INDEX 



765 



F 



ABSJCIA, 438 



Facial suture, 558" 



Falciform young of Monocystis, 76 



Family, 4* 



Fat, 23 



Fat body, of Periplaneta, 576 



Fauna, 8 



Feather-star See A ntedon ro-sacta 



Femur, of Cockroach, 574 



Fenestra?, of Perip/niiefa, 572 



Fenja, 188, 189, Addenda 



Ferment, 12 



Fibres, nerve, 27, 28 



Fibre-cartilage, 24 *, 25 



Filibranchiata, 646*, 648, 649, 602 



Fimbris.', of Fresh-water Mussels, 632 



Fire-flies, 596 



Fission, 14, 38*, 44, 73 



Fissurella, 694 



Fixed cheek, 558* 



Flabdlum, 183, 192, 193, 489 



Flagellata, 65* : Cell-body, 65 : Flagella, 

 66, 67 : Bilateral symmetry, 67 : Modes 

 of nutrition, 67 : Skeleton, 68 : Colo- 

 nies, 68 : Asexual multiplication, 69 : 

 Sexual reproduction, 70 



Flagellate canals, of Sponges, 98, 99, 100*, 

 109 



Flagellate cells, 98, 99, 1UO* 



Flagellula, 51, 62, 64 



Flagellum, 21* 



Flaetellum, of Astaf.us, 502 



Flame-cells, 224*, 253 



Flat-worms See Platyhelniintb.es 



Fleas, 585, 586, 591, (502 



Flosc-ularin, 303, 305, 3u6 



Flustra, 320 



Follicit/ijia. 85 



Food vacuole of Paramcecium, 81 



Foot, of Anoi.lonfK, 632 : Pelecypoda, 

 652 :-Amphineura, 664, 665: Triton, 

 674, 675 : Sepia, 709, 710 : Nautihis, 

 727 : Cephalopoda, 738 



Foot- gland, 327 



Foraminifera, 46* : General structure, 50, 

 51 Skeleton, 51, 52. 53 : Protoplasm, 



54 Dimorphism, 55 : Reproduction, 



55 Distribution, 55 

 Fossettes, 541 

 /'ux.tit/tt, 197 



Fresh-water Crayfish, 498 

 Fresh-water Mussel See Anodonta, 

 Fresh-water Sponges, 116 

 Fresh-water Worms, 403 

 Frondic ill aria, 53 



Fulcrum (of Rotifera), 307 

 Fiuti/ia, 192 

 Fun'iculus, 316, 323 

 Funnel, 748 

 Funnel folds, 746 



(I, 



G 



IALEA, 573 



<ilKodes, 612, 614 



Galls, 599 



Gall-flies, 581 



Gall-insects, 598 



Gametes of Flagellata, 70 



<_!aiinn<irun, 524, 543, 544 



( 1. 1 niobium, 130 



Gastral cortex, 102*, 110 



Gastric filaments, of Aurelia, 160 



Gastric mill, 547 



Gastric mill, of Astacus, 507 



Gastric ostium, 10 V' 



Gastric ridges, of Aurelia, 161 



Gastrolith, 507 



(t'lixtrof/hilua t-qni, 586 



Gastropoda, Example, 671 : Distinctive 

 characters and classification, 682 : 

 Systematic position of example, 685 : 

 General organisation, 685 : External 

 features, symmetry, &c., 685: Shell, 

 list; : Foot, 687: Head, 689: Mantle, 

 689 : Respiratory organs, 690 : Diges- 

 tive organs, 692 : Heart, 693 : Nervous 

 system, 693 : Organs of special sense, 

 69.3 : Nephridia, 697 : Reproduction, 

 697 : Development, 698 ; Ethology and 

 distribution, 704 : Relationships, 705 : 

 Appendix, 7' >"> 



Gastropores, of Millepora, 145 



Gastrotricha, 311, 312 



Gastrula, 21, 39 



Gastrulation, 20* 



<< /iiximtis, 541, 556 



Gemmules, 112 



Geme, 572* 



Generic, 1 



< Iciiital operculum, 606 



( ienital system SeeReproductive system 



Geological distribution See Distribu- 

 tion, geological 



Gephyrea, 450 : Example, 451 : Dis- 

 tinctive characters and classification, 



454 : Systematic position of the ex- 

 amples, 455 : General organisation, 455 : 

 Body-wall, 456 : Ccelome, 456 : Ali- 

 mentary canal, 457 : Vascular system, 

 457 : Nervous system, 457 : Nephridia, 



455 : Reproductive organs, 458 : Sexual 

 dimorphism, 458 : Development, 459 : 

 Distribution, affinities, &c., 461 



Germinal bands, oiClepsiiK, 479 : of Pt.ri- 



patus, 564 



Germinal groove, 581 

 (Terminal layers, 21* 

 Germinal spot, 18*, 28 

 Germinal vesicle, 18*, 28 

 ( Jiant clam, lilio 

 Giant fibres, 438 

 Giant nerve-cells, 438 



