539 
the Colony of Western Australia. 
70. Chonduia dasyphylla, Ag. King George’s Sound, August (293). 
71 . Chondeia sedifolia, Harv. Ner. Bor. Amer. G. zosteTicola, and C. Curdicana, Harv., MS. 
Common on Zostera leaves, King George’s Sound, and Eottnest (29). 
72 . Chondeia corynepltora, n. sp.; frondetereti succosa siccitate rosea robusta quoquoversum ramo- 
sissima; ramis indivisis patentibus e latere bis terve ramosis; ramulis oppositis, fasciculatis, 
V. sparsis, ssepius incurvis cylindraceis basi constrictis obtusissimis. Cape Riclie and Garden 
Island (114). Much more robust than C. dasyphylla. It soon breaks to pieces in fresh water, 
by which character and others it is readily known from the following. 
73. Chondeia verticillata, n. sp. ; fronde tereti succosa siccitate badia bis-terve umbellatim divisa; 
ramulis fasciculato-verticillatis saccatis oblongis obtusissimis basi constrictis ; tetrasporis in 
ramulis nidulantibus. Garden Island, rare (273). 
74 . Chondeia Uinhellula, n. sp.; fronde pusilla (^-1 unciali) simplici saccato-clavata apice ramulis 
5-1 0 conformibus umbellatim coronata ; ramulis nunc apice umbellulatis; ceramidiis ovatis 
sessilibus; tetrasporis sparsis (190). Eottnest, on Zostera leaves. Avery curious and pretty 
little species. 
75. Chondeia lanceolata., n. sp. ; fronde pusilla (1-2 unciali) compressa cartilaginea alterne ramosa 
sub-disticha ; ramis ramulisque alternis basi et apice attenuatis acutis ; ceramidiis ovatis 
pedicellatis ; tetrasporis sub apicibus ramulorum congestis. Eottnest, on Zostera leaves 
(191). 
76. Leveillia jungermannioides. L. Schimperi, and L. gracilis, Dne. Abundant on a variety of 
Algce at Fremantle, Garden Island, and Eottnest (123). 
77 . PoLYZONiA Sonderi, Harv. Ner. Austr. Garden Island, on Fucoids (284). 
78. V oim,o^iA fiaccida, n. sp.; caule primario repente; ramis erectis simplicibus ramosisve tenuis- 
simis flaccidis oligosiphoniis ; foliis (v. ramulis) alternis pectiniformibus, pectinis lacinulis 
5-6 filiformibus articulatis monosiplioniis acutis; stichidiis arcuatis rostratis. On Fucoids, 
King George’s Sound, Garden Island, and Eottnest. Much more slender, and of softer tex- 
ture than P. Sonderi, and readily known by its one-tubed lacinul® (34). 
79 . Polysiphonia Hystrix, Harv. Ner. Austr., t. 14. Cast ashore. Garden Island (121). 
80. Polysiphonia Mallardice, Harv. Ner. Austr., t. 13. With the preceding (117). 
81. Polysiphonia hreviarticulata, Ag. Abundant on the reefs, near low water, Eottnest (188). 
82. Polysiphonia iJafunewsM, Mont. ( ?) With the preceding, profusely common. More robust 
than the American plant, but otherwise very similar (118). 
83. Polysiphonia infeslans, n. sp. ; pallida, siccitate fuscescens ; frondibus (2-3 uncialibus) carti- 
lagineis chartie arete adhserentibus setaceis sursum attenuatis pellucide articulatis ramosis- 
simis; ramis patentibus pluries alterne v. vage divisis ramulisque conspersis; ramulis capil- 
laribus simplicibus patentibus; axillis latis; articulis 4-siphoniis subtorulosis, inferioribus 
diametro brevioribus, superioribus sequalibus v. sublongioribus. Common on Polyphysa 
peniculus, at Princess Eoyal Harbour, King George’s Sound. It has the oi P . jibrillosa, 
but is more nearly allied to P.Ilarveyi and P. Binneyi than to any other that I remember 
( 22 ). 
84. Polysiphonia mollis, Harv. Ner. Austr. On Zostera, at Fremantle (120). 
4 A 
VOL. XXII. 
