150 
Gibbula cinevea: radula, iii. 
Gibbus, 98 
Gibbus Lyonetanus, xxxii. 
Gills, 7, 28, 29, 128-131, iv. 
Girdle of Chitons, 15 
Gizzard, 69, 124 
Glaucomya, 58 
Glaucus Atlanticus, xii. 
Glochidium, 82 
Glycimeris latitans, xvi. 
Glycimeris pectiniformis, xvii. 
Glyptosoma, 21 
Gonatus, 127 
Grey Slug. See Limax maximus. 
Growth, 5 . 
Gryphea arcuata, 98, xxx. 
Guard of Belemnite, 40 
Habits of Mollusca, 67 
Haliotide, 24, 53 
Haliotis (Ormer), 11, 20, 24, 53, 
95, 142 
Haliotis tuberculata, vii. 
Hamites, 38 
Hamites attenuatus, xxii. 
Harpa, 63, 116, 125, 135 
Harpa ventricosa, xi, 
Hearing, 9 
Heart, 6, 127 
Hectocotylization, 88 
Helcion, 57 
Helicarion, 136 
Helicarion tigvinus, 124 
Helicella conspurcata, 78 
Helicella itala, 77 
Helicella virgata, 114 
Helicigona lapicida, xiii. 
Helicinide, 60 
Helicocevas votundum, xxii, 
Helicostyla, 120 
Helix, 12, 48 
Helix aspersa (Common Garden 
Snail), 12, 75, 90, 126, 137, 
XXxi, 
Helix desertorum, 61, 75, 120, xiii. 
Helix hortensis, feeding tracks, 
xxvii, 
Helix lactea, 71 
Helix nemovalis, 77, 139 
THE LIFE OF THE MOLLUSCA 
Helix nemoralis : mandible, iii. 
Helix Pisana, 113 
Helix pomatia (Roman Snail), 73, 
137. 139 
Helix pomatia : radula, iii. 
Helix tristis, 60 
Helix Veatchii, 75 
Helminthochiton, 46 
Hermaphroditism, 87 
Hermaa bifida, 121, xii. 
Hermea dendritica, 121 
Heteromyarian, 34 
Heteropoda, 56, 105, 117 
Heterostrophy, 19 
Hinge line, 32 
Hinge plate, 32 
Hinge teeth of bivalves, 31 
Hinnttes sinnosus, xvii. 
Hipponycidee, 103 
Hipponyx, 68 
Hippopus, 106 
Hippopus maculatus, xix. 
Hippuritide, 49 
Holopea, 45 
Holostomatous shells, 20 
Homing instinct, 137 
Hyalea, 61 
Hyalimax, 106 
Hybernaculum, 73 
Hybernation, 72 
Hydrocenidz, 60 
Hyperstrophy, 18, iv. 
Hypostracum, 4 
Hypselostoma, 98 
Ianthina (Purple Sea Snail), 56, 
69, 80, 89, 116, 126, 129, 132, 
143 
Ianthina fragilis, x., xxx, 
Imperator olivaceus, viii. 
Incubatory Mollusca, 91 
Inequilateral, 31 
Inequivalve, 31 
Ink-sac, 36 
Inoceramus, 141 
Iphigenia, 57 
Tsocardia, 107 
Isocavdia humana, xviii., xxx. 
Isomyarian, 34 
