INDEX 



To names of Classes, Orders, Sub-Orders, and Genera ; and to technical terms. 



Abyla, 56 

 Acanthella, 55 

 Acanthocladium, 29, 54 

 Acaulis, 53 

 Acharadria, 53 

 acrocyst, 28, 45 

 Actinogonium, 53 

 actinula larva, 22 

 adradial canals, 6 

 adradii, 4 (Fig. 7) 

 Aegina, 55 

 Aeginella, 33, 55 

 Aegineta, 33, 55 

 Aeginidae, 55 

 Aeginodiscus, 55 

 Aeginodorus, 55 

 Aeginopsis, 35, 55 

 Aeginorhodus, 55 

 Aeginura, 34, 55 

 Aequorea, 24, 54 

 Aequoridae, 54 

 Agalma, 47, 56 

 Agalmidae, 56 

 Agalmopsis, 39, 40, 56 

 Aglaisma, 56 

 Aglantha, 30, 32, 55 

 Aglaopfienia, 23-25 (Fig. 



31), 27, 28 (Fig. 37), 



29, 54 



Aglaoplieniidae, 54 

 Aglaura, 32, 55 

 Aglauridae, 55 

 Aglauropsis, 55 

 Agliscra, 55 

 Allopora, 35-37 (Fig. 43), 



38, 55 



Alophota, 57 

 alternation of generations, 



18 



Amalthaea, 16, 52 

 Ametrangia, 54 

 Amphicaryon, 56 

 Amphicodon, 52 

 Amphinema, 52 

 Amphirrhoa, 56 



ampullae (niedusoid), 36, 



38 



Angela, 57 

 Angdopsis, 57 

 Anisicola, 23 

 Antennularia, 55 

 Anthemodes, 56 

 Aiithomedusae, 11-22, 52 

 Anthophysa, 56 

 Anthophysidae, 56 

 Apolemia, 39, 45, 56 

 Apolemiidae, 56 

 Apolemopsis, 56 

 Archirhiza, 76 

 Arethusa, 57 

 Armenista, 56 

 Astylus, 37, 38 (Fig. 43a), 



55 



Athoralia, 56 

 Athoria, 40, 45, 56 

 Atlioriidae, 56 

 Athorybia, 56 

 ^fo#a, 75 

 Atractylis, 53 

 Auralia, 57 

 Aurelia, 6 (Fig. 7&is), 9 



(Fig. 106), 61, 67, 70, 76 

 Auricoma, 76 

 Auronectae, 56 

 aurophore, 42 

 Aurophysa, 57 

 -4wrosa, 72, 76 

 Azygoplon, 54 



Bassia, 56 

 Bathycodon, 52 

 Bathyphysa, 56 

 Berenice, 26, 54 

 Bi'ineria, 53 

 blastocoele, 22 

 blastostyle, 14 

 blastula, 2, 22 

 BougainvUlea, 11-14 (Fig. 



19), 16-19, 20, 53 

 Bougainvillidae, 53 



brachial canal, 73 

 Brachiolophus, 76 

 bract, 40 



budding of hydroid, 3, 4 

 of niedusoid, 17-19 



Calamphora, 54 

 Calicarpa, 55 

 Calicarpidae, 55 

 Oailitiara, 16, 52 

 C^e, 56 



Ocdycella, 23, 28, 54 

 Calyconectae, 56 

 Calyptoblastea, 53 

 Campaniclava, 53 

 Campanopsis, 23 

 Campanularia, 23, 27, 29, 



54 



Campanularidae, 54 

 Campanulina, 26, 27, 54 

 Cannophysa, 57 

 Cannorhiza, 71-73, 76 

 Cannostomae, 75 

 Cannota, 54 

 Cannotidae, 54 

 Capria, 75 

 Capriidae, 75 

 Caravel! a, 57 



Carmarina. See Geryonia 

 Car mar is, 55 

 Cassiopeja, 76 

 Catablema, 52 

 centradenia, 42 

 centripetal canals, 32 

 Cephea, 76 

 Ceratella, 13, 53 

 Ceratelladae, 53 

 Charybdaea, 61, 65, 66, 75 

 Charybdeidae, 75 

 Chirodropidae, 75 

 Chirodropus, 65, 66, 75 

 Ckiropsalmus, 75 

 Chrysaora, 67 (Fig. 6), 68, 



71, 74 (Fig. 146), 75, 76 

 Cionistes, 53 



