INDEX. 
447 
Internal, ligament 48. o’-ganization 
136, organization of Helix cispersn 
146, 147, rib 35, 70, shell 20, surface 
of bivalves Jfi. 
Interrupted peristome 31, 32. 
Intestinal ganglia (seeVisceral ganglia). 
Intestine, 2Ifi, 282, in Helix aspersa 
154, cells of 281, torsion 281, 282. 
Intrin.sic, buccal muscles. Helix 150, 
259, pedal in Anodonta 183. 
Inversion 111, 112. 
Involuntary muscles 341. 
Involute aperture 34. 
Isomya 10, 164, 345, 347. 
Isopleura 5. 
Jaw (see Mandible). 
Jurassic strata 407- 
Keber’s, organ 179,557, valvule77i?,295. 
Kidney (see Nephridium). 
Kiokkenmoddings 4~4- 
Kleeburg’s sinus 196, 314. 
Kolliker’s canal 239. 
Labiate univalves 34, 35, 65, 66, causes 
of labiation 66. 
Labial lobes, in iZefc 759, 190, arrange- 
ment of 191, in Anodonta 171, 190, 
blood system of 191, structure of 191. 
Labial palps (see Labial lobes). 
Labium 32. 
Labrum 32. 
Lacaze’s organ (see Ospliradium). 
Lacunm 293. 
Lacunar tissue 139. 
Lacunose sculpture 28. 
Lamellm of aperture in Clausilia 67, 68. 
Lamellate aperture 35. 
Lamellibranchiata 9. 
Lateral teeth 152, 261. 
Lateral grooves in Helix 1 44, 205. 
Leiognatha 254, 255. 
Leucochroism 95, pi. ii., f. 4. 
Lenticular univalves 25. 
Levator muscles 258, 559, Anodonta 183. 
Leydig’s cells 34O. 
Liassic strata and fossils 407. 
Ligament 48. 
Light, influence on colour 87. 
Liguus virgineus, 85, pi. ii., f. 8. 
Limax, diagram showing body caruty 
204, nervous system 215, semper’s 
organ 190. 
Limax campestris, teeth development 
258. 
Limax cinereo-niger, otoconia 239, 
trifasciate foot-sole 194, semper’s 
organ 243. 
Limax flavm, alimentary tract 284, 
I colour changes during growth 327, 
homing 313, lung 304, mucous track 
313, jaw 255. 
Limax maximus, alimentary tract and 
its supports 285, cephalic retractors 
344, jaw, immature 253, olfaction 
229, shell 20, supra-pedal gland, 
section of 315, pairing 373. 
V. fenissaci pi. i., f. 5. 
Lime cells (see Calcic cells). 
Lime, effects of deficiency 77, 85, of a 
plethora 78. 
Limnceidce, abyssal variation of 77, 
labial lobes 100, ventral gland 315. 
Limncea auricularia, form 25, disto- 
mate 119, injuries to 102, malformed 
105, mucous filament 318, mucous 
track 316. 
V. alba 32, v. gibbosa 25, 34, 64. 
Limncea glabra 30, varicosity 69. 
Limncea glutinosa, pallial outgrowth 
202, periodicity 391. 
Limncea peregra 107, alimentary canal 
274, cephalic retractors .343, environ- 
ment effects 62, jaws 252, malleate 
71, malformed by T/yr/m 107, nerve 
ring 114, nervous system 214, ospli- 
radium 228, ovotestis 358, pairing 
373, plasticity of form 62, prostatic 
section 360, polyperistomate 120, 
respiratory siphon 199, rotating 
embryo 382, speed 349. 
V. burnetti 62, v. cliapliana 76, 
v. glacicdis 76, v. involnta pi. i., fig. 4, 
v. labiosa 34, 66, v. marginata 69, 
v.ovccta 9, y.pictcc 102, v. thermcdis 76 
Limncea pcdustris 30, marginal rib 69, 
penis of 362. 
V. lacnnosa 28, 71, v. zebra 101, 
m. decollatum 30. 
Limncea stagncdis, alimentary canal 
279, chaperon 186, chemical structure 
of shell 20, egg, showing expulsion of 
polar bodies 378, eye 231, expanded 
lip 66, form 32, gibbously inflated 
65, growth 81, 82, lip 66, marginal 
rib 69, meteorological influence, 
effects of 83, mucous tracks 315, 
nervous system 6, osphradial cells 
210, 225, saline influence, effects of 
105, sexual organs .355, sliell gland 
322, tentacles 189, variation, causes 
of 83, varicosity 69. 
— — V. appressa, pi. i. , f. 6, v. bocla- 
mica 24, 62, 65, v. fragilis 186, 199, 
V. fragilis-variegata 83, v. varie- 
gata, 28, 69, m. smlariforme 26. 
Limncea trnncatida 24, parasite of 422. 
V. turrita 24. 
Lingual ribbon (see Odontophore). 
Lip, columellar 32, inner 32, outer 32. 
Lipocephala 36. 
Lipochromoids 88. 
Lirate sculpture 28. 
Literature, of classification 13, nomen- 
clature 18, shell 131, animal 383, 
geological, etc. 435. 
