( OLLIXS \\D llll;\ 1 ^ 



Ernodesmis Borgesen 



E. \ i i.ii< him \ Kfitz. Borgesen, 1912, p. LO 1-'; 1913, 



j). I : 54. 1*. IJ.-A.. No. 1907; Valonia verticillata Kutzing, 



L849, p. 508; ( ollins, L909, p. 373. Kemp, April, St. Georj 

 unnamed specimen in herb.; Castle Harbor, Parlow; Harrington 

 Sound, 3 1<> dm., June, Howe; cave by Gravelly Bay, April, tidal 

 stream, Hungry Bay, July, Collins. Generally grows in dense ma 

 of crisp fronds, but easily separable. 



Siphono* ladu8 Schmitz. 



1. Primary cell long, erect; substance soft. 1. S. tropicus. 



1. Primary cell short; substance firm. 2. S. rigidus. 



1. S. rROWCUfl (Crouan) J. G. Agardh, L886, p. 105; Borj 

 L913, p. 61, figs. 11 51; Collins, L909, p. 374; Vickers, L908, p. 

 20, PL XVIII; Apjohnia tropica Crouan in Maze" ^: Schramm, 18" 

 77, p. 105. Harris Bay, in pools, a few individuals only, Feb., 

 Hervey. 



2. S. bigidus Howe, L905, p. 244, PL XII, fig. 1; PL XIV; Col- 

 lins, L909, i>. 374, fig. L39; P. B.-.V. No. 2169. On Mat rock at low 

 water mark, Agar's Island, Dec, Collins. 



PETROSIPHON Howe. 



P. u>haeren8 Howe, 1905, i». 248, PL XV; Collins, L909, p. 375; 



P. I). -A.. No. 2073. Forming a closely attached crust in pools at 



Harris Hay, March. Hervey. 



Steuvea Sonder. 



S. ramosa Di.kic L874a, j). 316; Murray & Boodle, L888, p. 280, 

 PL XVI, fig. 3; Collins, L909, p. 377. This species was described 

 from specimens collected by Moseley with the Challenger Expedition; 

 there is no record of it since, cither here or elsewhere. 



