INDEX 



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

 names of Authors discussed in the text. 



aboral pole, 2 

 Actinians, 19 

 Agassiz, A., 2 

 Agassiz, L., 2 

 Alcinoe, 21 

 Allman, 2 

 ampullae, 4 

 Antliomedusae, 13 

 Anthozoa, 15 

 Arachnactis, 15 

 axis, 2 



balancers, 5 

 balancing organ, 6 

 Beroe, 23 

 Beroidae, 6, 22 

 Bethe, 5 

 blastopore, 10 

 Bdina, 9, 12, 21 

 Bolinulae, 21 

 Bolinopsis, 21 

 breeding season, 9 

 Brown, P., 1 



Cfcllianira, 20 

 Callianirinae, 20 

 Calynuna, 21 

 Calymmklae, 21 

 Cestidae, 6, 21 

 Crstiiidea, 21 



C/'.SV«.'!, 21 



('haniisso, 2 

 Charistepliane, 9, 20 

 Chun, 2, 8, 10, 12 

 Coelentera, 12, 16 

 Coeloplana, 16-19, 22 

 combs, 2, 6, 17 

 costae, 2, 6 

 t'toiaria, 13, 14 

 ctenes, 2 



Clenoplana, 16-19, 22 

 Cydippidae, 6 

 Ci/dippulea, 19 



Deiopea, 9, 17, 21 

 iJeiopeidae, 21 

 development, 9-12 

 Bissogony, 12 



Eleutheria, 15 

 embole, 10 

 embryo, 10 

 enteron, 4, 19 

 eolidiforni appendages, 

 epiblast, 10 

 epithelium, 8 

 Eschscholtz, 2 

 Eucharidae, 21 

 Eucharis, 9, 12, 21 

 EucMora, 9, 20 

 Eiip/iikam is, 20 

 Ei(ramphaea, 21 

 Euramj)haeidae, 21 

 excretory pores, 4 



Fol, 2 



Gaimard, 2 



gastrovascular canals, 4 

 — cavity, 15 

 gastrula, 12 

 Gegenbauer, 2 

 gelatinous matrix, 8 

 gland cells, 8 

 gonads, 4, 9 



Ilaeckfl, E., 13 

 JI(ipn/ia, 21 

 HiTtwig, R., 5 

 histology, 8 

 Iformiphi>ra, 2, 20 

 liypoblast, 10 



Infundihidiiin, 2 

 interstitial tissue, 8 



Kolliker, 2 



Korotneff, 16 

 Kowalevsky, 2 



Lnmpetia, 17, 20 

 Lang, A., 12, 16 

 larvae, 12 

 lasso-cells, 8 

 Lesueur, 2 

 Lesueuria, 20 

 Lesueuridae, 20 

 Leuckart, 2, 15 

 Lokitae, 6, 20 

 locomotiou, 6 

 Lophoctenia, 20 



macromeres, 10 

 Martens, F., 1 

 Medusae, 13 

 Mertcnsidae, 20 

 Mertensinae, 20 

 mesenchyme, 19 

 mesoblast, 9, 10 

 nietamorpliosis, 12 

 Metschiiikoff, 2, 9, 16 

 micromeres, 10 

 Mnemla, 21 

 Mnemiidae, 21 

 Mtiemio2)sis, 21 

 mouth, 2 

 musculature, 8 



Nemertines, 19 

 nephridia, 13 

 nerve stinmli, paths of, 6 

 nervous system, 5 

 Xuda, 22 



Ocyroe, 21 

 Ori/riiid(ie, 21 

 oral jiole, 2 

 otoliths, 5 

 ova, 9 



