INDEX. 237 
Imperforated shells, 44. 
Incomplete aperture of shells, 45. 
Inequilateral shells, 11. 
Inoperculata, or typical Pulmonifera, 65 ; genera of, 66. 
Intestines of bivalves, 14. 
L. 
LAMELLI-BRANCHIATA (class), 4. 
Land snails (Helicide), characters of, 92; structure of ten- 
tacle of, 2b. ; mouth of, 93 ; reproduction of, 94 ; growth 
of shells of, 95; habits of, 96; epyphragm of, 2b. ; 
hybernation of, 97, 135; geographical distribution of, 
97 ; cleaning shells of, 98; genera of, 99 ; destructive 
to vegetation, 113; how to destroy, 114; medicinal 
properties of, 115; pomade of, 2b.; edible kinds of, 
116, 134; perforation of limestone by, 117 ; poetical 
allusions to, 2b. ; amours of, 119 ; showers of, 124; as- 
sociation of to particular soils, 97, 127, 140, 157 ; food 
for birds, 122; eaten by sheep, 124; enemies of, 114, 
124, 
Lateral teeth, 12. 
Length of shell, 11. 
Ligament of bivalves, 11. 
Limacip& (family), 66. 
Limax, generic characters of jaw of, habits of, 72. 
agrestis, 75. 
arborum, 78 ; suspension of, 1b. 
—— brunneus, 77. 
flavus, 74. 
— gagates, 81 ; jaw of, 72. 
—— maximus, 73. 
— Sowerbii, 79. 
— tenellus, 77. 
