INDEX 



531 



Scissiirella, 265, 407 ; radula, 226 



SclerochitoH, ^(A? 



Scrobimdaria, 15, 164, .^JJ ; siphons, 164 



Sculptaria, 333 



Scurria, 405 



Scutalus, 356, 44'3 



Scutellastra, 4O0 



Scutus, 245, 406, 4OG 



Sci/llaca, 433 ; jaws, 212 ; stoniacli, 239 



Scymentina, 320 



Selenites, 339, 341, 44O 



Selenitidae, radula, 231 



Selenachlamys, 296 



Self-fertilisation, 42-44 



Seinele, 4oS 



Semicassis, 420 



Semper, K., ou habits of Limncea, 34 ; of 



Helicarion, 45, 67 ; on niiiuicry, 67 ; 

 - on parasitic Eulima, 79 ; on develop- 

 ment of Limnnea, 84, 94 ; on sexual 



maturity in snails, 129 ; ou Uachidium, 



187 

 S€])k(, 381, 385-387, 5.9,9 ; egg capsules, 



127 ; glands, 136; jaws, 214; radula, 



236 ; alimentary canal, 238 ; ink-sac, 



241 ; hectocotyius, 389 

 Sepiadarium, 389 

 Sejnella, 389 



Sepiola, 389 ; glands, 136 ; radula, 236 

 Sepioloidea, 389 

 Sepiophora, 388 



Sepioteuthis, 390 ; hectocotyius, 139 

 Septaria, 337, 338, 4IO 

 Septihrauchiata, 145, 167,459; branchiae, 



166 

 Septifer, 274, 440 

 Sequenzia, 4~0 

 Sergius Grata, 104 

 Serrifusus, 4~4 

 Sesa'ra, 305, 440 

 Sex, differences of, 133 

 Shell, 244 f. ; internal, 174 ; shape of 



bivalve, 445 

 Shell-gland, primitive, 132 

 Shells as money, 96 f. ; as ornament, etc., 



98 f. ; various uses of, 98 f. ; prices given 



for rare, 121 ; sinistral, 249 

 Shores of N. Asia, no littoral fauna, 2 

 Showers of shells, 47 

 Si(iaretus, 186, 245, 267, 4II ; foot, 198 

 Sight, 180 



Silenia, 459 ; branchiae, 168 

 Silia, 425 

 Siliqim, 274, 40^ 

 Siliquaria, 248, 413 

 Simnia, 419 



Simpulopsis, 345, 350, 442 

 Simpuhim, 420 

 Simrotli, on recent forms of Helix, 22 ; 



on food of slugs, 31 ; on crawling of 



llelix, 45 

 Singular habitat, 48 



Sinistral shells, 249 



Siiii.-itiv.lia, 424 



Siausigera, 133 



Sipho, 424 



Siphoned ia, 424 



Siphonaria, 18, 431 ; classification, 19 ; 



breathing organs, 151, 152 

 Siphonarioidea, 431 

 Siphonodentalium, 444 

 Siphonostoniata, 156 

 Siphonotreta, 493, 496, 504 ; stratigiaphi- 



cal distribution, 507, 508 

 SiiDhons, 173 ; in burrowing genera, 165 ; 



branchial, 155 

 Sistrum, 75, 423; radula of S. spectrum, 



79 222 

 Sitaia, 301, 304, 310, 314-319, 333, 44O 

 Skargard, MoUusca of the, 13 

 Skeneei, 4I0 

 Skenidium, 505, 508 

 Slit, in Gasteropoda, 265, 406 

 Slugs, habits and food of, 30 f. ; bite 



hand of captor, 33 ; in bee-hives, 36 ; 



in greenhouses, 36 ; protective colora- 

 tion, 70 ; eaten in England, 120 

 Smeiragdia, 21 

 Smeiragdinella, 430 

 Smell, sense of, 192 

 Smith, W. Anderson, quoted, 98, 111, 



114, 191 

 Snails as barometers, 50 ; plants fertilised 



by, 102 ; cultivation for food, 118 C. ; 



used for cream, 119 ; as medicine, 120 ; 



banned by the Church, 121 

 Solariellei, 4O8 ; radula, 225 

 Solarium, 264, 412, 413 ; radula, 224 

 Solanp.sis, 343, 353-357, 442 

 Sok'eurtu.s, 165, 4-57 



Solen, 171, 446, 4.57 ; vision, 190 ; habits, 45 

 Solenuia, 452 

 Solenomyei, 275, 448 

 Solenotellina., 450 

 Solomon islanders, use of shells, 98 

 Somatogyrus, 415 

 Sophina, 305 



Spallanzani, experiments ou llelix, 163 

 Spat, fall of, 113 

 Speitlm, 294, 331, 336, 452 

 Spekiet, 333 

 Sperniatophore, in Cephalojjoda, 137 ; in 



Helix, 142 

 Spermatozoa, forms of, 136 

 Sphaerium, 453 

 Sphenia, 456 

 Sphenodiscus, 398 

 Sphyradium, 442 

 Spines, use of, 64 

 Spiraculuin , 266, 414 

 Spiraxis, 442 

 Spirialis, 249 

 Spirifera, 468, 501, 505 ; stratigrajihical 



distribution, 507, 508, 511, 512 



