156 THE LIFE OF THE MOLLUSCA 



Sepia (Cuttlefish), 42, 89, no, 



xxiv. 

 Sepia officinalis, xxv. 

 Sepia officinalis, Embryo, xxix. 

 Sepiola atlantica • radula, iii. 

 Septa, 63 



Septa tritonis, vi., x. 

 Scptaria, 58, 90, 103 

 Septibranchia, 35 

 Septifer, 134 



Septifer bilocularis, xxxii. 

 Septum, 21 



Septum of Cephalopod Shell, 38 

 Sexual dimorphism, 87 

 Shell, 3, 17 

 Shell, lime for, obtained from 



food, 6 

 Shell, removal of portion, 5, 21 

 Shell aperture, modes of closing, 



21-23 

 Shell Money, 142 

 Shell siphuncle, 39 

 Shell topography, 19 

 Shelly tubes of bivalves, 32 

 Ship-worm. See Teredo. 

 Sigaretus, 116 

 Sigaretus haliotideus, x. 

 Sinistral Shells, 18 

 ' ' Simtsigera, ' ' 94 

 " Sinusigera Huxley i," xxvi. 

 Siphon of Cephalopods, 36 

 Siphons of bivalves, 27 

 Siphonaria, 53, 103 

 Siphonaria Kurrachensis, xxvi. 

 Siphonariidas, 96 

 Siphonostomatous Shells, 20 

 Smaragdinella viridis, xii. 

 Smell, 9 



Snail cultivation, 139 

 Snail feasts, 139 

 Solecurtus, 135 

 Solen, 118 

 Solenidae, 108 

 Solenoconcha, 25 

 Solenogastra, 15 

 Solenomya, 119 

 Solenomya togata, xvii. 

 Spekia, 91 

 Spharium, 53, 58, 92, 118 



Spharium comeum, xviii. 



Spiral cleavage of Egg, 93 



Spiralis btdimoides, xxvi. 



Spirula, 39, 42, xxiv. 



Spirula Peronii, xxv. 



Spirulirostra, xxiv. 



Spirulirostra Bellardii, xxv. 



Spondylidae, 48 



Spondylus, 63, 98, 133 



Spondylus princeps, xvii. 



Spondylus varius, 98, xxx. 



Spongiobranchia aicstralis, 61, xxvi. 



Stenoglossa, 24 



Stenogyridae, 90 



Stenopus, 135 



Stenotheca, 44 



Stenotrema hirsuta, xiii. 



Stilifer, 81 



Stilifer astericola, xxvi. 



Stiliferinci, 81 



Stomatia phymotis, ix. 



Straparollina, 45 



Streptaxis contusns, xiii. 



Streptoneura, 23, 87 



Strombus, 22, 8o, 97, 104, 117. 124 



Strombus auris~Dian<z, viii. 



Strombus gigas, 141 



Strombus Mauritianus, 134 



Strombus pug His, x. 



Str ophites, 47 



StrophocheiluSy 90, 105 



Strophocheilus oblongus, xiii. 



Strop ho cheilus ovatus, xxx. 



Struthiolaria, viii. 



Sty lifer, 118 



Stylifer brychius, 56 



Stylommatophora 25, 60 



Subemarginnla rugosa, ix. 



Sub-Mytilacea, 58 



Subulites, 45 



Succinea 59, 79 



Succinea putris, xiii. 



Sums paid for Shells, 144 



Suture, 19 



Suture line, 39 



Swan Mussel. See Anodonta 



cygncea. 

 Sycotypus, 69, 134 

 Sycotypus pyrum, xxxii. 



