544. ALGÆ NOVA ZELANDLE. 
81. Rhodomenia variegata, Mont. Halymenia variegata, Bory, 
in Dup. Voy. t. 14. 
Has. Bay of Islands, Lyall. 
82. Rhodomenia lusoria, Grev. in Hook. Comp. Bot. Mag. 2. 
p. 329. 
Has. East Coast, R, Cunningham. 
83. *Rhodomenia corallina, Grev. Sph. corallinus, Bory, in 
Dup. Voy. p. 175. t. 16. 
Has. New Zealand, Lesson. 
84. Rhodomenia dichotoma ? nobis, in Fl. Antarct. t. 72. f. 1. 
Has. New Zealand, Lyall. 
A very imperfect scrap, possibly belonging to this species. 
85. Rhodomenia Montagneana, nobis; stipite brevi crasso, 
fronde primaria oblongo-cuneata basi attenuata furcata 
simplicive carnoso-membranacea sanguinea madefacta fra- 
gillima frondes secundarias marginales et apicales cuneatas 
basi attenuatas furcatas dichotomasve emittente, coc- 
cidiis hemisphericis prominulis numerosissimis per totam 
frondem sparsis marginatis, tetrasporis minutis oblongis 
zonatim quadripartitis in peripheria nidulantibus. 
Has. Bay of islands, Lyall, Hooker. 
Primary frond 4-8 inches long, frequently broken off at 
the apices and emitting from the truncate extremity and 
along the lateral margins, innumerable cuneate slightly sti- 
pitate fronds ; the smaller of which, from one to four inches 
in length, are simple or merely emarginate, or slightly bifid, 
at the apex ; the larger, 6-10 inches long, are forked, or once; —— 
twice, or thrice dichotomous. All are cuneate at base, and - 2 
more or less stipitate; they vary in breadth from 4-12 - | 
inches. The axils are obtuse, and the apices acute. The 
substance is thickish, more fleshy than membranous, and when 
moistened after having once been dried it becomes extremely —— 
fragile, and if allowed to remain but a short time in fresh - 
water will completely decompose. The colour is a fine blood — 
red. The coccidia are extremely abundant, thickly dotted — 
over the surface and fringing the margin, and (when dry) - 
furnished with a broad pellucid limbus. In this respect, and — 
