[1922] 
IV. Coelenterata. 
Cod. & 
Behaviour of anemones from inter- 
tidal habitat ; Crozier, 25. 
Commensalism and symbiosis. — 
Siphonophora and Zooxanthellae, Kus- 
kop, 63 ; Cyanea and Siphonactinia, 
Verrill, 138 ; Spongodes, Solenocaulon 
and gorgonid commensals, Hornell, 
55 ; Bolocera and Crustacea and 
Annelida, Verrill, 138 ; Anemones 
and crabs, Cotte, 24 ; Hermit crab, 
Sugar lia and Nereis, Orton, 98 ; 
Sugar tia and Pagurus, Poulton, 109 ; 
Anemone and Dorippe, Hornell, 55 ; 
Hydroida , Goetsch, 35, 42 ; Isopods 
and Obelia , Stechow, 123 ; Peridinians 
.and Velella, Hovasse, 56; Green 
Hydra fusca, Goetsch, 37, 38. 
VARIATION AND PHYLOGENY. 
“ Modification species ” ; Thomson, 
134. 
Phylogeny. — Polypodium, LipiN, 69 ; 
Siphonophora, Moser, 84, 86, 87, 90 ; 
Stomolophus, Stiasny, 131 ; Grapto- 
litoidea, Elles, 26 ; Spo?igodes, Siier- 
riffs, 119. 
DISTRIBUTION. 
1 .—GEOGRAPHICAL. 
A. — Marine. 
Atlantic (including Mediterranean). — 
Madreporaria and the 200 m. isobath, 
JoubiN, 60. — North Sea, Coelenterata, 
Burnley, 18; Hydroida, Billard, 10. 
— N. America, Actiniaria, Verrill, 
138 ; Alcyonaria, Verrill, 137 ; 
Neritic Coelenterata, Bigelow, 6. — 
Bermudas, Hydroida, Bennitt, 4. — 
West Indies, Actiniaria, Watzl, 141. — 
Mediterranean, Hydroida, Babic, 2 ; 
Neppi, 91 ; Hydromedusae, Pell, 104 ; 
Siphonophora, Neppi, 92. 
Indian Ocean. — Euryhaline Coel- 
enterata, AnnaNdale, 1 ; Hydroida, 
Jarvis, 59; Agariciid corals, Horst, 
53 ; Endopacliys from Perisan Gulf, 
Hickson, 52 ; West Australian Sea- 
pens, Hickson, 49 ; Antipatharian 
from Nicobar Is., Pax, 100. 
Pacific Ocean. — Scyphomedusae, 
Stiasny, 132 ; Zoantharia from Juan 
Fernandez and Easter Island, Carl- 
gren, 20 ; Semperina sp. n. from Juan 
Fernandez Is., Molander, 79; Philip- 
pine species of Alcyonium, Lutt- 
SCHWAGER, 71. 
Southern Ocean. — Actinians of Ger- 
man and French South--polar Expedi- 
tions, Pax, 103; Hydroida of Valdivia 
Expedition, Stechow, 122. 
Arctic Ocean. — Canadian Arctic Alcy- 
onaria, Verrill, 137 ; Canadian Arctic 
Acliniaria Verrill, 138 ; Ingolf- 
Expedition Actiniaria, CarlgreN, 19 ; 
“ Poseidon ” Hydroida from Barents 
Sea, Scheijring & Mielck, 114 r. 
“ Poseidon ” Actiniaria from Barents- 
Sea, Pax, 101. 
B. — Fresh Water. 
Limnocodium from Japan, Oka,. 
95, 98 ; Limnocodium in Parc de la. 
Tete-d’Or de Lyon, Pelosse, 105; 
Coelenterata in Kentucky, U.S.A.,. 
Garman, 33 ; Hydra in Lake Erie,, 
Clemens, 23. 
2.— GEOLOGICAL. 
Cainozoic. — Koch, 61 ; Corals front, 
Peru, Vaughan, 136 ; Eocene and 
Oligocene Corals from Italy, Checchia- 
Rispoli, 22 ; Corals from Paleocene 
deposits in Denmark and Skaane,. 
Nielsen, 92. 
Mesozoic. — Danian fossil Hydro- 
corallinae, Nielsen, 93 ; Corals from 
Senonian deposits in Denmark and! 
Skaane, Nielsen, 92; Neo-Cretaceous 
Tripolitanian Corals, -Zuffardi-Comer- 
ci, 146 ; Hettangian Anthozoa, Brun 
& Vedel, 15. 
Palaeozoic. — Corals of China ; Gra- 
bau, 45 ; Corals of Southern China,. 
Yabe & Hatasaka, 144 ; Corals front 
Tonkin, Mansuy, 72 ; The Pottsville 
coral of Ohio, Morning star, 81 ; 
Lower Carboniferous corals from Barin- 
di, Benson, 5 ; Devonian corals from, 
Annam, Mansuy, 73 ; Mid-Devonian 
corals from Tonkin, Mansuy, 74 ^ 
Mid-Devonian corals, W edekind, 142 ; 
Corals from N.S.W., Etheridge, 29; 
A new Arenician Graptolite, Elles,. 
26a ; World-wide distribution of 
Monograplus priodon, Hundt, 58; 
Ordovician graptolite beds in N. S. 
Wales, Harper, 46 ; Anthozoa from 
L. Ordovician of Ottawa, Wilson,. 
143 ; Graptolites from Southland, N.Z., 
Park, 99 ; Archaeocyathinae from 
Antarctic, Gordon, 43 ; Anthozoan. 
fauna of Permian of Timor, Gerth, 34~ 
