2. Amphiroa ste llig e r a (Lamarck; Harv. Ner. Austr. p. 9 6 ; J . Ag. Sp. Alg. ii. p. 589).
H a b . Commou on Amphiholts antárctica.
D is tiu b . Australia.
3. Amphiroa W a rd ii (Harv. Ner. Austr. p. 99. t. 38).—Artbrocai-dia Wardii, Aresch. in J. Ag.
Sp. Alg. ii. p . 551.
H a b . Five-mile Bluff, near Georgetown, R . Gunn.
D is t r ib . South a n d east coasts of Australia.
4. Amphiroa (Cheilosporum) eleg ans (Hook. fil. et Harv. Ner. xVustr. p. 101. t. 3 8 ; J . Ag.
Sp. Alg. ii. p. 546).
H a b . Five-mile Bluff, Gunn.
D is te ib . Native of New Zealand and New South Wales.
Gen. LX. CORALLINA, Linn.
(Lamoui-. Cor. Flex. p. 375. Harv. Ner. Austr. p. 108. J. Ag. Sp. Alg. ii. p. 560.)
1. Corallina officinalis (Linn.; Harv. Ner. Austr. p. 104; Harv. Phyc. Brit. t. 2 2 2 ; J. Ag. Sp.
Alg. ii. p. 562).
H a b . At Five-mile Bluff, and at Browu’s River, R . Gunn.
D i s t r ib . Native of the Northern aud Southern Oceans.
Geu. LXI. JANIA, Lamour.
(Lamour. Cor. Flex. p. 266. Ilarv. Ner. Austr. p. 104. J. Ag. Sp. Alg. ii. 553.)
1. J an ia Cuvieri (Dene.; Harv. Ner. Austr. p. 105; J . Ag. Sp. Alg. ii. p. 572).
H a b . Rocky sea-shores.
D i s t r ib . Native of New Holland aud New Zealand.
2. J an ia micrarthrodia (Lamour.; Harv. Ner. Austr. p. 107 ; J. Ag. Sp. Alg. ii. p. 555).—J.
tenuissima, Sond. Earv. Nei-. Austr. t. 40.
H a b . On Alga, iu tide-pools, common.
D i s t r ib , Australia generally.
Gen. LX II. MASTOPHORA, Dene.
(Dene. All. Sc. Nat. 1842, vol. ii. p. 126. Harv. Ner. Ausü-. p. 108. J. Ag. Sp, Mg. ii. p. 525.)
1. Mastophora canalicnlata (Harv.) ; fronde bi-triunciali flabelliformi fastigiata multipartita,
segmentis digitato-multifidis, laciuiis linearibus subtus canaliculatis lævibus rubris supra convexis transversim
zonatis, apicibus parum dilatatis obtusis margine piano, ceramidiis infra apices dense aggregatis.—
Mastophora, n. sp. ?, Earv. Alg. Aust. Exsic. n. 443.
H a b . Tasmania, C. Stuart.
D i s t r ib . Coast of Victoria, a t Port Fairy, W. U. H.
Fronds 2-3 inches high, flabelliform and fastigiate, deeply cut into innumerable narrow-linear laciuiæ, about
a line or a line and a half in width, fiat and somewhat midaibbed in the lower portion of the frond, convex above
and channeUed on the lower surface in the upper portion. Principal segments 4 or 5, flabellato-digitate, multitid,
their divisions irregularly di-, tri-, or polychotomous. Apices not much expanded, blunt, with a flat margin. Colour
of both surfaces a deep dull-red. Conceptacles heraispherica], several closely clustered together near the tops of
tlie branches.
This appears to be a distinctly-marked species.
Gen. LX III. MELOBESIA, Lamour.
(Lamour. Cor. Flex. p. 313. Haiv. Ner. Austr. p. .—Melobesia et Lithotharnnkm, Auct.
Aresch. in .T. Ag. Sp. Alg. ii. p. 519.)
Several forms (we can hardly call them species) referable to this group occur on the rocky coasts, but tliey
have not yet been carefuUy collected, The minute kinds, M. membranacea, -¥■. farinosa, M. verrucata, M. puslidaia,
and M. Patena, are pariisitical on several Alga, on Zostera, etc.
T r ib e V. SPH/EROCOCCOIDEA?.
Gen. LXIV. DELESSERIA, Lamour.
(Grev. Alg. Brit. p. 71. Haiv. Ner. Austr. p. 114, J. Ag, Sp. Alg. ii. p. 811 .— Hemlneura, Harv.
Ner. Austi-. p. 116. FI, N. Zeal. p. 240.)
1. D e le sse r ia L y a llii (Hook. fil. et Harv.; Fl. Ant. ii. p. 471. t, 1 7 6 ; J , Ag. Sp. Alg. ii.
p. 693; Harv. Ner. Austr. p. 114).
H a b . In the Tamar, especiaUy at Point Rapid.
D i s t r ib . Falkland Islands and Kerguelen’s Land.
2. D e le sse r ia Tasmanica (F. Muell.); fronde costata foliis a costa prorumpentibus ramosa,
foliolis lineari-oblongis basi et apice obtusis venis pellucidis a costa pinnatim abeuntibus uotatis, cystocarpiis
sorisque tetrasporarum in sporophyllis propriis a costa exeuntibus evolutis. (Tab. CXC. B )
H a b . In the Tamar, at and above Georgetown. Mso at Port Arthur.
Primary fronds 1-2 inches long, half an inch wide, very obtuse at each eud, membranous, enthe, traversed by
a strong, cylindrical midrib, the membrane marked witli pellucid strife lamiiing obliquely from the midrib to the
margin. By continuous hypophyUous brauclung, the compound frond at length beeomes 6 -8 or 12 inclies long,
and as much in expansion, and is excessively branched and bushy, consisting of oblong, obtuse leai-es similar to
that of the primarj- frond. The leaves are frequently opposite. Colour a full carmine-lake. Substance membranaceous,
resisting tiic action of fresh-water. Botli cystocaips and tetraspores are borne in minute accessory froncllets
that s])ring fi-om tlie midribs of the larger leaves.
A handsome and well-marked species. It most resembles luxuriant specimens of D. ruscifoUa, but differs
essentially from that speeies by the very different evolution of the fructification. The frond is also of a much firmer
substance, and adheres less strongly to, paper.—P la t e CXC. P. Fig. 1, a fi-ond, the natural size; 2, spore-leaf,
with tetraspores; 3, a tetraspore; 4, spore-leaf with couceptacle; 5, section of couceptacle:—the latter figures
3. D e le sse r ia crassinervia (Mont. Pol. Sud, p. 164. t. 8 . f. 1; Harv. Ner. Austr. p. 115; J.
Ag. Sp. Alg. ii. p. 694).
H a b . Sullivau’s Cove, Dr. Lyall.
D i s t r ib . Antarctic Coasts and New Zealand.
4. D e le s s e r ia ? L eprieurii (Mont. An. Sc. Nat. ii. Ser. xiii. p. 196. t. 5. f. 1 ; Ilarv. Ner. Austr.
p. 116; J . Ag. Sp. Alg. ii. p. 682; Harv. Ner. Bor. Amer. ii. p. 98. t. 22 C).
H a b . Abuudant on tidal rocks near the mouth of the Tamar.