Scalaria monocycla auct. TI, 245 
= -- Lamarck I, 246 
— planicosta Bivona I, 243 
= plicata Scacchi I, 243 
= pretiosa Lamarck 10240 
I, 245 
— pseudoscalaris auct. 
«ae _ Brocchi [, 246 
pulchella Bivona II, 796 
— Scacchii Hœærnes II, 796 
_ subdecussata Cantr. Il, 796 
— tenuicosta Michaud I, 242,243 
— _ — , oil 
— Turtonæ Turton I, 243 
Sealaridæ Brown I, 223 
Sealarus Montfort 1, 240 
Sealatarius Duméril I, 240 
Scalide de Boury I, 223 
pee Montfort I, 535 
Browni Leach 1, 537,538 
= Fortisii Grateloup I, 539 
—- gibbulus Roux IT, 800 
— giganteus Risso 1, 536,538 
— Grateloupi Michaud I, 539 
— lignarius Linné 1,525,536 
— — Risso I, 538 
— sublignarins d'Orb. I, 539 
—— targionius Risso I, 536 
Scaphopoda Brown 1, 557 
Schismope Jeffreys I, 429 
— striatula Philippi 1, 430 
on — — LES 
Selhizodesma Gray Ji nl 
Scehizotrochus Monterosato I, 430 
— crispata Fleming 1, 430 
Schwartzia Bucquoy, Dantzen- 
berg et Dollfus 1, 278 
Scissurella d'Orbigny 1,429,149 
— affinis Costa 1, 430 
— cancellata Jeffreys 1. 430 
= costata d'Orbigny 1,429,430 
— crispata Fleming 11, 798 
— decipiens Costa 1, 450 
— lævigata d'Orbigny 1, 430 
_ —- HUE BS 
— Orbignyi Scacchi I, 430 
— plicata Philippi 1, 430, 431 
Seissurellina Gray I, 430 
Scobina Bayle IT, 609 
1, 68 
” Sconsia Gray 
Scrobicularia Schumacher 11, 693 
— alba W. Wood 11, 705 
— arenaria Schum. IT, 694 
— compressa Pult. 11, 697, 699 
— Cottardi Payr. II, 699,805 
— fabula Brusina II, 709 
— ovata Philippi II, 710 
— piperata Poiret 11, 695, 696 
697, 698, 699 
— plana Da Costa II, 594 
Scrobicularia prismatica Lask. II, 713, 714 
Scrobiculariidæ Chenu II, 693 
Seutellastra Adams I, 469 
Seutulum Monterosato I, 481 
— Tournouër T, 481 
-- Gussonii Costa I, 482 
Seutum Montfort I, 449 
Semele Schumacher IT, 693 
— alba W. Wood Il, 705 
—  angulosa Renier II, 714 
—  piperata Poiret II, 697 
Semicassis Klein I, 64 
Semimodiola Cossmann II, 163 
Serpula arenaria Linné 
—  contortuplicata Linné 1, 239 
—- _ Payraud. I, 234 
—  dentifera Lamarck I, 236 
—  fascicularis Lamarck I, 239 
glomerata Linné I, 234,239 
Srnalides Gray I, 235 
Serpulorbis Sassi I, 235 
_ gigas Bivona I, 236 
— polyphragma Sassi I, 236 
Serpulus Linné I, 234 
Serpulus Montfort 1, 235 
-— arenarius Linné 1236 
Serrula Chemnitz Il, 453 
—— adriatica Monterosato IL, 457, 458 
—  Jlævigata Chemnitz II, 454 
—  trunculus Linné IT, 457,458 
Srtia H. et A. Adams I, 306 
—  amabilis Monterosato ], 308, 309 
—  fulgida Adams I, 309 
— pulcherrima Jeffreys 1, 307,308 
309 
Sigaret Adanson 1, 153 
— h\ Cuvier DAL53 
Sigarctus Lamarck 1, 155 
—— Kindelmannianus Mich.I, 155 
—  Marellii Delle Chiaje 1, 153 
-—  neritoideus Delle Chiaje 1, 154 
—  perspicuus Philippi 1, 153 
Siger Adanson , 64 
Siliquaria anguina Linné Il, 796 
Simniaæ Hermannsen I, 134 
Simnia Leach 1, 134 
— — 11, 767 
—  nicæensis Risso 1, 134, 135 
—  purpurea Risso II, 794 
Simputum Klein 1, 31 
Siphonariidæ d'Orbigny 1,481,483 
Siphonodentalium quinquangu- 
lare Forbes IT, S01 
Siphonostomata Blainville ÉMIGAIO0T 
Skeneia Fleming 1,322,419 
—  costata Danilo et Sand, I, 326 
—  depressa Montagu 1,-322 
—  Fischeriana Monter. 1, -326 
—  Jævis Philippi M 108 
