« OLUNS WD HERVEY. 



\-< ocTCLua Magnus. 



A. orbu i labia J. Ag. Magnus, l s 7l, ]>. 73; P. B.-A., No. i^7>; 

 Myrionema orbiculare J. G. Agardh, 1848, p. L8. On marine phanero- 

 gams in -hallow water. Cooper's [aland, April, Collins. Probably 

 elsewhere, l>ut easily overlooked. 



IAm.i.y SPHACELARIACEAE. 

 Sphacelahia Lyngbye. 



1. Propagula with broad body. 

 1. Propagula slender, branching. 



2. Filaments mostly 30-40 m diam.; lateral cell of propagulum not divided. 



3. 8. tribuloidee. 



2. Filaments mostly 55-75 n diam.; lateral cell of propagulum divided into 



two. 4. S. Qovae-hollandiae. 



3. Propagulum with three rays from summit of pedicel. 2. 8. fusca. 



3. Propagulum with two rays from summit of pedicel. l. 8. furcigera. 



1. S. furcigera Kutzing, 1855, p. 27, PI. CX; Sauvageau, 1901, 1 

 p. 14."), fig. 35. On small spider crab, Hungry Bay, July, on floating 

 Turbinaria, Dec, Collins; with propagula. 



2. S. fusca (Huds.) Agardh, 1828, p. 28; Sauvageau, L902, p. 206, 

 fig. 4:^; Conferva fusca Hudson, 17 ( .»s, p. 602. Spanish Rock, April, 

 Hervey, with propagula. 



3. S. tribuloides Mene^hini, 1840, p. 2; Sauvageau, 1901, p. 123, 

 28 29; P. B.-A., No. 1923. Not uncommon in shallow rock pools 



and on various submerged substances. In pools, South Shore, Far- 

 low; Harris Hay, Feb., March, Dec.. Gravelly Hay, Jan., Hervey; 

 on Galaxaura, St. David's, April, Collins. Pound once on twigs of 

 Tamarisk that drooped into the water of Harrington Sound. Propa- 

 gula common; no sporangia seen. 



4. S. novae-hollandiae Sonder, 1845, p. 50; Sauvageau, 1901, 

 p. l.':>7, fig. 33. In small quantity, among - s '. tribuloides, Spanish Rock, 



9 In references to this work, the page given is that of the completed and 

 rate issue; the date, however, ia thai of the original publication in the 

 Journal de Botanique. 



