Gen. CXX. ULYA, Ag.
(Ag. Syst. xxxii. Grev. Alg. Brit. p. l l l .— Ulva, Phycoseris, and Cramla, Kiitz.)
1. U l v a l a t i s s im a (Lin. Fl. Suec. p. 4 3 3 ; Ag. Sp. Alg. i. p. 407 ; Harv. Phyc. Brit. t. 171;
Kütz. Sp. Alg. p. 474).
H a b . In the Tamar, Derwent, etc.; and probably all along the coast. Generally diffused.
Gen. CXXI. OEDOGONIUM, Link.
(Kiitz. Sp. Alg. p. 364.— Vesiculifera, Hass. Br. Fr. W. Alg. p. 195.—Tiresias, Bory.)
1. OE d o g o n i u m m o n i l e (Berk, et Harv.) ; filis basifixis brevibus tenuissimis strictiusculis, articulis
cylindraceis hyalinis diametro 6 -S-plo longioribus, sporidiis seriatis globosis terminalibus v. in medio fill
moniliformiter intumescentibus demum sanguineis.— (T a b . CXCVI. B.)
H ab. In fresh-water, parasitical ou water-plants, Gunn.
Filaments g inch to 1 inch long, about g-ggg inch in diameter, covering the leaves and stems of water-plants
with a thick, rillous, pale-green coating. The articulations are cylindrical, either colourless or tinted with a pale
green, and containing a few medial granules, dispersed in drying. The sporidia are globose, 4-5 times the diameter
of the filament, and formed in moniliform strings of 4-8 each, either at the end or iu the middle of the filament ;
the generating cell is conoidal, full of yellow-green endochrome ; the sporidia are at first green, afterwards of a deep
blood-red, resembling strings of rubies.—A very beautiful species, perhaps referable to Kiitzing’s genus Allogonium.—
P late CXCVI. B. Fig. 1, the plant, nat. sise; 2, sc
Gen. CXXII. TETEASPORA, Link.
(Ag. Sp. Alg. p. 414. Kiitz. Sp. Alg. p. 225.)
1. T etra spo ra iutricata (Berk, et Harv.); fronde deeomposito-laciniata, laciniis angustissimis
ramosis, ultimis capillaribns intricatis, gonidiis quaternis, maculis ramulorum subuniseriatis.
H a b . In St. Patrick’s Eiver, 1830, Gunn.
The single specimen seen having been dried on paper, and verj' imperfectly displayed, it is impossible to do
more tban guess at its proper form. It seems to be cut up indefinitely into threadlike segments, the lesser ones
containing often but a single row of quatemate gonidia. Mr. Berkeley remarks that it is related to the other
Tetrasporoe much as Monormia is to the Nostocs. It approaches also to Trypothallus. W'e regret that the state of
the specimen forbids its being satisfactorily described or figured. The gonidia are g^gg inch in diameter.
T r ib e V. OSCILLATORIBÆ.
Gen. CXXIII. EIVULARIA, Roth.
(Ag. Syst. p. xix. Harv. Man. and Phyc. Brit.—Physactis, etc., Kütz.)
1. Rivu lar ia n itid a (Ag. Syst. p. 25 ; Wyatt, Alg. Danm. n. 5 0 ; Harv. Phyc. Brit. t. 6 8 ).—
Physactis bullata, spiralis, et lobata, etc., Kiitz. Sp. Alg. p . 332.
H a b . Mouth of the Tamar, Gunn, W. E . H., etc. Pound also at Port Phillip, JF. H. U., and
native of the coasts of Europe.
The Georgetown specimens are of large size, as usual in plants of that locality, but have all the usual
characters of the species.
Gen. CXXIV. BANGIA, Lyngh.
(Lyngb. Hyd. Dan. p. 82. Ag. Syst. p. 25. Harv. Phyc. Brit., etc.)
1. B angia pulch ella (Harv.); filis brevibus basifixis simpUcibus erectis cylindraceis violaceo-roseis
articulatis, articulis diametro brevioribus multistriatis, striis longitudinalibus angustis (demum iu sporidia
mutatis ?).
H a b . Parasite on Zostera. Georgetown, Gunn.
Forming a bright, rosy-purple fringe, 2-3 lines long, on the leaves of Zostera. Externally it resembles
B. ciliaris, but the microscopic character is differeut.
Gen. CXXV. LYNGBYA, Ag.
(Ag. Syst. p. 25. Kütz. Sp. Alg. p. 279. Harv. Phyc. Brit., etc.)
1. Lyngbya fe rruginea (Ag. Syst. p. 73 ; Harv. Man. ed. 2. p. 226 ; Harv. Phyc. Brit. t. 311).
H a b . Georgetown, W. H. M. Native of Europe, in the sea and brackish water.
Gen. CXXVI. CALOTHEIX, Ag.
(Ag. Syst. p. 24. Kütz. Sp. Alg. p. 311. Haiv. Phyc. Brit., etc.)
1. Calothrix infestan s (Harv.) ; parasitica, æruginosa, filis primo decumbentibus alias Algas investieiitibus,
dein ascendenti-erectis brevibus flexuosis obtusis simplicibus v. appositione ramulosis, striis
eudochromatis creberrimis.
H a b . Parasite ou Cladostephus fei-nigineus, at Port Arthur, IV. E . E .
Gen. CXXVII. OSCILLATOEIA, Vauch.
1. Oscillatoria sp .
H a b . In brackish water: at Georgetown, Gunn.
Probably referable to 0. spiralis, Carm., or some allied species, but we confess oui-selves uuable to recognize
the specific characters attributed to the multitudinous book-species of this genus already published, aud are un-
wiUiug to add new names to the Ust. The specimens ai'e not m very good order. No doubt many other “ qiecies”
exist in Van Diemen’s Land.
T e ib e VI. K O Sm C E IKÆ .
Gen. CXXVIII. PEOTOCOCCUS, Ag. Sgst. p . 17.
1. P ro to co c cu s monas (Ag. Ic. Alg. Eur. t. 11 ; Kiitz. Sp. Alg. p. 200).
H a b . On a damp wall near Launceston, Gmn.
Tills agrees very well witli Agai-dli’s figure above quoted.
N a t . O e d . IX. LICHEXES.»
B y the Eec. Churchill Babington, B.D., F.L.S., aud W. Mitten, Eeq., Ä .l.S .
SOBOBDEB I. G T J IX O O A K P I.
T b ib e I. P A EM B IIAC EÆ .
Gen. I. USNE.k, Ach. ei Anctl.
1. U sn ea barbata (Ei-ies, Lioli. Eur. p. 18; B.ab. iu Hook. Fl. X. Zeal, pari 2. pp. 268, 269).
H a b . Abundant everywhere, and iulinitely variable.
• The foUowing Lichens arc tor the most i»rt fouud iu New Zealand as well as in Tasmania. Seference is
accordingly made to the New Zealand Flora for the synonymy under the species here enumerated, when the plant
occurs there also. In that work various remarks on the species, especially on the geographical distribnlion, wiU be
found, which wUl not be repeated in this emimemtlon. The crnstaccons Lichens are deserihed by Mr. Slitleii.—C B