Borgesen prefer the name 

 //. incrassata to //. tridens; the case for the former is stated by Bor- 

 gesen, L911, p. 136, that for//, tridensby Howe. 1907, p. 501. 



I II. Monile (Ell. & Sol.) Lamouroux, 1812, p. 186; Collins, 

 L909, p. 399; B. 15. -A.. No. 1915; //. incrassata forma monilis Barton, 

 1901, p. -'7, PL IV. fig. Id; CoraUina monilis Ellis cV Solander, 1" 



p. 110, PI. XX. fig. e. Inlei, Jan.. Oct.. Dec., Bailey's Bay. Jan., 



Walsingham, Nov., Tucker's Town, Dee., Hervey; Hungry B 



April, Collins. Rather common; the forms recognized by B 



both occur here. 



Forma ROBUSTA # B6rgesen, L913, p. 113, fig. 90. Densely branched, 

 the upper joint- cylindrical, the lower tripartite and sometimes resem- 

 bling th.e upper joints of //. tridens forma tripartita. 



Forma < niNDRiCA Borgesen, 1913, p. L13, fig. HI. Less branched, 

 the joinr> nearly all cylindrical. 



Family BRYOPSIDACEAE. 



Bryopsis Lamouroux. 



1. Hamuli distichous. 2. B. pennata. 



1 . Ramuli not distichous. 2. 



2. .Main branches virgate, with very slender ramuli. •'). B. Duchassaingii. 



2. Outline pyramidal, branching of BeveraJ orders, do sharp distinction 



between branches and ramuli. 1 . B. hypnoidee. 



1. B. HYPNOIDES Lamouroux, ISO!), p. 333; L809b, p. 135, Bl. I, 

 2, a ,\: b; Collins, L909, p. 403. Harrington Sound, -lam, Feb., 



April, Walsingham, March, Hervey; Kemp, May, as />'. plumos 

 . cave by Gravelly Bay, April, Collins. 

 Forma pi i \ J. G. Agardh, L886, p. 28; P. B.-A., No. 1870; 



H. hypnoides Harvey, 1846 51, Bl. ("XIX. Harrington Sound. May, 

 < 'ollins; Old Ferry, April, Hervey. 



2. B. Duchassaingii -I. (;. Agardh, L854, p. 107; Collins, 1909, 



