Ceramium 
acanthonotum, 8, Ioo. 
botryocarpum, 41, 99. 
cilatum, 99. 
circinatum, 43, 99. 
decuryens, 99. 
Deslongschampsii, 56, 99. 
diaphanum, 98. 
echionotum, 99. 
fastigiatum, 43, 98. 
flabelligerum, 99. 
gracillimum, 98. 
nodosum, 98. 
rubrum, 49, 87, 99, I17. 
strictum, 40, 98. 
tenuissimum, 98. 
Chaetomorpha, 5, 32, 50, 122. 
area, 51. 
crassa, 39, 51. 
linum, 50, 51. 
litorea, 50. 
melagonium, 51. 
tortuosa, 50. 
Chaetopteris, 67, 125. 
plumosa, 67. 
Champia, 85, 139. 
parvula, 85. 
Chantransia, 114. 
emergens, 115. 
endozoica, 114. 
Chilionema, 69, 125. 
Nathaliae, 69. 
Chondria, 83, 134. 
dasyphylla, go. 
tenuissima, 89, I16. 
Chondrus, 80, 140. 
*=4CHiSPUS, 6,9; 10; SO, 61, 103. 
Norvegicus, 81: 
Chorda, 71, 126. 
filum, 57, 58, 71. 
lomentarvia, 59. 
tomentosa, 71. 
Chordaria, 64, 70, 127. 129. 
divaricata, 40, 70. 
flagelliformis, 5, 14, 56, 70. 
Choreocolax, 79, 135. 
Polysiphoniae, 40, 79. 
Chrysymenia, 85. 
clavellosa, 85. : 
vosea var. orcadensis, 85. 
Chylocladia, 9, 85. 
articulata, 85. 
clavellosa (see Chrysymenia). 
parvula, 85. 
kaliformis, 60, 85, 139. 
kaliformis var. squarrosa, 86. 
ovalis, 86. 
ovatus, 8, 86, 139. 
Cladephora, 5, 7, 32, 52, F19; 122. 
albida, 53. 
Fig. 58. 
150 
Cladophora 
albida var. refracta, 53. 
arcta, 53. 
flavescens, 53, 76. 
flexuosa, 53. 
fracta, 53. 
fracta var. flavescens, 39, 53. 
gracilis, 53. 
Hutchinsiae, 52. 
laetevirens, 52. 
lanosa, 54. 
pellucida, 52. 
refracta, 53. | 
rupestris, 8, 9; 32, 52,04, 30. 
rupestris var. nuda, 52. 
uncinalis, 54. 
utriculosa, 52, 54. : 
Cladostephus, 8, 67, 125. 
spongiosus, 5, 8, 9, 66, 67. 
verticillatus, 5, 07. 
Codiolum, 45. 
gregarium, 39, 45. 
Petrocelidis, 39, 45. 
Codium, 55,,220; 425: 
adhaerens, 39, 55. 
amphibium, 39, 55. 
mucronatum var. atlanticum, 
58, 87. 
tomentosum, 5, 55, OI. 
Colaconema, 77, 130. 
reticulatum, 40, 77, I1T4. 
45- 
Colpomenia, 59. 
sinuosa, 40, 41, 59, 126. 
Compsothamnion, 97, 133. 
thuyoides, 43, 97. 
Conferva, 50. 
aevea, 51. 
bangioides (see Urospora). 
collabens (see Urospora). 
isogona (see Urospora). 
linum, 51. 
litovea, 50. 
melagonium, 51. 
sutoria, 51. 
tovtuosa, 50. 
Youngana (see Urospora isogona). 
Corallina, 3, 9, 103. 104, 129. 
officinalis, 6, 7, 8; 2%, G9,m@as 
to4. Pls. IU, VeVi Vee 
tubens, 104. 
rubens var. corniculata, 104. 
squamata, 4I, 104. 
Cruoria, IOI, 131. 
pellita, 101. 
Cruoriella, IoI, 131. 
Dubyi, ror. 
Cutleria, 72, 128. 
multifida, 72. ~ . 
Figs. 48, 53 
Fig. 
