TABLE OF CONTENTS. 
Famity ZONITIDA Mérch, pp. 1 and 449. 
GENUS VITRINA Drap., pp. 2, 3, and 449. 
Vitvina hibernica Taylor, pp. 449 —454 ; V. pellucida Miller, pp. 4—14, and 455. 
GrNuS HYALINIA Charp., pp. 15—17, and 455, 456. 
Hyalinia alliaria, pp. 57—66, and 465, 466; H. cantabrica, p. 150; H. cellaria, 
pp. 80-44, and 457, 462; H. erystallina, pp. 108--117, and 469—470; H. dawsoni 
p. 153; H. @urbani, pp. 151, 152; H. fulva, pp. 118—132, and 470, 471 ; H. helvetica, 
pp. 45—56, and 463—465 ; H. leat, p. 153; H. lucida, pp. 18—29, and 456, 457 ; 
MH. morrisii, p. 152; H. nitidula, pp. 67—80, and 466, 467; H. pura, pp. 80—86, 
aud 467, 468; H. radiatula, pp. 87—107, and 468, 469; H. sconciensis, p. 153. 
GENUS ZONITOIDES Lehmann, pp. 133 and 471. 
Zonitoides excavatus, pp. 133—140, and 471, 472; Z. minusculus, p. 150; Z. nitidus, 
pp. 141—150, and 472, 473. 
GENUS GASTRODONTA Albers, p. 154. 
Gustrodonta headonensis, p. 154. 
Famiry ENDODON'TID Pilsbry, pp. 155 and 473. 
SuB-FAMILY POLYPLACOGNATHA Pilsbry, pp. 155 and 473. 
Grnus PUNCTUM Morse, pp. 156 and 473. 
Punctum pyguweum, pp. 157—168, and 473, 474. 
Sus-FAMILyY HAPLOGONA Pilsbry, pp. 169 and 474. 
GENUS PYRAMIDULA Fitz., pp. 169 and 474. 
Pyranidula omphala, p. 194;  P. rotundata, pp. 180—193, and 475, 476 ; 
P. ruderata, pp. 196 —198, and 476; P. rupestris, pp. 170—179, and 474; P. rysa, 
p- 195; LP. suttonensis, p. 195. 
Famity HELICIDA Linné, pp. 199—200, and 476. 
Sub-FAmMity EPIPHALLOGONA Pilsbry, p. 200. 
Thelidomus occlusus, p. 201; Planospira vectiensis, p. 202. 
Sub-FAMILY BELOGONA Pilsbry, pp. 208 and 476. 
Group BELOGONA EUADENIA Pilsb., p. 208. 
Plectotropis tropifera, p. 203. Helicostyla pseudoglobosa, pp. 204, 205. 
Eulota fruticum, pp. 205—207. 
Grour BELOGONA SIPHONADENIA Pilsbry, pp. 208 and 476. 
GreNUS HELIX Linne, pp. 209, 210, and 476. 
Helix aspersa, pp. 236—273, and 482, 483; H. hortensis, pp. 326—367, and 486, 
487; H. nemoralis, pp. 274—325, and 483, 485; H. pisana, pp. 368— 397, and 487, 
488; H. pomatia, pp. 211—235, and 476—481. 
GENUS HELICIGONA Feérussac, pp. 398 and 489. 
Helicigona arbustorum, pp. 417—446, and 490, 491; H. dapicida, pp. 399—416, 
and 489—490. 
APPENDIX, pp. 449—522. 
LITERATURE, pp. 492, 493. 
LIST OF SUBSCRIBERS, pp. 494—498. 
INDEX, pp. 499—522. 
