.552 
Dr. W. H. Harvey’s Account of the Marine Botany of 
210. SOLIEEIA n. sp. ; fronde dendroidea (1-2 pedali) robusta decomposito-ramosissima ; 
ramis alternis sparsisve approximatis pluries alterne compositis ; ramulis ultimis (1-2 unci- 
alibus) linearibus acutis basi setaceo-attenuatis ; cystocarpiis in ramulis semi-immersis. 
Fremantle and King George’s Sound (150). A noble species, much, more robust and branch- 
ing than S. chordalis, and readily known, even in fragments, by the acute, but not acuminate 
apices. 
211. Hypnea musciformis, Ag. King George’s Sound and Eottnest, common (16). 
212. Hypnea episcopalis. Hook, and Harv. Eottnest, rare (252). My specimens have fruit of both 
kinds, further establishing this species, whose crosier-like tendrils and scarlet colour are 
truly episcopal. 
213. Hypnea seticulosa, J. Ag. Eottnest and King George’s Sound (70). 
214. Hypnea divaricata, J. Ag. King George’s Sound (69). 
215. Hypnea sp. . . . Eottnest, on the reefs (253). y , 
s t Not ascertained. 
216. Hypnea sp. . . . Eottnest, on the reefs (222). J 
Order VIII CH^TANGIEAl. 
Hennedya, nov. gen. Caulis teres, ramosus; ramis apice in frondem planam dichotomam 
stratis tribus contextam dilatatis ; stratum medullare e filis tenuissimis anastomosantibus 
densissime inter textis; intermedium cellulis magnis vacuis uniseriatis; peripliericum cellulis 
minimis verticaliter ordinatis compositum. Cjjstocarpia hemispheerica, elevata, umbilicata, 
demum poro pertusa, ad apices laciniarum sessilia, fascicules sporarum secus parietes loculi 
dispositos foventia. Tetrasporce .... Alga australis, fusco-rubra, rigide membranacea, 
multoties dichotoma ; laciniis crispatis lato-linearibus apice emarginatis. 
217. Hennedya crispa, n. sp. ; Garden Island and Eottnest, abundant (168). Eeadily known from 
Chcetangium by the single row of large cells forming the intermediate stratum of the frond, 
and by the completely external fruit. It grows in large tufts, often a foot in diameter. The 
frond is deep red when growing, and remarkably crisped and curled. The cystocarps are 
formed in a little notch at the extreme end of the laciniie. The generic name is given in 
honour of Me. Eoger Hennedy, of Glasgow, a most able and indefatigable investigator of 
the Algal of the West of Scotland. 
Order IX.— HELMINTHOCLADIEA:. 
218. IlELMiNTnoEA divaricattt, J. Ag. Eottnest and King George’s Sound in winter, common 
(234). 
219 . Liagora viscida, Ag. King George’s Sound and Cape Eiche, common (8). 
220. Liagora distenta, Ag. Cape Eiche, rare (313). 
221. Liagoea Cheyniana, n. sp. ; fronde gelatinosa compressa siccitate subcanaliculata dichotoma 
ramosissima ; ramis erecto-patentibus argenteis villo purpureo tomentosis, apicibus divari- 
catis; filis periphericis liberis cylindraceis furcatis. At Cape Eiche (294). Frond 6-8 
