SUBJECT INDEX 



477 



Glands, pyriform of papillae, 46 



Glands, of tentacle, 79 



Glands, tubiparous, 32-38 



Glands, unicellular, see Gland cells 



Glandular girdle, see Girdle 



Glandular ribbon, 33 



Glandular shields, see Shields 



Glucosamine, 122 



Glycogen, 77 



Gonocytes, 93, 98 



Gut, 7, 79, 87, 118 



Gut rudiment, 77, 110, 113, 116, 118 



Hadal zone, 124 



Haematopoiesis, 77 



Haemoglobin, 77 



Heart, 63, 71, 73 



Heart-beat, 78 



Heart, musculature, 74 



Heart and tentacular development, 73, 74 



Histology, 6 



Historical survey, 3-6 



Integument, 32-41 

 Intertentacular cavity, 84 

 Intima, 71, 73 

 Intima of heart, 74 



Keels, see Bridle 



Keratin, 122 



Kidney of accumulation, 66 



Key to orders, families and genera, 152-153 



Key to species of Diplobrachia, 371 



Key to species of Galathealinum, 404 



Key to species of Heptabrachia, 333 



Key to the species of Lamellisabella, 422 



Key to species of Oligobrachia, 155 



Key to species of Polybrachia, 393 



Key to species of Siboglinum, 176 



Key to species of Spirobrachia, 445 



Key to tubes, 456 



Lappets, 14 

 Length, 8-10 



Lobe, cephalic, see Cephalic lobe 

 Lobes, auricular, 14 

 Locomotion, 125 

 Locomotory organs, 17 

 Lophophore, 13, 27, 29 

 Lophophore, coelom of, 60 



Mesenchyme, 76, 108 



Mesentery, 59, 63, 64, 92 



Mesocoele, 63-64 



Mesoderm, 108 



Mesosoma, 11, 13-14 



Mesosoma, coelom of, 63-64 



Mesosoma, epidermis, 32 



Mesosoma, multicellular glands, 38, 40 



Metacoele, 64-66 



Metameric section of metasoma, 17 



Metamerism, 141 



Metamerism, secondary, 17, 20-25 



Metamerism, types of, 23-24 



Metasoma, 11, 14-25 



Metasoma, ciliated epithelium, 32 



Metasoma coelom of, 64-66 



Metasoma, epidermis, 32 



Metasoma, multicellular glands, 38-40 



Metatrochophore, 23 



Methods of investigation, 145 



Morphology, external, 8-31 



Morulae, 93 



Mouth, absence of, 7 



Mouth, 79, 113, 116 



Muscle cells, 62 



Muscle cells, structure, 44 



Musculature, 42-45 



Musculature of blood vessels, 73 



Musculature of heart, 74 



Musculature of papillae, 40-49 



Musculature, longitudinal, 43 



Myocytes, 44, 62, and see Muscle cells 



Myocytes of blood vessels, 73 



Nematodal muscle cells, 44 

 Nephridia, 62, 135 

 Nephrocytes, 69 

 Nerve cells, 32, 33, 50, 58 

 Nerve fibres, 33 



Nerve fibres, giant, 54-55, 57-58 

 Nerve furrow, dorsal, 54 

 Nerve net, 50, 55 

 Nerve plate, 53 

 Nerve ring, posterior, 56 

 Nerve ring, anterior, 50, 56 

 Nerve tract, dorsal, 7, 50, 53 

 Nerves, tentacular, 79 

 Nervous system, 50-58 

 Nervous system compared with the other 

 phyla, 56-57 



