270 



INVERTEBRATE ZOOLOGY 



Filaria, 131, 133, 136 



blood inhabiting, 131 

 Filibranchia, 201 

 Filopodia, 3S 

 Finger-nail shells, 191 

 Fish-lice, 213 

 Fission, 7, 25, 27 

 Fissurella, 196, 201 

 Flagella, 30, 83 

 Flagellated chambers, 83 

 Flame cells, 74, 105, 125 

 Floscularia, 140, 143 

 Floscularida, 143 

 Flukes, 111 

 Follicle cells, 9 

 Foot of Mollusca, 184 

 Foraminifera, 39, 40, 41, 57 

 Forcipulata, 182 

 Fredericella, 164 

 Front, 239 

 Funiculus, 160, 161 

 Funnel of Ctenophora, 101 



G 



Galeodes, 234 

 Gametes, 8, 21 



specialization of, 9 

 Gametoblast, 45 

 Gametogenesis, 11 

 Gammarus, 222, 223 

 Ganglia, 67, 77 

 Gastrocopta, 201 

 Gastrodiscus, 126 

 Gastropoda, 192, 201 

 Gasterostomata, 125 

 Gastraea theory, 255 

 Gastral tentacles, 95 

 Gastroliths, 220 

 Gastrotricha, 138, 142, 143 

 Gastrovascular system, 70, 89 

 Gastrula, 15 

 Gelasimus, 223 

 Gemmules, 8, 81, 84 

 Genae, 239 

 Genital claspers, 243 

 Genital plates, 170 

 Genital rachis, 176 

 Genitalia, 243 



Geodia, 87 



Geologic chronology, 6 

 Geonemertes, 126 

 Geophilus, 233, 234 

 Gephyrea, 156, 158 

 Germ band, 247 

 Germ cells, 8, 9, 10, 11 

 Germ plasm, 11 

 Giardia, 31, 35, 36, 56 

 Gigantorhynchus, 136 

 Gigantostraca, 225, 233 

 Gill bailer, 219 

 Gills, 73, 149, 167, 188, 206 

 Glandular epithelium, 62, 69 

 Glaridacris, 118, 126 

 Globigerina, 57 

 Glochidium, 190 

 Glomeris, 233, 234 

 Glossina, 37 

 Glossiphonia, 156, 157 

 Glottidia, 164 

 Glugea, 57 



Gnathobdellida, 155, 158 

 Golgi apparatus, 50 

 Gonads, 10, 63 

 Gonangia, 91 

 Gonionemus, 102 

 Gonium, 33, 56 

 Gonodactylus, 218, 223 

 Gonoducts, 148 

 Gonophore reduction, 92 

 Gonopophyses, 243 

 Gonotheca, 94 

 Gordiacea, 128, 133, 136 

 Gordius, 133, 136 

 Gorgonacea, 103 

 Gorgonia, 97, 103 

 Gorgonocephalus, 182 

 Gradient, axial, 109 

 Grantia, 83, 87 

 Green gland, 206, 220 

 Gregarina, 43, 44, 57 

 Group concepts, 3 

 Gunda, 110 

 Gymnodinium, 56 

 Gymnolaemata, 164 

 Gyrocotyle, 118, 126 

 Gyrodactylus, 113, 125 



