xl 
LIST OF FAMILIES, GENERA, AND SPECIES, IN THE THREE COLOUR GROUPS, 
Family 15.~HELMINTH0CLADIE-® . — Gelatinous ; cylindrical ; branched. 
One fruit. Globular masses of spores 
immersed. 
SciNAiA ; ^ furcellata. 
Nemaleon;'!' multifidum. 
Helminthora ; divaricata. 
Helminthocladia; J purpurea. 
^ Formerly Ginnania furcellata (Fig. 226). 
+ Formerly Dudresnaia divaricata (Fig. 221). 
I Formerly Nemaleon purpureiim (Fig. 217). 
Family le.-RHOBYMENIACEjE . — Delicately membranaceous ; flat ; compressed, or 
thread-shaped. 
1. Masses o/spores in external cases (capsules), 
or half-immersed. 
2. Tetraspores variously dispersed. 
WoRMSKioLDiA ; * sauguiuea. 
Plocamium ; coccineum. 
Stenogramme ; interrupta. 
Rhodophyllis ; f bifida. 
Euthora ; J cristata. 
Rhodymenia ; palmetta ; palmata. 
Cordylecladia ; § erecta. 
* Formerly Delesseria sanguinea (Fig. 169). 
+ Formerly Rhodymenia bifida (Fig. 183). 
J Formerly Rhodymenia cristata (Fig. 184). 
§ Formerly Gracilaria erecta (Fig. 168). 
Family l^.-SPYEIDIACEiE . — Soft; membranaceous; thread-like; fringed with 
jointed branchletQ&w^, 
1 . Spores in external, closed cases (capsules). 
2. Tetraspores, external. 
Spyridia; filamentosa. 
Family 18.-CEYPTONEMIACE.J].- Of every sort of substance and habit. The 
internal structure consisting wholly, or in 
part, o/ jointed threads, compacted toge- 
ther by gelatine. Or some of the mem- 
branaceous species made up of many-sided 
cells similarly compacted. 
1 . Masses o/spores inexternal cases (capsules), 
with or without an opening. 
2. Tetraspores chiefly immersed. 
Phyllophora; rubens, membrani folia, Brodiiei, palmettoides. 
Gymnogongrus ; Griffithsia^, Norvegicus."*' 
Aitnfeldtia ; j* plicata. 
^ Formerly Chrondrns norvegicus (Fig. 203). 
I- Formerly Gymnogongnus plicatns (Fig. 211). 
