446 
INDEX. 
Helix hortensis (contd.). 
V. lilacinn, jil. i., f. 9, v. Intea 61, v. 
olivacea 91. 
Helix itala, apevtuve 34, dart, section 
367, form 25, stylopliore 370, uinbili- 
cate 29. 
Helix lapicida, alimentary tract 284, 
,ai)ertnre 33, arrangement of teetli- 
rows 262, dart 368, form 25, keel 28, 
31, lime deliciency, effect on shell 77, 
peristome 31, sexnal organs 357. 
//f/(.r«fj«om^fA’20,23,abnormalgro\vth 
121, aperture 33, aiiertural rib 35, 
banding, irregular development of 
100, band variation 97, connective 
tissue 136, disintegration of banding 
99, eaten by birds 41d, by mice .^77, 
fusion of bands 100, summer epi- 
pbragm 129, light, effect on colour- 
ing A’7, necklace of 431, periphery 31, 
peristome 32, section of shell 29, 78, 
varicose thickening 69. 
V. conica 61, v. crcticola, section 
78, V. dktphnna 77, v. lihellnla 86, 
95, pi. ii., f. 11, V. roscohtbiata pi. i. , 
f. 8, V. jdnnospira 61, m. sealavc 26, 
m. scednrifoniic 118, m. sinisirorsmn 
23, 108. 
Helix obvoluta, geojjliilous habits of 62. 
Helix pietri 85, pi. ii., f. 9. 
Helix pisann,\t\. ii., f. 10, dart, section 
367, scul|)ture 72, vision 235. 
V. fdbn 90, v. edhida 90,v. magna 
pi. i., f. 7. 
130, auditory organs 151, 
cutaneous cells of 135, dart 369, der- 
mal cells 314, dorsal cuticle 157, eye 
150, 232, winter epipbragm, 1.30, 
elements of liver 140, mandible 255, 
nacreo\is layer of sliell 21, odours 
from 2.30, (esophageal cells 274, ojitic 
bulb 233, otoconia 151, 239, 241, 
otocysts 151, pharyngeal cells 257, 
rhinophore 150, section of stomach 
walls 277, stylopliore 370, tactile 
cells 244, vision 235. 
Helix pulchell((, aperture 33, 34, dart 
368, mandible 254, palatal mandi- 
bular extension 25.3. 
Helix pggnia'o, mandible 250, odonto- 
phore 271, oilontophoral formula 271 
Helix revclata, jieriostracal hairs 75, 
arrangement of 74. 
Helix rotundfdo, sculpture 28. 
V. alba 91, m. .•siiiistrorsum 108. 
Helix rufescens, affinities 57, digitate 
glands .364, penis 362, stylopliore 
370, vestigial banding 101. 
Helix virgata, pi. ii., f. 1, dart 368, 
heart 289, leucochroism and causes 
of 93, spermatoiihore 376. 
V. alba, pi. ii. , f. 5, v. albicans 
pi. ii., f. 4, V. nigrcsccns 94, pi. ii., 
f. 2, V. rnfula 94, pi. ii.j f. 3. 
Hempstead beds 412. 
Hermaphrodite (see Monoecia). 
Hermaphrodite duct 359, of Helix 160, 
161. 
Heterodonta 4d- 
Heterogangliata 4- 
Heterogyrate 115. 
Heteromya 10, I64, 345, .347. 
Heterospathostyla 369. 
Heterostrophy 11.5. 
Hibernacula '310, Helix aspersa 311. 
Hibernation 82, 309. 
Hinge denticles 46, 47, formula of 
46, 47 . 
Hinge of biv.alves 45, 46. 
Hispid univalves 27. 
Histoluematin 307. 
History 4 , geological 403. 
Holoblastic segmentation 380. 
Holocene deposits 415. 
Holopoda 193. 
Homing 312, Limax favus ,313. 
Homogangliata 4- 
Hood 186. 
Hora'omorphism 100. 
Hyalinia, haliits 87, procryptic colour- 
ing of 87, odours from 230, otoconia 
2.39. 
Hgalima alliavia, odontophore 264, 
odontophoral formula 263, odour 
from 230, otocysts 241, vaginal 
glands 364. 
Hgalinia ce/7nrm, caudal gland 197. 
V. alba 91. 
Hgalinia f Vagrans, odour from 230. 
Hyalinia ftdva, armature of .aperture 
in young 67. 
Hyalinia helvetica, lateral grooves 205. 
Hyalinia, Incida, cannib.alistic 420, 
form of aperture .33, peristome 32. 
Hyalinia nitidula, odontophore 271, 
odontoplior<al formula 271. 
Hgalinia radiatula, sculpture 71. 
Hyperstrophy 110, 111, 112. 
Hypobranchi<al gland 198, 314, 319, in 
Viwipara vivipara and section 320. 
Hypsometrical distribution 390. 
Imperforate univalve 29. 
Incrustation of shell 332. 
Inequilateral shell 9, 36, 39. 
Inequivalve shell .39. 
Inflated bivalve 62. 
Inflected aperture 34. 
Ingestive tract 244- 
Inhibitory nerves 212, 216. 
Injuries, effects of, on shell 102, 103, 
on heart pulsation 297. 
Inner layer of shell 21, secretion of 21. 
Inner lip 32. 
Inoperculata 7. 
Integripallia 10. 
Intermediate teeth 261. 
